CN101001038B - Permanent magnet type synchronous motor - Google Patents
Permanent magnet type synchronous motor Download PDFInfo
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- CN101001038B CN101001038B CN200610168430XA CN200610168430A CN101001038B CN 101001038 B CN101001038 B CN 101001038B CN 200610168430X A CN200610168430X A CN 200610168430XA CN 200610168430 A CN200610168430 A CN 200610168430A CN 101001038 B CN101001038 B CN 101001038B
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000011218 segmentation Effects 0.000 claims description 24
- 230000015572 biosynthetic process Effects 0.000 description 24
- 230000002093 peripheral effect Effects 0.000 description 9
- 230000005415 magnetization Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
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Abstract
The invnetion provides a permanent magnet synchronous motor, capable of preventing the magnetic force of a stator core from being reduced, and reducing the torque of a tooth space. In a motor (1), a stator core (31) comprises of a plurality of divided iron cores (310), a stator (4) has a divided permanent-magnet (420) mounted in the circumferential direction of a revolving shaft (41). In the divided iron cores (310), a gap (38) is formed between the front ends of the adjacent teeth (311), an auxiliary slot (39) is formed on the front end face (313), for dividing the the front end face (313) in the circumferential direction based on a equal angle.
Description
Technical field
The present invention relates to a kind of permanent-magnet type synchronization motor (below be called motor), especially relate to the reduction cogging torque (Japanese: structure コ ギ Application グ ト Le Network) in the permanent-magnet type synchronization motor.
Background technology
Permanent-magnet type synchronization motor generally comprises stator and rotor; Said stator has: dispose the stator core of a plurality of utmost point teeth of giving prominence to radial direction and be wound on the coil on the utmost point tooth across the form equal angles compartment of terrain of grooving with the centre; Said rotor has permanent magnet, and this permanent magnet circumferentially alternately disposes the S utmost point and the N utmost point in the relative side face upper edge of front end face across voids ground and utmost point tooth.
In this motor, because of the magnetic pull that acts between stator core and the permanent magnet produces cogging torque, because this cogging torque can cause the rotation of rotor uneven, so not good.Therefore, propose a kind of front end face and form the technology (for example with reference to patent documentation 1) that the auxiliary tank that is called illusory grooving reduces the cogging torque of whole motor at utmost point tooth.
Patent documentation 1: japanese patent laid-open 11-18326 communique
But; In the occasion of as patent documentation 1, using the so-called one-piece type stator core that has a plurality of utmost point teeth and upwards be connected with in week; Can enter into for the line mouth that the coiling coil is used in the grooving of utmost point between cog formation, have to widen the leading section gap to each other of adjacent teeth.Therefore, the cogging torque that produces in the leading section gap to each other of adjacent teeth becomes big, so in order to offset this cogging torque, also need strengthen auxiliary tank.Consequently, the problem that magnetic force descends of gathering that has stator core.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of motor that suppresses the decline that gathers magnetic force of stator core and can reduce cogging torque.
In order to address the above problem; Permanent-magnet type synchronization motor of the present invention; Comprise stator and rotor, said stator has: dispose the stator core of a plurality of utmost point teeth of giving prominence to radial direction and be wound on the coil on the said utmost point tooth across the form equal angles compartment of terrain of grooving with the centre, said rotor has permanent magnet; This permanent magnet is circumferentially alternately disposing the S utmost point and the N utmost point across the relative side face upper edge of the front end face of voids and said utmost point tooth; It is characterized in that said stator core is formed with this front end face along the auxiliary tank of circumferentially cutting apart to equal angles along circumferentially disposing a plurality of segmentation iron cores with said utmost point tooth on the front end face of said utmost point tooth.
