CN114079333B - Motor, compressor and electrical equipment - Google Patents
Motor, compressor and electrical equipment Download PDFInfo
- Publication number
- CN114079333B CN114079333B CN202111494417.4A CN202111494417A CN114079333B CN 114079333 B CN114079333 B CN 114079333B CN 202111494417 A CN202111494417 A CN 202111494417A CN 114079333 B CN114079333 B CN 114079333B
- Authority
- CN
- China
- Prior art keywords
- stator
- motor
- rotor
- tooth
- segmented
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004080 punching Methods 0.000 claims abstract description 63
- 238000004804 winding Methods 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 238000003475 lamination Methods 0.000 claims description 51
- 230000004907 flux Effects 0.000 claims description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000013461 design Methods 0.000 description 22
- 238000012545 processing Methods 0.000 description 11
- 238000006073 displacement reaction Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000000149 penetrating effect Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/0094—Structural association with other electrical or electronic devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/521—Fastening salient pole windings or connections thereto applicable to stators only
- H02K3/522—Fastening salient pole windings or connections thereto applicable to stators only for generally annular cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Compressor (AREA)
Abstract
The invention provides a motor, a compressor and electrical equipment, wherein the motor comprises: the stator assembly comprises a stator and a winding wound on the stator; the stator includes: the stator punching sheets comprise a plurality of split punching sheets which can be connected in a split manner; any one of the segmented punched pieces comprises: the yoke part is arranged on the tooth part, and a groove body is arranged on one side, away from the tooth part, of the yoke part; the rotor is arranged in the stator, the pole pair number of the rotor is P, and the maximum running rotating speed of the rotor is N; the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequency of the frequency conversion assembly is fc, the frequency conversion assembly meets the requirement that fc/(P multiplied by N) is less than or equal to 15.6, and the unit of fc is Hz. For the motor with lower pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency can meet the requirement of the frequency converter without being excessively high, the lower carrier frequency can obviously reduce the loss of the frequency converter, and the energy efficiency of the compressor is improved.
Description
Technical Field
The invention belongs to the technical field of motors, and particularly relates to a motor, a compressor and electrical equipment.
Background
With the development of rotary direct current variable frequency compressors, higher requirements are put on the energy efficiency of the compressors, and the energy efficiency of the compressors is improved mainly by improving the motor efficiency and reducing friction loss.
However, technical difficulties in improving motor efficiency and reducing friction loss are great, and thus how to improve energy efficiency of a compressor is a problem to be solved.
Disclosure of Invention
The present invention aims to solve one of the technical problems existing in the prior art or related technologies.
In a first aspect, the present invention proposes an electric machine comprising: the stator assembly comprises a stator and a winding wound on the stator; the stator includes: the stator punching sheets comprise a plurality of split punching sheets which can be connected in a split manner; any one of the plurality of segmented chips comprises: a tooth portion; the yoke part is arranged at one side of the tooth part, which is away from the axis of the stator punching sheet, and a groove body is arranged at one side of the yoke part, which is away from the tooth part; the rotor is arranged in the stator, the pole pair number of the rotor is P, the maximum running rotating speed of the rotor is N, and the unit is Hz; and the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequencies of the frequency conversion assembly are fc, P, N and fc are met, fc/(P multiplied by N) is less than or equal to 9 and less than or equal to 15.6, and the unit of fc is Hz.
The motor provided by the invention is characterized in that a stator groove is formed in a stator, a rotor is arranged in the stator groove, specifically, the stator and the rotor are arranged through shafts, and the rotor can rotate relative to the stator. Further, the stator is also provided with windings, in particular, the windings are arranged on the stator teeth. The stator comprises stator punching sheets which are arranged in a laminated mode, a plurality of tooth parts are arranged on the stator punching sheets, and the tooth parts of the stator punching sheets are arranged in a laminated mode to form a plurality of stator teeth. The stator teeth are arranged on the inner side of the stator and face the rotor. The coil is wound on the stator teeth to form a winding, the winding is used for generating magnetic induction wires in an electrified state, the rotor rotates relative to the stator, namely, the rotor rotates relative to the winding, the rotor rotating relative to the winding cuts the magnetic induction wires, and a force for driving the rotor to rotate is generated, so that the operation of the motor is realized.
In order to reduce the processing difficulty of the stator and improve the slot filling rate of the motor, the stator is arranged to be of a split type structure. The stator includes a plurality of segmented laminations. Through setting up the piecemeal towards the piece to a plurality ofly to when processing the stator, only process a plurality of piecemeal towards the piece can, assemble into the stator with a plurality of piecemeal towards the piece part again, compare in processing a complete stator, the degree of difficulty of processing the piecemeal towards the piece part reduces, thereby has reduced manufacturing cost, and this kind of stator simple structure, the automated production to the stator is realized to the accessible automated production line.
And, design the split type mosaic structure with the stator, be convenient for realize the winding of coil and establish, can be around establishing the back of accomplishing to installing two adjacent piecemeal punching again in the coil, reduce the degree of difficulty of establishing the coil, consequently can the stator size the same circumstances, around establishing more coils, improve the winding of coil and establish the number of turns, be favorable to improving the groove filling rate of motor. On the basis of not increasing the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
The larger the carrier frequency of the variable frequency component is, the closer the waveform of the current output is to the sine waveform, the higher the energy efficiency of the compressor is, and the output torque of the motor is increased. The larger the number of pole pairs of the rotor, the larger the output torque of the motor, and although the output torque of the motor can be increased by increasing the carrier frequency of the frequency conversion assembly and the pole pairs of the rotor, as the carrier frequency of the frequency conversion assembly is increased, the loss of a switching device in the motor is increased, the whole machine heating value is larger, and the motor efficiency is reduced, so that the excessive increase of the carrier frequency of the frequency conversion assembly can reduce the efficiency of the motor. And, as the number of pole pairs of the rotor increases, the size of the motor increases, which is contrary to the demand for miniaturization of the motor, and the more the number of pole pairs of the rotor, the lower the rotation speed of the rotor, resulting in a reduction in the operating efficiency of the compressor in which the motor is mounted.