In the present invention, owing to use segmentation iron core, constitute stator so segmentation iron core can behind winding coil on the segmentation iron core, circumferentially be disposed again.Therefore, the line mouth that the coiling coil is used there is no need the leading section gap to each other through utmost point tooth, thereby can set the leading section gap to each other of utmost point tooth narrower.Therefore, can reduce the cogging torque that produces in the leading section of adjacent teeth gap to each other.In addition, owing on the front end face of utmost point tooth, be formed with this front end face along the auxiliary tank of circumferentially cutting apart to equal angles, so can reduce the cogging torque of whole motor.And because the leading section gap to each other of utmost point tooth is narrower, correspondingly auxiliary tank also can narrow down, thereby can suppress to form the reduction that gathers magnetic force of the stator core that auxiliary tank causes.In addition, when on the front end face of utmost point tooth, forming auxiliary tank, can suppress the generation of vortex flow.
In the present invention, said permanent magnet preferably is made up of a plurality of dividing permanent-magnet bodies along circumferentially configuration.When so constituting, compare, can reduce cost with the situation of using one-piece type permanent magnet.In addition, if the dividing permanent-magnet body then when magnet is magnetized, is not limited to magnetization radially, also can easily carry out incorgruous magnetization such as parallel magnetization.The waveform that thus, can easily make induced voltage is near sinusoidal wave.
In the present invention, said a plurality of dividing permanent-magnet body state configuration of preferably separating to each other with circumferential adjacent dividing permanent-magnet body.When so constituting, can not contact or deliberately make its discontiguous occasion to each other,, also can make the part of pole change certain through the interval between the dividing permanent-magnet body is set at certain intervals at the dividing permanent-magnet body.
In the present invention, said a plurality of dividing permanent-magnet body is preferably with the state of contact configuration to each other of circumferentially adjacent dividing permanent-magnet body.When so constituting, can be easily and carry out efficiently the dividing permanent-magnet body is configured in the operation when circumferential.In addition, because with the state of contact configuration to each other of dividing permanent-magnet body, so can make the part of pole change certain.
In the present invention, the face that preferably front end face with said utmost point tooth of said a plurality of dividing permanent-magnet bodies is relative constitutes with the arc surface of following curvature: the size that makes said space is in circumferential central narrow, wide in circumferential both sides.The front end face of said utmost point tooth and the space of permanent magnet be narrow more then gathers magnetic force and induced voltage is bigger but cogging torque is also big more, but adopts this shape, then can not reduce to gather magnetic force and induced voltage ground reduces cogging torque.
In the present invention, when said a plurality of utmost point teeth have in front during to the leading section of circumferential expansion, the aperture area in the gap that preferably forms between the leading section of the adjacent teeth in said a plurality of utmost point teeth equates with the aperture area of said auxiliary tank basically.When so constituting, because the cogging torque that produces in the leading section gap to each other of adjacent teeth is basic identical with the cogging torque that produces at auxiliary tank, so can reduce the cogging torque of whole motor.
In the present invention, preferably said a plurality of utmost point teeth have at the leading section of front to circumferential expansion, and the depth dimensions in the gap that forms between the leading section of the adjacent teeth in said a plurality of utmost point teeth equates with the depth dimensions of said auxiliary tank basically.When so constituting, because the cogging torque that produces in the leading section gap to each other of adjacent teeth is basic identical with the cogging torque that produces at auxiliary tank, so can reduce the cogging torque of whole motor.
In the present invention, preferably said a plurality of utmost point teeth have at the leading section of front to circumferential expansion, and the internal volume in the gap that forms between the leading section of the adjacent teeth in said a plurality of utmost point teeth equates with the internal volume of said auxiliary tank basically.When so constituting, because the cogging torque that produces in the leading section gap to each other of adjacent teeth is identical with the cogging torque that produces at auxiliary tank, so can reduce the cogging torque of whole motor.
In the present invention, said auxiliary tank be preferably in be formed with on the front end face of said utmost point tooth a plurality of.
In the present invention, said rotor can be configured in the inboard of said stator.In addition, in the present invention, said rotor can be configured in the outside of said stator.
In the present invention, preferably said a plurality of utmost point teeth have at the leading section of front to circumferential expansion, and the A/F in the gap that forms between the leading section of the adjacent teeth in said a plurality of utmost point teeth equates with the A/F of said auxiliary tank basically.When so constituting, because the cogging torque that produces in the leading section gap to each other of adjacent teeth is basic identical with the cogging torque that produces at auxiliary tank, so can reduce the cogging torque of whole motor.