Therefore, when increasing the output torque of the motor, it is necessary to correlate the carrier frequency, the pole pair number of the rotor and the maximum operation rotational speed of the rotor, and to reduce the size of the motor as much as possible while the output torque can be increased, and to ensure the operation efficiency of the compressor, so that it is necessary to balance the number of pole pair numbers of the rotor and the maximum rotational speed of the rotor, and on this basis, it is necessary to consider that the heat generation amount of the motor is prevented from being excessively large while the output torque is increased as much as possible. For the motor with lower pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency can meet the requirement of the frequency converter without being excessively high, the lower carrier frequency can obviously reduce the loss of the frequency converter, and the energy efficiency of the compressor is improved.
The three parameters are related, the ratio of the carrier frequency, the pole pair number of the rotor and the maximum rotating speed of the rotor is limited to be between 9 and 15.6, the output torque of the motor can be increased on the basis of ensuring the motor efficiency and the compressor efficiency and reducing the motor size, and the working requirements of the motor under different use scenes can be met.
In addition, the stator in the technical scheme provided by the invention can also have the following additional technical characteristics:
in one possible design, the carrier frequency is met at fc, 3000. Ltoreq.fc.ltoreq.5000.
In this design, when the carrier frequency is greater than 5000Hz, the value of the carrier frequency is large at this time, the loss of the switching device increases, the motor heating amount is large, and the motor efficiency is reduced. When the carrier frequency is smaller than 5000Hz, the value of the carrier frequency is smaller, the running stability of the motor is poorer, and the motor oscillates to cause larger running noise. According to the invention, the value of the carrier frequency is limited between 3000 and 5000, so that on the basis of ensuring the motor efficiency, the noise generated when the motor operates can be reduced, and the use experience of a user on the motor can be improved.
In one possible design, p and N are satisfied, 60 < N/p.ltoreq.100.
In this design, the pole pair number of the rotor is related to the torque of the motor, but simply limiting the number range of pole pair numbers to adjust the torque tends to make it difficult for the displacement of the compressor in which the motor is installed to meet the required operating criteria. The larger the rotation speed of the rotor is, the larger the displacement of the compressor is, the larger the pole pair number is, and the lower the maximum rotation speed of the rotor is, therefore, the maximum rotation speed of the rotor is related to the pole pair number of the rotor, the ratio of the maximum rotation speed of the rotor to the pole pair number of the rotor is limited between 60 and 100, the torque can be reduced under the condition of the same displacement, the operating point of the motor is changed, and the efficiency of the motor is improved.
In one possible design, any one of the plurality of segmented chips further comprises: the first connecting part is arranged at one edge of the segmented punching sheet extending along the radial direction of the segmented punching sheet; the second connecting parts are arranged at the other edge of the segmented punching sheet extending along the radial direction of the segmented punching sheet, and the first connecting part of one segmented punching sheet can be matched with the second connecting part of the adjacent segmented punching sheet.
In this design, a first connection and a second connection are provided on the segmented blank. Specifically, the first connecting portion is disposed at one edge extending along the radial direction of the stator lamination, and the second connecting portion is disposed at the other edge extending along the radial direction of the stator lamination, that is, the first connecting portion and the second connecting portion are disposed at two sides of the segmented lamination along the circumferential direction of the stator lamination. The first connecting part of one segmented punching sheet is matched with the second connecting part of the adjacent other segmented punching sheet, so that the connection of the two segmented punching sheets is realized. The plurality of block punching sheets are arranged along the circumferential direction of the stator, and any two adjacent block punching sheets are matched through the first connecting part and the second connecting part, so that the connection among the plurality of block punching sheets is realized, and the stator is formed by surrounding.
The first connecting part and the second connecting part are arranged on the block punching sheet, so that the connection stability of the adjacent block punching sheets can be improved, and the shaking of the adjacent two block punching sheets is avoided.
In one possible design, the first connection part is configured as a projection and the second connection part is configured as a recess adapted to the projection.
In this design, the first connecting portion is configured as a protruding member, and the second connecting portion is configured as a groove, that is, a structure with concave-convex fit between the first connecting portion and the second connecting portion, and the groove is adapted to the protrusion, so as to realize connection fit between the first connecting portion and the second connecting portion.
Through setting up first connecting portion into protruding piece, set up the second connecting portion into with protruding piece matched with recess, made between first connecting portion and the second connecting portion form unsmooth complex structure, promoted the connection reliability, reduced the processing degree of difficulty.
In one possible design, the segmented stamping includes: the avoidance notch is arranged on the surface of the tooth part, which is used for facing the rotor, and the distance between the avoidance notch and the first tooth shoe of the tooth part is smaller than the distance between the avoidance notch and the second tooth shoe of the tooth part; wherein, along the rotation direction of rotor, the rotor passes through first tooth boots and second tooth boots in proper order.
In this design, the stator still includes dodging the breach, dodges the breach setting in the tooth and be used for towards the surface of rotor. The tooth portion includes a first tooth shoe and a second tooth shoe, and the rotor passes through the first tooth shoe and the second tooth shoe in order along the rotation direction of the rotor. The distance between the avoidance gap and the first tooth shoe is smaller than the distance between the avoidance gap and the second tooth shoe, namely, the avoidance gap is close to one side of the first tooth shoe.
Through set up on the tooth towards the surface of rotor and dodge the breach to can dodge the protruding piece on the rotor through dodging the breach at stator and the in-process of rotor assembly, avoid the assembly interference.
The space phase of the stator-rotor air gap flux guide can be effectively adjusted by arranging the avoidance gap on the stator, so that the phase of the first-order flux guide tooth harmonic wave of the magnetic field is changed to be mutually offset with the armature magnetic potential harmonic wave, the radial electromagnetic force of the motor is obviously reduced, and the noise of the motor during operation is reduced.
In one possible design, the stator further comprises: an aluminum coil is wound around the teeth.
In this design, the coil wound around the tooth is defined as a material of aluminum, that is, the coil is formed by winding aluminum wire around the tooth, and the unit price of aluminum wire is low.
In one possible design, the number of teeth of the stator is Z, and Z and N are satisfied, 20 < N/Z.ltoreq.34.
In this design, the maximum motor rotation speed affects the torque of the motor, but simply limiting the maximum motor rotation speed and leaving the limit of the number of teeth of the stator tends to change the harmonic magnetic field of the motor to affect the efficiency of the motor. Therefore, the number of teeth of the stator and the maximum rotation speed of the rotor are combined, the torque can be reduced under the condition of the same displacement, the operating point of the motor is changed, and the efficiency of the motor is improved.
In one possible design, the motor further comprises: the plurality of magnetic flux guide grooves penetrate through the rotor along the axial direction of the motor.
In this design, the rotor is also provided with a plurality of flux guide slots. Specifically, the rotor is formed by stacking a plurality of rotor punching sheets, a plurality of magnetic flux guide grooves are formed in any rotor punching sheet, and the magnetic flux guide grooves are distributed on the rotor punching sheet in a penetrating manner along the axial direction of the motor, namely in the rotor punching sheet in the penetrating manner along the axial direction of the motor. It will be appreciated that during operation of the motor, radial electromagnetic waves may be generated which may lead to increased noise. In order to improve the noise problem of the motor, a plurality of magnetic flux guide grooves are arranged on the rotor in a penetrating way along the axial direction of the motor, so that radial electromagnetic waves of the lowest order of the motor can be reduced, and the noise caused by the radial electromagnetic waves can be reduced.
By arranging a plurality of magnetic flux guide grooves on the rotor and enabling the magnetic flux guide grooves to be distributed on the rotor in a penetrating manner along the axial direction of the motor, the radial electromagnetic wave of the lowest order of the motor can be reduced, and noise caused by the radial electromagnetic wave can be further reduced.
In one possible design, the outer diameter of the stator is Φ1, the inner diameter of the stator is Φ2, and the relationship between Φ1 and Φ2 satisfies: 0.57 More than or equal to phi 2/phi 1 more than or equal to 0.5.
In this design, the relationship between the outer diameter and the inner diameter of the stator laminations is further defined. It will be appreciated that the ratio between the inner diameter of the stator laminations and the outer diameter of the stator laminations has a certain effect on the performance of the motor, in particular on the heat dissipation, the magnetic flux density and the overall weight of the motor, and in order to balance the various parameters of the motor, the motor has a high cost performance, and the ratio between the inner diameter of the stator laminations and the outer diameter of the stator laminations is limited within a certain range.
Specifically, the outer diameter of the stator lamination is Φ1, the inner diameter of the stator lamination is Φ2, and the relationship between Φ1 and Φ2 satisfies: 0.57 More than or equal to phi 2/phi 1 more than or equal to 0.5.
The outer diameter of the stator lamination may be 101.15mm and the inner diameter of the stator lamination may be 53.3mm.
The ratio of the inner diameter of the stator punching sheet to the outer diameter of the stator punching sheet is more than or equal to 0.5 and less than or equal to 0.57 by limiting the ratio range between the inner diameter of the stator punching sheet and the outer diameter of the stator punching sheet, so that each parameter of the motor can reach an ideal range, and the motor has higher cost performance.
In one possible design, the rated torque of the motor is T1, the inner diameter of the stator is Φ2, the torque per unit volume of the rotor is T2, wherein the conditions between T1, Φ2 and T2 are:
5.18×10 -7 ≤T1×Φ2 -3 ×T2 -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤T2≤45kN·m·m -3 。
in this design, the range of the combined variable among the rated torque of the motor, the inner diameter of the stator lamination, and the torque per unit volume of the rotor is defined. It can be understood that the output torque of the motor is influenced by the combined variable among the rated torque of the motor, the inner diameter of the stator punching sheet and the unit volume torque of the rotor, and the output torque of the motor can meet the requirements of equipment arranged on the motor by limiting the range of the combined variable.
Specifically, rated torque of the motor is T1, inner diameter of the stator punching sheet is phi 2, unit volume torque of the rotor is T2, and the following conditions are satisfied among T1, phi 2 and T2:
5.18×10 -7 ≤T1×Φ2 -3 ×T2 -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤T2≤45kN·m·m -3 。
the combined variable among the rated torque of the motor, the inner diameter of the stator punching sheet and the unit volume torque of the rotor is more than or equal to 5.18 multiplied by 10 -7 And less than or equal to 1.17X10 -6 And defining a torque per unit volume of the rotor to be 5 kN.m.m or more -3 And less than or equal to 45 kN.m.m -3 Can make electricityThe output torque of the machine meets the requirements of equipment arranged on the motor.
In a second aspect, the present invention proposes a compressor comprising: as in any of the first aspects
A motor in the meter; and the compressing component is connected with the motor.
In a third aspect, the present invention proposes an electrical device comprising: an apparatus main body; and a compressor of the second aspect, the compressor being connected to the apparatus body.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 shows a schematic structural view of a segmented blank of one embodiment of the present invention;
FIG. 2 illustrates a schematic structural view of a stator lamination of one embodiment of the present invention;
FIG. 3 shows a schematic structural view of a rotor sheet according to an embodiment of the present invention;
fig. 4 shows a schematic structural view of a compressor according to another embodiment of the present invention.