In the present invention, because stator uses segmentation iron core, constitute stator so segmentation iron core can behind winding coil on the segmentation iron core, circumferentially be disposed again.Therefore, the line mouth that the coiling coil is used there is no need the leading section gap to each other through utmost point tooth, thereby can set the leading section gap to each other of utmost point tooth narrower.Therefore, can reduce the cogging torque that produces in the leading section of adjacent teeth gap to each other.In addition, owing on the front end face of utmost point tooth, be formed with this front end face along the auxiliary tank of circumferentially cutting apart to equal angles, so can reduce the cogging torque of whole motor.And because the leading section gap to each other of utmost point tooth is narrower, correspondingly auxiliary tank also can narrow down, thereby can suppress to form the reduction that gathers magnetic force of the stator core that auxiliary tank causes.In addition, when on the front end face of utmost point tooth, forming auxiliary tank, can suppress the generation of vortex flow.
Description of drawings
Fig. 1 is the cutaway view that the formation of motor of the present invention has been used in expression.
Fig. 2 (a) and (b) are respectively the cutaway view of the expression formation of having used stator core of the present invention and the key diagram of formation of expression auxiliary tank.
Fig. 3 is the key diagram of relation of formation and the cogging torque and the induced voltage of expression segmentation iron core.
(component symbol explanation)
1 motor, 3 stators
4 rotors, 31 stator cores
310 segmentation iron cores, 311 utmost point teeth
312 leading sections, 313 front end faces
38 leading sections gap 39 auxiliary tanks to each other
41 rotating shafts, 42 permanent magnets
420 dividing permanent-magnet bodies
Embodiment
Describe having used motor of the present invention with reference to the accompanying drawings.The present invention is all applicable for inner-rotor type and outer-rotor type, but following the example that the present invention is applied on the inner-rotor type motor is described.
Embodiment 1:
Fig. 1 is the cutaway view that the formation of motor of the present invention has been used in expression.Fig. 2 (a) and (b) are respectively the cutaway view of the expression formation of having used stator core of the present invention and the key diagram of formation of expression auxiliary tank.
(whole formation)
As shown in Figure 1, the motor 1 of present embodiment comprises: the motor field frame 22 of tubular, the rotor 4 that is configured in the stator 3 in this motor field frame 22 and is configured in these stator 3 inboards.Both end sides opening on the motor central axis M direction of motor field frame 22; The form of side's peristome is installed on the motor field frame 22 bearing holding member 21 to cover wherein, and bearing holding member 23 is installed on the motor field frame 22 with the form that covers the opposing party's peristome.Therefore, bearing holding member 21 and bearing holding member 23 use as housing parts.Rotor 4 has permanent magnet 42 at the outer peripheral face of rotating shaft 41, and the bearing 43,44 that remains on the bearing holding member 21,23 is being installed on the both ends of rotating shaft 41.
Shown in Fig. 1 and Fig. 2 (a); Stator 3 comprises stator core 31 and coil 32; Stator core 31 disposes a plurality of utmost point teeth 311 side-prominent in radial direction with the centre across the form equal angles compartment of terrain in the gap that is called grooving 35; Coil 32 is wound on the utmost point tooth 311 across insulator 33, and it is relative with the outer peripheral face of permanent magnet 42 that the front end face 313 of utmost point tooth 311 separates voids ground.At this, coil 32 with thin in radially interior all sides, reel in the thick form of outer circumferential side.