The correspondence between the reference numerals and the component names in fig. 1 to 4 is:
100 stators, 110 segmented punching sheets, 111 tooth parts, 1111 first tooth shoes, 1112 second tooth shoes, 112 yoke parts, 113 first connecting parts, 114 second connecting parts, 120 stator punching sheets, 121 groove bodies, 122 avoiding notches, 200 rotors, 210 rotor punching sheets, 211 first magnetic steel grooves, 212 second magnetic steel grooves, 300 compressors, 310 compression parts, 311 cylinders, 312 pistons, 320 crankshafts, 330 main bearings and 340 auxiliary bearings.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
A motor, a compressor, and an electric device provided according to some embodiments of the present invention are described below with reference to fig. 1 to 4.
As shown in fig. 4, in some embodiments of the present invention, there is provided an electric motor including: the stator assembly comprises a stator 100 and a winding wound on the stator 100; the stator includes: the stator laminations 120 are stacked and arranged, and the stator laminations 120 comprise a plurality of split-connectable segmented laminations 110; any one of the plurality of segmented chips 110 includes: the stator punching sheet 120 comprises a tooth 111 and a yoke 112, wherein the yoke 112 is arranged on one side of the tooth 111, which is away from the axis of the stator punching sheet 120, and a groove 121 is arranged on one side of the yoke 112, which is away from the tooth 111. The rotor 200 is arranged in the stator 100, the pole pair number of the rotor 200 is P, the maximum running rotating speed of the rotor 200 is N, and the unit is Hz; the variable frequency assembly is electrically connected to the stator assembly and/or the rotor 200, the carrier frequencies of the variable frequency assembly being met by fc, P, N and fc, fc being 9.ltoreq.fc/P x n.ltoreq.15.6, fc being in Hz.
In the motor provided in this embodiment, a stator slot is provided in the stator 100, and the rotor 200 is disposed in the stator slot, specifically, the stator 100 and the rotor 200 are disposed in a through-shaft manner, and the rotor 200 can rotate relative to the stator 100. Further, windings are further provided on the stator 100, specifically, the windings are provided on the teeth of the stator 100. The stator 100 includes stator laminations 120 stacked together, the stator laminations 120 are provided with a plurality of teeth 111, and the teeth 111 of the stator laminations 120 are stacked together to form a plurality of stator teeth 100. The stator 100 teeth are provided on the inner side of the stator 100 toward the rotor 200. The coils are wound on the teeth of the stator 100 to form windings, and the windings are used for generating magnetic induction wires in an energized state, so that the rotor 200 cuts the magnetic induction wires in the rotating process relative to the stator 100, namely, the rotor 200 rotates relative to the windings, the force for driving the rotor 200 to rotate is generated, and the operation of the motor is further realized.
In order to reduce the difficulty of processing the core of the stator 100 and to improve the slot filling rate of the motor, the stator 100 is provided in a split structure. The stator 100 includes a plurality of segmented laminations 110. Through setting up the piecewise punching 110 into a plurality ofly to when processing stator 100, only processing a plurality of piecewise punching 110 can, assemble stator 100 with a plurality of piecewise punching 110 parts again, compare in processing a complete stator 100, the degree of difficulty of processing piecewise punching 110 part reduces, thereby has reduced manufacturing cost, and this kind of stator 100 simple structure, the automated production to stator 100 is realized to the accessible automated production line.
And, design stator 100 as split type mosaic structure, be convenient for realize the winding of coil and establish, can be around establishing the back and install two adjacent piecemeal punching 110 again, reduce the degree of difficulty of establishing the coil around, consequently can the same circumstances of stator 100 size around establishing more coils, improve the winding of coil and establish the number of turns, be favorable to improving the groove full rate of motor. On the basis of not increasing the size of the motor, the number of turns of the winding coil is increased, so that the output torque and the motor efficiency of the motor can be improved.
The larger the carrier frequency of the variable frequency component is, the closer the waveform of the current output is to the sine waveform, the higher the energy efficiency of the compressor is, and the output torque of the motor is increased. The greater the number of pole pairs of the rotor 200, the greater the output torque of the motor. Although increasing the carrier frequency of the inverter assembly and the pole pair number of the rotor 200 can increase the output torque of the motor, as the carrier frequency of the inverter assembly increases, the loss of switching devices in the motor increases, the overall heat productivity is large, and the motor efficiency decreases, so too much increasing the carrier frequency of the inverter assembly can reduce the motor efficiency. And, as the number of pole pairs of the rotor 200 increases, the size of the motor increases, contrary to the demand for miniaturization of the motor, and the more the number of pole pairs of the rotor 200, the lower the rotation speed of the rotor 200, resulting in a reduction in the working efficiency of the compressor in which the motor is mounted, and a reduction in the working efficiency.
Therefore, when increasing the output torque of the motor, it is necessary to correlate the carrier frequency, the pole pair number of the rotor 200 and the maximum operation rotational speed of the rotor 200, to reduce the size of the motor as much as possible in the case where the output torque can be increased, and to secure the operation efficiency of the compressor, so it is necessary to balance the number of pole pair numbers of the rotor 200 and the maximum rotational speed of the rotor 200, and on this basis, it is also necessary to consider that the heat generation amount of the motor is prevented from being excessively large in the case where the output torque is increased as much as possible.
For the motor with lower pole pair number, the frequency converter outputs a current waveform close to sine, the carrier frequency can meet the requirement of the frequency converter without being excessively high, the lower carrier frequency can obviously reduce the loss of the frequency converter, and the energy efficiency of the compressor is improved.
According to the invention, the three parameters are related, the ratio of the carrier frequency, the pole pair number of the rotor 200 and the maximum rotating speed of the rotor 200 is limited to be between 9 and 15.6, the output torque of the motor can be increased on the basis of ensuring the motor efficiency and the compressor efficiency and reducing the motor size, and the motor can be favorably met under different use situations.
In one possible embodiment, the carrier frequency is fc, 3000.ltoreq.fc.ltoreq.5000.
In this embodiment, when the carrier frequency is greater than 5000Hz, the value of the carrier frequency is large at this time, the loss of the switching device increases, the motor heating amount is large, and the motor efficiency decreases. When the carrier frequency is smaller than 5000Hz, the value of the carrier frequency is smaller, the running stability of the motor is poorer, and the motor oscillates to cause larger running noise. According to the invention, the value of the carrier frequency is limited between 3000 and 5000, so that on the basis of ensuring the motor efficiency, the noise generated when the motor operates can be reduced, and the use experience of a user on the motor can be improved.
In one possible embodiment, p and N are satisfied, 60 < N/p.ltoreq.100.
In this embodiment, the pole pair number of the rotor 200 is associated with the torque of the motor, but simply limiting the number range of pole pairs to adjust the torque easily results in difficulty in achieving the required standard of operation for the displacement of the compressor 300 in which the motor is installed. The greater the rotation speed of the rotor 200, the greater the displacement of the compressor 300, and the greater the pole pair number, the lower the maximum rotation speed of the rotor 200, therefore, the maximum rotation speed of the rotor 200 is associated with the pole pair number of the rotor 200, and the ratio of the maximum rotation speed of the rotor 200 to the pole pair number of the rotor 200 is limited between 60 and 100, so that the torque can be reduced under the condition of the same displacement, the operating point of the motor can be changed, and the efficiency of the motor can be improved.
In one possible embodiment, any one of the plurality of segmented chips 110 further comprises: a first connecting portion 113 and a second connecting portion 114, the first connecting portion 113 being disposed at an edge of the segmented lamination 110 extending radially along the segmented lamination 110; the second connection portion 114 is disposed at the other edge of the segmented lamination 110 extending along the radial direction of the segmented lamination 110, and the first connection portion 113 of one segmented lamination 110 can be matched with the second connection portion 114 of an adjacent segmented lamination 110.
In this embodiment, a first connection portion 113 and a second connection portion 114 are provided on the divided punch 110. Specifically, the first connection portion 113 is disposed at one edge extending along the radial direction of the stator lamination 120, and the second connection portion 114 is disposed at the other edge extending along the radial direction of the stator lamination 120, that is, the first connection portion 113 and the second connection portion 114 are disposed at two sides of the segmented lamination 110 along the circumferential direction of the stator lamination 120. The first connection portion 113 of one divided punch 110 is mated with the second connection portion 114 of the adjacent other divided punch 110, thereby achieving connection of the two divided punches 110. The plurality of segmented punched pieces 110 are arranged along the circumferential direction of the stator 100, and any two adjacent segmented punched pieces 110 are matched through the first connecting part 113 and the second connecting part 114, so that the plurality of segmented punched pieces 110 are connected, and the stator 100 is formed by surrounding.
The first connecting portion 113 and the second connecting portion 114 are arranged on the segmented punching sheet 110, so that the connection stability of the adjacent segmented punching sheets 110 can be improved, and the adjacent two segmented punching sheets 110 are prevented from shaking.
As shown in connection with fig. 1 and 2, in one possible embodiment, the first connection portion 113 is configured as a protrusion and the second connection portion 114 is configured as a recess adapted to the protrusion.
In this embodiment, the first connecting portion 113 is configured as a protruding member, and the second connecting portion 114 is configured as a groove, that is, a structure of concave-convex fit between the first connecting portion 113 and the second connecting portion 114, the groove is adapted to the protrusion, so as to achieve connection fit of the first connecting portion 113 and the second connecting portion 114.
Through setting the first connecting portion 113 as the protruding member, set up the second connecting portion 114 as the recess with protruding member matched with, made between first connecting portion 113 and the second connecting portion 114 formed unsmooth matched with structure, promoted the connection reliability, reduced the processing degree of difficulty.
As shown in connection with fig. 1, 2 and 4, in one possible embodiment, the segmented stamping 110 further comprises: the relief notch 122, the relief notch 122 being a distance from the first tooth shoe 1111 of the tooth 111 that is less than the distance from the relief notch 122 to the second tooth shoe 1112 of the tooth 111; wherein the rotor 200 passes through the first tooth shoe 1111 and the second tooth shoe 1112 in sequence in the rotation direction of the rotor 200.
In this embodiment, the stator 100 further includes a relief notch 122, and the relief notch 122 is provided on the surface of the tooth 111 for facing the rotor 200. The tooth 111 includes a first tooth shoe 1111 and a second tooth shoe 1112, and the rotor 200 passes through the first tooth shoe 1111 and the second tooth shoe 1112 in this order in the rotational direction of the rotor 200. The distance between the relief notch 122 and the first tooth shoe 1111 is smaller than the distance between the relief notch 122 and the second tooth shoe 1112, i.e., the relief notch 122 is closer to the first tooth shoe 1111.
By providing the avoidance notch 122 on the surface of the tooth 111 facing the rotor 200, the protruding member on the rotor 200 can be avoided through the avoidance notch 122 in the process of assembling the stator 100 and the rotor 200, and assembly interference is avoided.
Specifically, the avoidance notch 122 is arranged on the stator 100, so that the space phase of the air gap permeance of the stator 100 and the rotor 200 can be effectively adjusted, the phase of the first-order permeance tooth harmonic of the magnetic field is changed, and the first-order permeance tooth harmonic and the armature magnetic potential harmonic are mutually offset, thereby remarkably reducing the radial electromagnetic force of the motor and being beneficial to reducing the noise during the operation of the motor.
In one possible embodiment, the stator 100 further includes: aluminum coils wound around the teeth 111.
In this embodiment, the coil wound around the tooth 111 is made of aluminum, that is, the coil is formed by winding aluminum wire around the tooth 111, the unit price of aluminum wire is low, and the use of aluminum wire as the coil can reduce the material cost of the motor in large part.