(formation of stator core)
In the motor 1 that so constitutes, stator core 31 constitutes: a plurality of segmentation iron cores 310 with utmost point tooth 311 circumferential first-class angle intervals be configured to circular.In the present embodiment, stator 3 is 9 utmost points, and 9 segmentation iron cores 310 are that the center is in upwards 40 ° of ground configurations at interval of week with motor central axis M.In these a plurality of segmentation iron cores 310, utmost point tooth 311 separately has the leading section 312 that extends to circumferential both sides in front, is formed with gap 38 to each other at the leading section 312 of adjacent teeth 311.But; In the present embodiment; Because stator core 31 uses segmentation iron core 310; So can behind winding coil 32 on the segmentation iron core 310, circumferentially dispose segmentation iron core 310 again constitutes stator 3, therefore, the line mouth of coiling coil 32 usefulness there is no need leading section 312 gap 38 to each other through utmost point tooth 311.Therefore, can set the circumferential openings width d1 and the radial depth size d2 in leading section 312 gap 38 to each other narrower.For example, in the present embodiment, the A/F d1 in the gap 38 that leading section 312 forms to each other is 0.8mm, and depth dimensions d2 is 0.5mm.In the present embodiment, stator core 31 is through pressure processing etc. laminal electromagnetic steel plate to be formed the regulation shape, and the range upon range of multi-disc of laminal electromagnetic steel plate is constituted.
But, also can produce cogging torque even the leading section 312 of utmost point tooth 311 gap 38 to each other is narrower, therefore, in the present embodiment, on the front end face 313 of utmost point tooth 311, be formed with the auxiliary tank 39 of the grooving shape that this front end face 313 circumferential equal angles ground are cut apart.This auxiliary tank 39 forms on motor central axis M direction continuously.The quantity of this auxiliary tank 39 can be set at optimum value according to size of segmentation iron core 310 etc.; But in the present embodiment; Because a segmentation iron core 310 is that the center occupies 40 ° angle θ c with motor central axis M, so, be the center with two auxiliary tanks 39 of angle intervals formation of 13.3 ° with motor central axis M at the front end face 313 of utmost point tooth 311; Thereby at the front end face 313 of utmost point tooth 311, trizonal angular range, theta a, θ b are 13.33 °.In the present embodiment, auxiliary tank 39 forms angle type shape.
(formation of permanent magnet)
In the present embodiment, the permanent magnet 42 around the rotating shaft 41 of being disposed at of rotor 4 is configured to circular a plurality of dividing permanent-magnet bodies 420 by the equal angles compartment of terrain and constitutes.In the present embodiment, permanent magnet 42 is made up of six dividing permanent-magnet bodies 420.
At this, six dividing permanent-magnet bodies 420 do not stay state of contact configuration with gap to each other with circumferential adjacent dividing permanent-magnet body 420.
In addition; It is the arc surface at center that the inner peripheral surface of six dividing permanent-magnet bodies 420 forms with motor central axis M, but the outer peripheral face relative with the front end face of utmost point tooth 311 313 constitutes with the arc surface of following curvature: make and the front end face 313 of utmost point tooth 311 between the size in the space that forms in circumferential central narrow, wide in circumferential both sides.
(the main effect of present embodiment)
As stated, in the present embodiment,, constitute stator 3 so segmentation iron core 310 can behind winding coil 32 on the segmentation iron core 310, circumferentially be disposed again because stator core 31 uses segmentation iron core 310.Therefore, the line mouth of coiling coil 32 usefulness there is no need leading section 312 gap 38 to each other through utmost point tooth 311, thereby can set leading section 312 gap 38 to each other narrower.Therefore, the cogging torque that produces in leading section 312 gap 38 to each other of utmost point tooth 311 is little.
In addition, owing on the front end face 313 of utmost point tooth 311, be formed with the auxiliary tank 39 that this front end face 313 circumferential equal angles ground are cut apart, so can reduce the cogging torque of whole motor.
For example; To on the front end face 313 of utmost point tooth 311 being to be that the center is formed on the situation that circumferentially departs from equal angles position at interval with auxiliary tank 39 with motor central axis M on the situation that do not form auxiliary tank 39 on circumferential equal angles compartment of terrain, center situation about forming, the front end face 313 shown in Fig. 3 (b), the front end face 313 shown in Fig. 3 (c) with motor central axis M shown in Fig. 3 (a) at utmost point tooth 311 at utmost point tooth 311 with auxiliary tank 39; Cogging torque and induced voltage are simulated, obtain the result shown in Fig. 3 (d), (e).Fig. 3 (d) is the chart of the analog result of comparison cogging torque, and Fig. 3 (e) is the chart of the analog result of comparison induced voltage.In addition; In Fig. 3 (d), (e); Measurement result during auxiliary tank 39 equal angles compartment of terrains are formed shown in Fig. 3 (a) is represented with solid line La; Shown in Fig. 3 (b) do not form auxiliary tank 39 time measurement result represent that with solid line Lb the measurement result when auxiliary tank 39 is formed on shown in Fig. 3 (c) departed from interval position of equal angles is represented with solid line Lc.