In one possible embodiment, the stator 100 has a number of teeth Z, Z and N, with 20 < N/Z.ltoreq.34.
In this embodiment, the maximum motor rotation speed affects the torque of the motor, but simply limiting the maximum motor rotation speed to be out of the limit of the number of teeth of the stator 100 easily causes a change in the harmonic magnetic field of the motor to affect the efficiency of the motor. Therefore, the combination of the number of teeth of the stator 100 and the maximum rotation speed of the rotor 200 can reduce the torque under the condition of the same displacement, change the operating point of the motor operation, and is beneficial to improving the efficiency of the motor.
As shown in connection with fig. 3 and 4, in one possible embodiment, the motor further comprises: the plurality of magnetic flux guide grooves penetrate through the rotor 200 in the axial direction of the motor.
In this embodiment, a plurality of flux guide slots are also provided on the rotor 200. Specifically, the rotor 200 is formed by stacking a plurality of rotor punching sheets 210, and a plurality of magnetic flux guiding grooves are disposed on any rotor punching sheet 210, and the magnetic flux guiding grooves are distributed on the rotor punching sheet 210 in a penetrating manner along the axial direction of the motor, that is, are distributed on the rotor punching sheet 210 in a penetrating manner along the axial direction of the motor. It will be appreciated that during operation of the motor, radial electromagnetic waves may be generated which may lead to increased noise. In order to improve noise of the motor, a plurality of magnetic flux guide grooves are formed in the rotor 200 in the axial direction of the motor, so that radial electromagnetic waves of the lowest order of the motor can be reduced, and noise caused by the radial electromagnetic waves can be reduced.
By providing a plurality of magnetic flux guide grooves in the rotor 200 and allowing the magnetic flux guide grooves to pass through and be distributed in the rotor 200 in the axial direction of the motor, the radial electromagnetic wave of the lowest order of the motor can be reduced, and noise caused by the radial electromagnetic wave can be reduced.
The rotor punching sheet 210 is provided with a first magnetic steel groove 211 and a second magnetic steel groove 212, and the first magnetic steel groove 211 and the second magnetic steel groove 212 can be respectively filled with magnetic steel to form a pair of magnetic poles.
In one possible embodiment, the rotor 200 is taken along a radial direction of the rotor 200, and the outer profile of the cross section of the rotor 200 is circular.
In this embodiment, the rotor 200 is taken along the radial direction of the rotor 200, and the cross section of the rotor 200 in the radial direction may or may not be a regular circle, and a circle passing through the outermost contour of the rotor 200 is set as a contour circle, that is, a point or line where the contour circle of the radial section of the rotor 200 passes through the center of the circle farthest from the radial section of the rotor 200, and the contour circle passes through the axis of the rotor 200, and if the radial section of the rotor 200 is a regular circle, the contour circle coincides with the outer edge of the radial section of the rotor 200.
Further, the outer profile of the rotor 200 may be circular. It can be appreciated that, in the working process of the motor, the rotor 200 is in a rotating state, and the outer contour of the rotor 200 is set to be circular, so that the wind abrasion loss generated in the rotating process of the rotor 200 can be effectively reduced, and the working efficiency of the motor is improved.
As shown in fig. 2, in one possible embodiment, the outer diameter of the stator 100 is Φ1, the inner diameter of the stator 100 is Φ2, and the relationship between Φ1 and Φ2 satisfies: 0.57 More than or equal to phi 2/phi 1 more than or equal to 0.5.
In this embodiment, the relationship between the outer diameter and the inner diameter of the stator laminations 120 is further defined. It will be appreciated that the ratio between the inner diameter of the stator laminations 120 and the outer diameter of the stator laminations 120 has an effect on the performance of the motor, and in particular, on the heat dissipation, the magnetic flux density and the overall weight of the motor, and in order to balance the various parameters of the motor, to provide a high cost performance of the motor, the ratio between the inner diameter of the stator laminations 120 and the outer diameter of the stator laminations 120 is limited to a certain range.
Specifically, the outer diameter of the stator lamination 120 is Φ1, the inner diameter of the stator lamination 120 is Φ2, and the relationship between Φ1 and Φ2 satisfies: 0.57 More than or equal to phi 2/phi 1 more than or equal to 0.5.
The outer diameter of the stator laminations 120 can be 101.15mm and the inner diameter of the stator laminations 120 can be 53.3mm.
By limiting the range of the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120, the ratio between the inner diameter of the stator lamination 120 and the outer diameter of the stator lamination 120 is greater than or equal to 0.5 and less than or equal to 0.57, so that each parameter of the motor can reach an ideal range, and the motor has higher cost performance.
In one possible embodiment, the rated torque of the motor is T1, the inner diameter of the stator 100 is Φ2, and the torque per unit volume of the rotor 200 is T2, wherein T1, Φ2, and T2 satisfy:
5.18×10 -7 ≤T1×Φ2 -3 ×T2 -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤T2≤45kN·m·m -3 。
in this embodiment, the range of the combination variable among the rated torque of the motor, the inner diameter of the stator lamination 120, and the torque per unit volume of the rotor 200 is defined. As will be appreciated, the combined variable among the rated torque of the motor, the inner diameter of the stator laminations 120 and the unit volume torque of the rotor 200 affects the output torque of the motor, and by limiting the range of the combined variable, the output torque of the motor can be made to meet the requirements of the equipment in which the motor is installed.
Specifically, the rated torque of the motor is T1, the inner diameter of the stator lamination 120 is Φ2, and the torque per unit volume of the rotor 200 is T2, wherein T1, Φ2, and T2 satisfy the following conditions:
5.18×10 -7 ≤T1×Φ2 -3 ×T2 -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤T2≤45kN·m·m -3 。
by defining a combination variable of 5.18X10 or more among rated torque of the motor, inner diameter of the stator lamination 120, and torque per unit volume of the rotor 200 -7 And less than or equal to 1.17X10 -6 And defining a torque per unit volume of the rotor 200 to be 5kN or morem·m -3 And less than or equal to 45 kN.m.m -3 The output torque of the motor can be made to meet the requirements of the equipment provided by the motor.
As shown in fig. 1, in one possible embodiment, a groove 121 is disposed on a side of the yoke 112 facing away from the tooth 111, that is, the outer periphery of the stator 100 is provided with the groove 121, and the groove 121 can increase the space between the stator 100 and other components located on the outer periphery side of the stator 100, so as to facilitate oil return of the compressor 300, improve smoothness of oil return, and facilitate operation stability of the compressor 300.
A large number of coils are wound in the stator groove, so that the space for oil liquid circulation in the stator groove is small, and the circulating area of oil return can be increased by arranging the groove body on the stator.
The tank 121 includes a trapezoidal groove. The trapezoidal groove 121 is convenient to be clamped with the tooling, so that the tooling can drive the plurality of block punching sheets 110 to move. In the winding process, the plurality of segmented punched sheets 110 are distributed in a straight line, and after the winding is completed, the tooling drives the plurality of segmented punched sheets 110 to enclose to form the stator punched sheet 120. Setting the slot 121 as a trapezoidal slot can improve the convenience of the tooling to drive the segmented stamping 110 to move.
In one possible application, the other slots 121 of the plurality of slots 121, except for the trapezoidal slots, are rectangular. By arranging at least one of the groove bodies 121 as a rectangular groove, the rectangular groove can be used as an identification groove, and positioning of the motor can be achieved through the identification groove, so that assembly of the motor to the compressor is facilitated.
In one possible embodiment, the yoke 112 is taken along a radial direction of the stator plate 120, and the slot 121 passes through a center line of a cross section of the yoke 112.
In this embodiment, the groove 121 passes through the center line of the yoke 112, which can further improve the oil return effect, and improve the smoothness of the oil return, which is beneficial to improving the operation stability of the compressor 300.
As shown in fig. 4, in an embodiment of the present invention, there is provided a compressor 300, the compressor 300 including: a motor and compression member 310 in any of the possible embodiments described above, the motor being coupled to the compression member 310.
Specifically, the compression part 310 includes a cylinder 311 and a piston 312, and in order to enable a motor to be connected with the compression part 310 and drive the compression part 310 to operate, some connectors are further provided in the compressor 300, specifically including a crankshaft 320, a main bearing 330 and a sub bearing 340, the motor is connected with the piston 312 through the crankshaft 320 to drive the piston 312 to move in the cylinder 311, and the main bearing 330 and the sub bearing 340 are provided outside the crankshaft 320 to play a supporting and limiting role on the crankshaft 320, so that the crankshaft 320 can normally rotate.
The compressor 300 according to the present embodiment includes the motor according to the above embodiment, and thus the compressor 300 has all the advantages of the motor according to any one of the above possible embodiments.
In an embodiment of the present invention, an electrical apparatus is provided, including: the apparatus main body and the compressor in the above embodiments, the compressor is connected to the apparatus main body.
The electrical equipment provided by the embodiment comprises an equipment main body and a compressor, wherein the compressor is connected with the equipment main body, and the compressor and the equipment main body are operated together in a matched mode when the electrical equipment is operated so that the electrical equipment can be operated normally.
The electrical equipment provided by the application comprises the compressor provided by the embodiment, so that the electrical equipment has all the beneficial effects of the compressor provided by the embodiment.
In the present invention, the term "plurality" means two or more, unless explicitly defined otherwise. The terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; "coupled" may be directly coupled or indirectly coupled through intermediaries. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. An electric machine, comprising:
a stator assembly including a stator and a winding wound on the stator;
the stator includes:
the stator punching sheets comprise a plurality of split punching sheets which can be connected in a split mode;
any one of the plurality of segmented chips comprises:
a tooth portion;
the yoke part is arranged on one side of the tooth part, which is away from the axis of the stator punching sheet, and a groove body is arranged on one side of the yoke part, which is away from the tooth part;
the rotor is arranged in the stator, the pole pair number of the rotor is P, and the maximum running rotating speed of the rotor is N and is expressed in Hz;
and the frequency conversion assembly is electrically connected with the stator assembly and/or the rotor, the carrier frequencies of the frequency conversion assembly are fc, P, N and fc are met, fc/(P multiplied by N) is less than or equal to 9 and less than or equal to 15.6, and the unit of fc is Hz.
2. An electric machine according to claim 1, characterized in that,
the carrier frequency is fc, and 3000 fc is less than or equal to 5000.
3. An electric machine according to claim 1, characterized in that,
p and N are satisfied, and N/p is more than 60 and less than or equal to 100.
4. An electric machine according to claim 1, characterized in that,
any one of the plurality of segmented chips further comprises:
the first connecting part is arranged at one edge of the segmented punching sheet extending along the radial direction of the segmented punching sheet;
the second connecting parts are arranged at the other edge of the segmented punching sheet extending along the radial direction of the segmented punching sheet, and the first connecting part of one segmented punching sheet can be matched with the second connecting part of the adjacent segmented punching sheet.
5. The motor of claim 4, wherein the motor is configured to control the motor to drive the motor,
the first connection portion is configured as a protrusion and the second connection portion is configured as a recess adapted to the protrusion.
6. The electric machine of claim 1, wherein the segmented lamination further comprises:
the avoidance notch is arranged on the surface of the tooth part, which is used for facing the rotor, and the distance between the avoidance notch and the first tooth shoe of the tooth part is smaller than the distance between the avoidance notch and the second tooth shoe of the tooth part;
wherein, along the direction of rotation of rotor, the rotor passes through first tooth boots and second tooth boots in proper order.