Can know by Fig. 3 (d), when not forming auxiliary tank 39 (shape shown in Fig. 3 (b)) with auxiliary tank 39 is formed on when departing from interval position of equal angles (shape shown in Fig. 3 (c)) and compares, the formation of the present invention shown in Fig. 3 (a) can significantly reduce cogging torque.In addition; Shown in Fig. 3 (e); With adopt the formation (shape shown in Fig. 3 (b)) do not form auxiliary tank 39 and auxiliary tank 39 be formed on formation (shape shown in Fig. 3 (c)) time of departing from equal angles position at interval and compare, can not cause induced voltage to descend when adopting the formation shown in Fig. 3 (a) yet.
And; Adopt present embodiment; Because stator core 31 uses segmentation iron core 310; So can set leading section 312 gap 38 to each other of adjacent teeth 311 narrower, the auxiliary tank 39 that forms on the front end face 313 of utmost point tooth 311 be narrowed down, thereby can suppress to form the reduction that gathers magnetic force of the stator core 31 that auxiliary tank 39 causes.
And when forming auxiliary tank 39 on the front end face 313 at utmost point tooth 311, the concavo-convex of formation makes that the sky in the magnetic circuit is big at a distance from change on the front end face that gathers magnetic 313, and the magnetic flux that gathers magnetic reduces locally.Thus, the overcurrent that produces on the surface of the front end face 313 that gathers magnetic can be reduced in, thereby the generation of vortex flow can be suppressed.
At this, the circumferential openings width of auxiliary tank 39 preferably with the leading section 312 of adjacent teeth 311 between the circumferential openings width d1 in gap 38 of formation equate.In addition, the radial depth size of auxiliary tank 39 preferably with the leading section 312 of adjacent teeth 311 between the radial depth size d2 in gap 38 of formation equate.In addition; The aperture area of single auxiliary tank 39 preferably with the leading section 312 of adjacent teeth 311 between the aperture area in the gap 38 that forms equate that and the internal volume in the gap 38 of formation equates between the best leading section 312 with adjacent teeth 311 of the internal volume of single auxiliary tank 39.When so constituting, the cogging torque that produces owing to leading section 312 gap 38 to each other at utmost point tooth 311 equates with the cogging torque that forms at auxiliary tank 39, so can reduce the cogging torque of whole motor.
In addition, in the present embodiment, use dividing permanent-magnet body 420,, can reduce cost so compare with the situation of using one-piece type permanent magnet as permanent magnet 42.In addition, if dividing permanent-magnet body 420 then when magnet is magnetized, is not limited to magnetization radially, also can easily carry out incorgruous magnetization such as parallel magnetization.The waveform that thus, can easily make induced voltage is near sinusoidal wave.
And in the present embodiment, a plurality of dividing permanent-magnet bodies 420 do not stay state of contact configuration with gap to each other with circumferential adjacent dividing permanent-magnet body 420, therefore can be easily and carry out efficiently dividing permanent-magnet body 420 is configured in the operation when circumferential.In addition, because with dividing permanent-magnet body 420 state of contact configuration to each other, so can make the part of pole change certain.In addition,, then be set at certain intervals, also can make the part of pole change certain through interval with 420 of dividing permanent-magnet bodies if circumferentially adjacent dividing permanent-magnet body 420 is not direct contact to each other.
Moreover the relative outer peripheral face of front end face dividing permanent-magnet body 420 and utmost point tooth 311 313 constitutes with the arc surface of following curvature: make and the front end face 313 of utmost point tooth 311 between the size in the space that forms in circumferential central narrow, wide in circumferential both sides.At this, the front end face of utmost point tooth 311 313 and the space of permanent magnet 42 be narrow more then gathers magnetic force and induced voltage is bigger but cogging torque is also big more, but adopts this shape, then can not reduce to gather magnetic force and induced voltage ground reduces cogging torque.
Promptly; When the constant radius of the imaginary circle that is constituted when the front end face 313 with utmost point tooth 311 is 20mm; If the imaginary radius of a circle that outer peripheral face constituted (radius of rotor 4) of permanent magnet 42 is set at 15.9mm, the value of induced voltage emf [vp-p] and cogging torque T [mNmp-p] was following when then the curvature of dividing permanent-magnet body 420 changed as follows:
The curvature induced voltage cogging torque of dividing permanent-magnet body
14 132.2 0.905
13 130.9 0.672
12 129.3 0.480
11 127.3 0.315
10 124.6 0.183
9 120.9 0.100
8 115.8 0.063
But the radius r [mm] (radius of rotor 4) of the imaginary circle that outer peripheral face constituted that makes permanent magnet 42 for induced voltage emf [vp-p] is reduced then obtains following result when changing as follows:
The radius induced voltage cogging torque of rotor
15.9 115.8 0.063
16.0 121.4 0.092
16.1 127.3 0.139
16.2 131.5 0.209
Like this; If strengthen the imaginary radius of a circle that outer peripheral face constituted (radius of rotor 4) of permanent magnet 42; Then can suppress the reduction of induced voltage, but along with the increase of the imaginary radius of a circle that outer peripheral face constituted (radius of rotor 4) of permanent magnet 42, it is big that cogging torque also becomes.Therefore, through auxiliary tank 39 is set, can suppress the reduction of induced voltage, and can realize the reduction of cogging torque.
[other embodiment]
In the above-described embodiments; Adopted the formation that on the front end face 313 of utmost point tooth 311, respectively forms two auxiliary tanks 39; If but the internal diameter of segmentation iron core 310 more greatly then three auxiliary tanks 39 can respectively be set, if the internal diameter of segmentation iron core 310 is less an auxiliary tank 39 can be set respectively.
In addition; In the above-described embodiments, the circumferential openings width d1 in the gap 38 that forms between the leading section 312 of adjacent teeth 311 is 0.8mm, and radial depth size d2 is 0.5mm; But the circumferential openings width d1 in gap 38 for example can be set in 0.4～1.6mm; Radial depth size d2 for example can be set in 0.3～1.2mm, therefore, as long as the size of auxiliary tank 39 constitutes A/F or depth dimensions equates with gap 38 even preferably aperture area or internal volume equate.
In addition, in the above-described embodiments, dividing permanent-magnet body 420 has adopted not stay the state that is in contact with one another with gap to be fixed in the formation on the rotating shaft 41, but also can adopt dividing permanent-magnet body 420 is fixed in the formation on the rotating shaft 41 with the state that separates separately.
In addition, the foregoing description is rotor 4 to be configured in the motor 1 of the inner-rotor type of stator 3 inboards, but also can adopt rotor 4 to be configured in the formation of the outer rotor type motor 1 in stator 3 outsides.
Claims (9)
1. permanent-magnet type synchronization motor; Comprise stator and rotor; Said stator has: dispose the stator core of a plurality of utmost point teeth of giving prominence to radial direction and be wound on the coil on the said utmost point tooth across the form equal angles compartment of terrain of grooving with the centre, said rotor has permanent magnet, and this permanent magnet is circumferentially alternately disposing the S utmost point and the N utmost point across the relative side face upper edge of the front end face of voids and said utmost point tooth; It is characterized in that
Said stator core is made up of a plurality of segmentation iron cores with said utmost point tooth along circumferentially configuration,
On the front end face of said utmost point tooth, being formed with this front end face is the auxiliary tank that the center is cut apart along circumferential equal angles ground with the motor central axis,
Said a plurality of utmost point tooth has at the leading section of front to circumferential expansion,
The A/F in the gap that forms between the leading section of the adjacent teeth in said a plurality of utmost point tooth equates with the A/F of said auxiliary tank; And the depth dimensions in said gap equates with the depth dimensions of said auxiliary tank; And the aperture area that radially go up in said gap equates with the aperture area that said auxiliary tank is radially gone up.
2. permanent-magnet type synchronization motor as claimed in claim 1 is characterized in that, said permanent magnet
A plurality of dividing permanent-magnet bodies by along circumferentially configuration constitute.
3. permanent-magnet type synchronization motor as claimed in claim 2 is characterized in that, the state configuration that said a plurality of dividing permanent-magnet bodies separate with circumferential adjacent dividing permanent-magnet body to each other.
4. permanent-magnet type synchronization motor as claimed in claim 2 is characterized in that, said a plurality of dividing permanent-magnet bodies are with the state of contact configuration to each other of circumferentially adjacent dividing permanent-magnet body.
5. permanent-magnet type synchronization motor as claimed in claim 2; It is characterized in that the relative face of the front end face with said utmost point tooth of said a plurality of dividing permanent-magnet bodies constitutes with the arc surface of following curvature: the size that makes said space is in circumferential central narrow, wide in circumferential both sides.
6. permanent-magnet type synchronization motor as claimed in claim 1 is characterized in that, the internal volume in the gap that forms between the leading section of the adjacent teeth in said a plurality of utmost point teeth equates with the internal volume of said auxiliary tank.
7. permanent-magnet type synchronization motor as claimed in claim 1 is characterized in that said rotor configuration is in the inboard of said stator.
8. permanent-magnet type synchronization motor as claimed in claim 1 is characterized in that said rotor configuration is in the outside of said stator.
9. permanent-magnet type synchronization motor as claimed in claim 1 is characterized in that said auxiliary tank is formed with a plurality of on the front end face of said utmost point tooth.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006005707A JP4713348B2 (en) | 2006-01-13 | 2006-01-13 | Permanent magnet synchronous motor |
| JP2006-005707 | 2006-01-13 | ||
| JP2006005707 | 2006-01-13 |
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| Publication Number | Publication Date |
|---|---|
| CN101001038A CN101001038A (en) | 2007-07-18 |
| CN101001038B true CN101001038B (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200610168430XA Active CN101001038B (en) | 2006-01-13 | 2006-12-06 | Permanent magnet type synchronous motor |
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| JP (1) | JP4713348B2 (en) |
| CN (1) | CN101001038B (en) |
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| WO2014015727A1 (en) * | 2012-07-23 | 2014-01-30 | 广东肇庆爱龙威机电有限公司 | Permanent-magnet direct current motor with auxiliary slots for reducing cogging torque |
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| CN103872871B (en) * | 2012-12-14 | 2017-04-12 | 比亚迪股份有限公司 | Motor |
| CN103560634B (en) * | 2013-11-18 | 2015-11-18 | 上海特波电机有限公司 | Internal permanent magnet synchronous motor used for electric vehicle |
| CN103715783A (en) * | 2013-11-30 | 2014-04-09 | 浙江京马电机有限公司 | Multi-trench iron core structure |
| CN108351230B (en) * | 2015-11-18 | 2021-05-04 | 日本精机株式会社 | Eddy current type instrument |
| CN105978182A (en) * | 2016-06-21 | 2016-09-28 | 浙江众邦机电科技有限公司 | Rotor-stator structure of permanent magnet brushless DC motor |
| CN114072986B (en) * | 2019-06-25 | 2024-01-19 | 株式会社电装 | Motor with a motor housing having a motor housing with a motor housing |
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- 2006-01-13 JP JP2006005707A patent/JP4713348B2/en active Active
- 2006-12-06 CN CN200610168430XA patent/CN101001038B/en active Active
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| CN1063881C (en) * | 1996-05-24 | 2001-03-28 | 松下电器产业株式会社 | Motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2014015727A1 (en) * | 2012-07-23 | 2014-01-30 | 广东肇庆爱龙威机电有限公司 | Permanent-magnet direct current motor with auxiliary slots for reducing cogging torque |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101001038A (en) | 2007-07-18 |
| JP2007189830A (en) | 2007-07-26 |
| JP4713348B2 (en) | 2011-06-29 |
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