7. The electric machine of claim 6, wherein the stator further comprises:
and an aluminum coil wound around the tooth portion.
8. An electric machine according to any one of claims 1 to 7, characterized in that,
the number of teeth of the stator is Z, Z and N are satisfied, and N/Z is more than 20 and less than or equal to 34.
9. The motor according to any one of claims 1 to 7, characterized in that the motor further comprises:
the plurality of magnetic flux guide grooves penetrate through the rotor along the axial direction of the motor.
10. An electric machine according to any one of claims 1 to 7, characterized in that,
the outer diameter of the stator is phi 1, the inner diameter of the stator is phi 2, and the relation between phi 1 and phi 2 satisfies the following conditions: 0.57 More than or equal to phi 2/phi 1 more than or equal to 0.5.
11. The electric machine according to any one of claims 1 to 7, characterized in that the rated torque of the electric machine is T1, the inner diameter of the stator is Φ2, the torque per unit volume of the rotor is T2, wherein the conditions between T1, Φ2 and T2 are:
5.18×10 -7 ≤T1×Φ2 -3 ×T2 -1 ≤1.17×10 -6 ，
5kN·m·m -3 ≤T2≤45kN·m·m -3 。
12. a compressor, comprising:
the motor of any one of claims 1 to 11; and
and the motor is connected with the compression part.
13. An electrical device, comprising:
an apparatus main body; and
the compressor of claim 12, wherein said compressor is coupled to said apparatus body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494417.4A CN114079333B (en) | 2021-12-08 | 2021-12-08 | Motor, compressor and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111494417.4A CN114079333B (en) | 2021-12-08 | 2021-12-08 | Motor, compressor and electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114079333A CN114079333A (en) | 2022-02-22 |
| CN114079333B true CN114079333B (en) | 2023-07-28 |
Family
ID=80284491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111494417.4A Active CN114079333B (en) | 2021-12-08 | 2021-12-08 | Motor, compressor and electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114079333B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353521A (en) * | 2003-05-28 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| CN2681439Y (en) * | 2004-01-14 | 2005-02-23 | 华中科技大学 | A self shunt excitation AC excitation power generating device |
| JP2006109623A (en) * | 2004-10-06 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Inverter control device and hermetic electric compressor |
| JP2019103325A (en) * | 2017-12-06 | 2019-06-24 | アイシン精機株式会社 | Motor controller |
| CN110313126A (en) * | 2017-03-29 | 2019-10-08 | 爱信艾达株式会社 | Rotary electric machine controller |
| CN112564317A (en) * | 2020-11-30 | 2021-03-26 | 安徽美芝精密制造有限公司 | Stator core, stator, permanent magnet synchronous motor, compressor and refrigeration equipment |
-
2021
- 2021-12-08 CN CN202111494417.4A patent/CN114079333B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004353521A (en) * | 2003-05-28 | 2004-12-16 | Matsushita Electric Ind Co Ltd | Hermetic compressor |
| CN2681439Y (en) * | 2004-01-14 | 2005-02-23 | 华中科技大学 | A self shunt excitation AC excitation power generating device |
| JP2006109623A (en) * | 2004-10-06 | 2006-04-20 | Matsushita Electric Ind Co Ltd | Inverter control device and hermetic electric compressor |
| CN110313126A (en) * | 2017-03-29 | 2019-10-08 | 爱信艾达株式会社 | Rotary electric machine controller |
| JP2019103325A (en) * | 2017-12-06 | 2019-06-24 | アイシン精機株式会社 | Motor controller |
| CN112564317A (en) * | 2020-11-30 | 2021-03-26 | 安徽美芝精密制造有限公司 | Stator core, stator, permanent magnet synchronous motor, compressor and refrigeration equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114079333A (en) | 2022-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN117424358A (en) | Stator, motor, compressor and electrical equipment | |
| CN114069906B (en) | Stator, motor, compressor and electrical equipment | |
| CN112467897A (en) | Motor, compressor and refrigeration plant | |
| CN114094732B (en) | Stator, motor, compressor and electrical equipment | |
| CN114094731B (en) | Stator, motor, compressor and electrical equipment | |
| CN216649339U (en) | Stator, motor, compressor and electrical equipment | |
| CN216290376U (en) | Motor, compressor and electrical equipment | |
| CN112583143B (en) | Stator core, stator, permanent magnet synchronous motor, compressor and refrigeration equipment | |
| CN114069907B (en) | Motor, compressor and electrical equipment | |
| CN114079333B (en) | Motor, compressor and electrical equipment | |
| WO2022110306A1 (en) | Stator core, stator, permanent magnet synchronous motor, compressor, and refrigeration device | |
| CN112467907A (en) | Rotor, permanent magnet synchronous motor, compressor and refrigeration equipment | |
| CN114069905B (en) | Stator, motor, compressor and electrical equipment | |
| CN216356120U (en) | Stator, motor, compressor and electrical equipment | |
| CN218958633U (en) | Stator punching sheet for stator of motor, stator and motor | |
| CN112564318B (en) | Stator punching sheet, stator core, motor, compressor and refrigeration equipment | |
| CN213521442U (en) | Rotor, permanent magnet synchronous motor, compressor and refrigeration equipment | |
| CN213602456U (en) | Stator punching sheet, stator core, permanent magnet synchronous motor, compressor and refrigeration equipment | |
| CN116191700A (en) | Motor, electric appliance and vehicle | |
| CN114069908A (en) | Stator, motor, compressor and electrical equipment | |
| CN219554685U (en) | Motor, compressor and vehicle | |
| CN223156785U (en) | Motor, rotary compressor and refrigeration equipment | |
| CN114142633B (en) | Stator, motor, compressor and refrigeration plant | |
| CN218920086U (en) | Rotor punching sheet, rotor iron core, motor and industrial equipment | |
| CN219643665U (en) | Motor, electric appliance and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |