[go: up one dir, main page]

WO2024082577A1 - Moteur à aimants permanents, compresseur, et appareil de réfrigération - Google Patents

Moteur à aimants permanents, compresseur, et appareil de réfrigération Download PDF

Info

Publication number
WO2024082577A1
WO2024082577A1 PCT/CN2023/087144 CN2023087144W WO2024082577A1 WO 2024082577 A1 WO2024082577 A1 WO 2024082577A1 CN 2023087144 W CN2023087144 W CN 2023087144W WO 2024082577 A1 WO2024082577 A1 WO 2024082577A1
Authority
WO
WIPO (PCT)
Prior art keywords
stator
permanent magnet
stator winding
present application
motor
Prior art date
Application number
PCT/CN2023/087144
Other languages
English (en)
Chinese (zh)
Inventor
杨勤
盖蕊
郭谨博
姚俊
邱小华
Original Assignee
广东美芝制冷设备有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 广东美芝制冷设备有限公司 filed Critical 广东美芝制冷设备有限公司
Publication of WO2024082577A1 publication Critical patent/WO2024082577A1/fr

Links

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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2706—Inner rotors
    • H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • 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
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H02K3/18—Windings for 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

Definitions

  • the present application belongs to the technical field of compressors, and specifically relates to a permanent magnet motor, a compressor and a refrigeration device.
  • variable-frequency motors have become the mainstream technology.
  • the permanent magnets of variable-frequency motors are mostly NdFeB permanent magnets containing heavy rare earth elements and high coercivity.
  • NdFeB permanent magnets are permanent magnet materials based on the intermetallic compound Nd2Fe14B, and the main components are neodymium, iron and boron.
  • other rare earth metals such as dysprosium and praseodymium can be used to replace part of the neodymium in the permanent magnet.
  • the consumption of heavy rare earth elements especially dysprosium and terbium
  • new technologies need to be developed.
  • cerium Compared with praseodymium and neodymium, cerium has obvious cost advantages. However, compared with the same praseodymium and neodymium, the remanence Br and intrinsic coercivity Hcj of the corresponding rare earth magnet will be reduced, which directly affects the motor performance and demagnetization reliability. Therefore, a new design of the motor structure is needed to meet the requirements of motor cost, motor efficiency and demagnetization reliability.
  • the present application aims to at least partially solve one of the above technical problems existing in the prior art. To this end, the present application provides a permanent magnet motor, a compressor containing the permanent magnet motor and a refrigeration device containing the compressor.
  • a first aspect of the present application provides a permanent magnet motor, comprising:
  • a motor rotor comprising a rotor core and a plurality of permanent magnets arranged on the rotor core, wherein the permanent magnets contain cerium;
  • the motor stator comprises a stator core arranged around the outer side of the rotor core, wherein the stator core is provided with a plurality of stator teeth along the inner circumference direction;
  • a stator winding is wound on each of the stator teeth, the number of turns of the stator winding on each of the stator teeth is N, and the number of branches connected in parallel per phase of the stator winding is a;
  • the permanent magnet contains x% cerium by mass
  • N/a satisfies: N/a ⁇ 5.2(25-x);
  • connection form of the stator winding on the stator teeth is a triangle connection
  • N/a satisfies: N/a ⁇ 5.2(25-x) ⁇ sqrt(3).
  • connection form of the stator winding on the stator teeth is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth satisfies: 50 ⁇ N ⁇ 90.
  • connection form of the stator winding on the stator teeth is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth satisfies: 50 ⁇ N ⁇ 80.
  • connection form of the stator winding on the stator teeth is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth is 80.
  • connection form of the stator winding on the stator teeth is a triangle connection
  • number of turns N of the stator winding on each stator tooth satisfies: 80 ⁇ N ⁇ 170.
  • the number a of branches connected in parallel per phase satisfies: 1 ⁇ a ⁇ 4.
  • stator slots are formed between adjacent stator teeth.
  • the number of the stator slots is 12.
  • the wire diameter of the stator winding is d, 0.45mm ⁇ d ⁇ 0.9mm.
  • the wire diameter of 0.45mm to 0.9mm is the optimal stator winding wire diameter.
  • the permanent magnet contains x% by mass of cerium, and the x% satisfies: 3% ⁇ x% ⁇ 10%.
  • the permanent magnet contains dysprosium element, and the dysprosium element content is less than 3wt%.
  • the permanent magnet contains dysprosium element, and the dysprosium element content is less than 2.3wt%.
  • the permanent magnet contains dysprosium element, and the content of dysprosium element is about 2.25wt%.
  • the permanent magnet contains praseodymium and neodymium elements, and the sum of the praseodymium and neodymium elements is 20wt% ⁇ 32wt%.
  • the permanent magnet contains praseodymium and neodymium elements, and the sum of the praseodymium and neodymium elements is 25wt% ⁇ 32wt%.
  • the permanent magnet contains praseodymium and neodymium elements, and the sum of the praseodymium and neodymium elements is about 25wt%.
  • the permanent magnet contains cobalt element, and the content of the cobalt element is 1wt% ⁇ 2wt%.
  • a plurality of slots are provided on the end surface of the rotor core along the circumferential direction of the rotor core, and each of the permanent magnets is correspondingly embedded in each of the slots.
  • the slot is V-shaped.
  • the V-shaped opening faces the motor stator.
  • stator windings distributed on different stator teeth are actually connected in series.
  • series windings used on motors with relatively thicker wire diameters can achieve higher back electromotive force and improve the efficiency of medium and low frequency motors.
  • stator windings distributed on different stator teeth are actually connected in parallel.
  • a second aspect of the present application provides a compressor, which includes the permanent magnet motor.
  • a third aspect of the present application provides a refrigeration device, which includes the compressor.
  • the refrigeration equipment is an air conditioner.
  • FIG1 is a schematic diagram of the structure of a permanent magnet motor of the present application.
  • FIG2 is a comparison diagram of the motor efficiency of the present application solution and the comparative solution.
  • FIG3 is a comparison diagram of the demagnetization current resistance of the solution of the present application and the comparative solution.
  • 100 motor rotor; 110: permanent magnet; 120: slot;
  • 200 motor stator
  • 210 stator teeth.
  • the present application provides a permanent magnet motor, which includes a motor rotor 100 , a motor stator 200 , and a stator winding (not shown). Specifically, wherein:
  • the motor rotor 100 includes a rotor core and a plurality of permanent magnets 110 disposed on the rotor core, wherein the permanent magnets 110 contain cerium elements;
  • the motor stator 200 includes a stator core, which is disposed around the outer side of the rotor core.
  • the stator core is provided with a plurality of stator teeth 210 along the inner circumference.
  • the stator winding is provided on each stator tooth 210 , the number of turns of the stator winding on each stator tooth 210 is N, and the number of branches connected in parallel per phase of the stator winding is a;
  • the permanent magnet 110 contains x% of cerium by mass
  • N/a satisfies: N/a ⁇ 5.2(25-x);
  • N/a satisfies: N/a ⁇ 5.2(25-x) ⁇ sqrt(3).
  • the compressor is one of the core components of the air conditioner, and a permanent magnet motor is usually provided in the compressor.
  • a permanent magnet motor is usually provided in the compressor.
  • the intrinsic coercive force of the neodymium iron boron permanent magnets used by the inverter models of general compressor manufacturers at 20°C is ⁇ 1830kA/m.
  • the permanent magnets under this coercive force all contain a large proportion of praseodymium, neodymium and heavy rare earth elements, especially dysprosium and terbium.
  • the permanent magnet motor of the present application includes a motor rotor 100, a motor stator 200 and a stator winding.
  • the motor rotor 100 includes a rotor core and a plurality of permanent magnets 110 disposed on the rotor core, wherein the permanent magnets 110 contain cerium;
  • the motor stator 200 includes a stator core, which is disposed around the outer side of the rotor core, and the stator core is provided with a plurality of stator teeth 210 along the inner circumference; a stator winding is disposed on each stator tooth 210, and the number of turns of the stator winding on each stator tooth 210 is N, and the number of branches connected in parallel per phase of the stator winding is a;
  • the permanent magnet contains cerium element, thereby reducing the use of praseodymium, neodymium and heavy rare earth elements, and effectively controlling the cost. Since the addition of cerium element will cause the magnet remanence B r to decrease, in order to ensure that the efficiency of the permanent magnet motor can meet the demand under the condition of equivalent cost, the cerium element ratio x, the number of stator winding turns N and the number of parallel branches per phase a are matched.
  • connection form of the stator winding is a Y-shaped connection, when N and a meet the N/a ⁇ 5.2(25-x) defined in the present application, the magnetic properties of the magnet meet the motor efficiency requirements, the efficiency of the motor can reach the best, the motor cost is the lowest, and the demagnetization resistance is improved most significantly;
  • connection form of the stator winding is a triangle connection, when N and a meet the N/a ⁇ 5.2(25-x) ⁇ sqrt(3) defined in the present application, the magnetic properties of the magnet meet the motor efficiency requirements, the efficiency of the motor can reach the best, the motor cost is the lowest, and the demagnetization resistance is improved most significantly.
  • the stator winding is divided into concentrated winding and distributed winding.
  • Concentrated winding refers to the winding in which the coil is wound on one stator tooth.
  • Distributed winding refers to the winding in which the coil is wound on multiple stator teeth.
  • the span of the concentrated winding is 1, such as stator slot number 1 to stator slot number 2; while the span of the distributed winding is not 1, for example, the span is 3, and the winding is from stator slot number 1 to stator slot number 4.
  • the end height of the concentrated winding is small and the cost is low; the end height of the distributed winding is relatively larger and the cost is higher, but the motor operation noise is smaller.
  • number of branches connected in parallel refers to the circuit formed by the lead heads of multiple pole phase groups in each phase in the stator winding being directly connected to the power supply.
  • connection form of the stator winding on the stator tooth 210 is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth 210 satisfies: 50 ⁇ N ⁇ 90.
  • connection form of the stator winding on the stator tooth 210 is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth 210 satisfies: 50 ⁇ N ⁇ 80.
  • connection form of the stator winding on the stator tooth 210 is a Y-shaped connection
  • number of turns N of the stator winding on each stator tooth 210 is 80.
  • connection form of the stator winding on the stator tooth 210 is a triangle connection
  • number of turns N of the stator winding on each stator tooth 210 satisfies: 80 ⁇ N ⁇ 170.
  • the number a of branches connected in parallel per phase satisfies: 1 ⁇ a ⁇ 4.
  • stator slots are formed between adjacent stator teeth 210 .
  • the number of stator slots is 12.
  • stator slots is 12, and the corresponding number of stator teeth is also 12, which can effectively reduce the number of winding turns in series on each stator tooth, thereby effectively reducing the demagnetization reverse magnetic field strength generated by the stator winding being energized, so that the demagnetization reverse magnetic field is not sufficient to demagnetize the permanent magnet, thereby improving the overall anti-demagnetization ability of the motor.
  • the demagnetization potential F Nc ⁇ I.
  • I is the demagnetization current, which is constant.
  • the number of turns N is the number of series turns per phase
  • Nc is the number of turns on each tooth.
  • the motor is designed as a three-phase motor. When the number of stator slots is 9, the number of slots per phase is 3. When the number of stator slots is 12, the number of slots per phase is 4.
  • the number of series turns N remains unchanged, and the number of turns per tooth is N/3 and N/4 respectively. The more slots there are, the lower Nc is, and the lower the demagnetization potential is. Therefore, thinner magnets can be used or the coercive force H cj of the magnet can be reduced.
  • the wire diameter of the stator winding is d, 0.45 mm ⁇ d ⁇ 0.9 mm.
  • the wire diameter of 0.45mm to 0.9mm is the optimal stator winding wire diameter.
  • the mass percentage x% of the cerium element in the permanent magnet 110 satisfies: 3% ⁇ x% ⁇ 10%.
  • the protection range of 3% to 10% for the cerium content x% in this application is a suitable range, within which the optimal motor efficiency and demagnetization resistance can be achieved.
  • the permanent magnet 110 contains dysprosium, and the content of dysprosium is less than 3 wt %.
  • the permanent magnet 110 contains dysprosium, and the content of dysprosium is less than 2.3 wt %.
  • the permanent magnet 110 contains dysprosium, and the content of dysprosium is about 2.25 wt %.
  • the sum of the content of praseodymium and neodymium elements is 20 wt % to 32 wt %.
  • the sum of the content of praseodymium and neodymium elements is 25 wt % to 32 wt %.
  • the sum of the content of praseodymium and neodymium elements is 25 wt %.
  • the permanent magnet 110 contains cobalt element, and the content of cobalt element is 1wt% ⁇ 2wt%.
  • a plurality of slots 120 are provided on the end surface of the rotor core along the circumferential direction of the rotor core, and each permanent magnet 110 is correspondingly embedded in each slot 120 .
  • the slot 120 is V-shaped.
  • the V-shaped opening faces the motor stator 200 .
  • the slot 120 is V-shaped, which can enhance the anti-demagnetization ability of the motor and make the demagnetization ability of the motor not lower than that of the existing conventional rare earth magnet.
  • stator windings distributed on different stator teeth 210 are connected in series or in parallel.
  • stator windings distributed on different stator teeth are actually connected in series.
  • stator windings distributed on different stator teeth are actually connected in parallel.
  • the scheme of the present application refers to the case where the connection form of the stator winding of the permanent magnet motor is a Y-shaped connection.
  • x% 7.0%
  • N 80
  • the motor efficiency is 93.2%
  • the demagnetization current is 22A at the same demagnetization rate.
  • the comparison scheme refers to the case where the connection form of the stator winding of the permanent magnet motor is a Y-shaped connection.
  • x% 7.0%
  • N 100
  • the motor efficiency is 92.8%
  • the demagnetization current at the same demagnetization rate is 18A.
  • the content of praseodymium and neodymium in the permanent magnet motor is 25wt%
  • the content of cerium is 7wt%
  • the content of dysprosium is 2.25wt%
  • the content of cobalt is 1.5wt%
  • the remaining element is iron.
  • the permanent magnet can be directly purchased from the market.
  • Table 1 shows the case of a Y-shaped connection. If it is a triangle connection, the number of turns of the triangle winding can be equivalent to the number of turns of the star winding/sqrt(3).
  • the value range of the number of turns N of the stator winding is different in the Y-shaped connection and the triangle connection. Specifically, when the connection form of the stator winding on the stator teeth is a Y-shaped connection, the number of turns N of the stator winding on each stator tooth satisfies: 50 ⁇ N ⁇ 90. When the connection form of the stator winding on the stator teeth is a triangle connection, the number of turns N of the stator winding on each stator tooth satisfies: 80 ⁇ N ⁇ 170.
  • a compressor which includes a permanent magnet motor.
  • the compressor of the present application contains the permanent magnet motor of the present application, which includes a motor rotor 100, a motor stator 200 and a stator winding.
  • the motor rotor 100 includes a rotor core and a plurality of permanent magnets 110 arranged on the rotor core, and the permanent magnets 110 contain cerium elements;
  • the motor stator 200 includes a stator core, which is arranged around the outer side of the rotor core, and the stator core is provided with a plurality of stator teeth 210 along the inner circumference; the stator winding is arranged on each stator tooth 210, and the number of turns of the stator winding on each stator tooth 210 is N, and the number of branches connected in parallel per phase of the stator winding is a;
  • the permanent magnet 110 contains x% of cerium by mass
  • N/a satisfies: N/a ⁇ 5.2(25-x);
  • N/a satisfies: N/a ⁇ 5.2(25-x) ⁇ sqrt(3).
  • the permanent magnet 110 contains cerium, thereby reducing the use of praseodymium, neodymium and heavy rare earth elements, and effectively controlling the cost. Since the addition of cerium will cause the remanence of the magnet Br to decrease, in order to ensure that the efficiency of the permanent magnet motor can meet the demand under the condition of equivalent cost, a matching design is carried out for the number of turns N of the stator winding and the number a of branches connected in parallel per phase.
  • connection form of the stator winding is a Y-shaped connection, when N and a meet the N/a ⁇ 5.2(25-x) specified in the present application, the magnetic properties of the magnet meet the motor efficiency requirements, the motor efficiency can be optimized, the motor cost is the lowest, and the demagnetization resistance is improved most significantly;
  • connection form of the stator winding is a triangle connection, when N and a meet the N/a ⁇ 5.2(25-x) ⁇ sqrt(3) specified in the present application, the magnetic properties of the magnet meet the motor efficiency requirements, the motor efficiency can be optimized, the motor cost is the lowest, and the demagnetization resistance is improved most significantly.
  • the efficiency of the compressor can be optimized, the motor cost can be minimized, and the demagnetization resistance can be improved most significantly.
  • a refrigeration device in some other embodiments of the present application, includes a compressor.
  • the refrigeration equipment of the present application because the compressor of the present application is used, has all the effects and advantages of the above-mentioned permanent magnet motor and compressor.
  • the refrigeration equipment of the present application because the compressor of the present application is used, has all the effects and advantages of the above-mentioned permanent magnet motor and compressor.
  • the refrigeration equipment of the present application contains the compressor of the present application
  • the compressor contains the permanent magnet motor of the present application
  • the permanent magnet motor includes a motor rotor, a motor stator and a stator winding.
  • the motor rotor includes a rotor core and a plurality of permanent magnets arranged on the rotor core, and the permanent magnets contain cerium elements
  • the motor stator includes a stator core, and the stator core is arranged around the outer side of the rotor core, and the stator core is provided with a plurality of stator teeth along the inner circumference
  • the stator winding is arranged on each stator tooth, and the number of turns of the stator winding on each stator tooth is N, and the number of branches connected in parallel per phase of the stator winding is a;
  • the permanent magnet contains x% of cerium by mass
  • N/a satisfies: N/a ⁇ 5.2(25-x);
  • N/a satisfies: N/a ⁇ 5.2(25-x) ⁇ sqrt(3).
  • the permanent magnet motor used in the compressor contains cerium element in the permanent magnet, thereby reducing the use of praseodymium, neodymium and heavy rare earth elements, and effectively controlling the cost. Since the addition of cerium element will cause the remanence of the magnet B r to decrease, in order to ensure that the efficiency of the permanent magnet motor can meet the demand under the condition of equivalent cost, the present application is designed to match the number of stator winding turns N and the number of branches in parallel per phase according to the cerium element content.
  • connection form of the stator winding is a Y-shaped connection, when N and a meet the N/a ⁇ 5.2(25-x) defined in the present application, the magnetic properties of the magnet meet the motor efficiency use requirements, the motor efficiency can reach the optimal, the motor cost is the lowest, and the demagnetization resistance is improved most significantly;
  • connection form of the stator winding is a triangle connection, when N and a meet the N/a ⁇ 5.2(25-x) ⁇ sqrt(3) defined in the present application, the magnetic properties of the magnet meet the motor efficiency use requirements, the motor efficiency can reach the optimal, the motor cost is the lowest, and the demagnetization resistance is improved most significantly.
  • the efficiency of the compressor can be optimized, the motor cost can be minimized, and the demagnetization resistance can be improved significantly.
  • the performance of the refrigeration equipment is also improved.
  • the refrigeration device is an air conditioner.
  • the refrigeration device is an air conditioner.
  • the air conditioner is a household air conditioner.
  • cerium-containing permanent magnets involved in the technical solution of this application are all products already available on the market.
  • This application is based on the content of cerium in the cerium-containing permanent magnet, and through the structural design of the number of turns N of the stator winding and the number of branches a in parallel per phase of the stator winding, ultimately improving the performance of permanent magnet motors, compressors and refrigeration equipment.
  • the technical solution of this application does not involve improvements in the content of cerium and other elements in permanent magnets.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as “first” or “second” may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of “plurality” is two or more, unless otherwise clearly and specifically defined.
  • the terms “installed”, “connected”, “connected”, “fixed” and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.
  • installed can be a fixed connection, a detachable connection, or an integral connection
  • it can be a mechanical connection, an electrical connection, or a communication
  • it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention concerne un moteur à aimants permanents, un compresseur et un appareil de réfrigération. Le moteur à aimants permanents comprend un rotor de moteur (100), un stator de moteur (200) et un enroulement de stator. Le rotor de moteur (100) comprend un noyau de rotor et une pluralité d'aimants permanents (110) disposés sur le noyau de rotor, et les aimants permanents (110) contiennent x% d'élément de cérium en masse. Le stator de moteur (200) comprend un noyau de stator entourant le côté externe du noyau de rotor, et le noyau de stator est pourvu d'une pluralité de dents de stator (210) dans une direction circonférentielle interne. L'enroulement de stator est enroulé autour de chaque dent de stator (210), le nombre de spires de l'enroulement de stator sur chaque dent de stator (210) est N, et le nombre de branches connectées en parallèle dans chaque phase de l'enroulement de stator est a. Lorsque la forme de connexion de l'enroulement de stator sur les dents de stator (210) est une connexion en forme de Y, N/a satisfait N/a ≤ 5,2 (25-x) ; et lorsque la forme de connexion de l'enroulement de stator sur les dents de stator (210) est une connexion triangulaire, N/a satisfait N/a ≤ 5,2 (25-x) × sqrt (3).
PCT/CN2023/087144 2022-10-21 2023-04-07 Moteur à aimants permanents, compresseur, et appareil de réfrigération WO2024082577A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211296295.2 2022-10-21
CN202211296295.2A CN117955273A (zh) 2022-10-21 2022-10-21 永磁电机、压缩机和制冷设备

Publications (1)

Publication Number Publication Date
WO2024082577A1 true WO2024082577A1 (fr) 2024-04-25

Family

ID=90736794

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/087144 WO2024082577A1 (fr) 2022-10-21 2023-04-07 Moteur à aimants permanents, compresseur, et appareil de réfrigération

Country Status (2)

Country Link
CN (1) CN117955273A (fr)
WO (1) WO2024082577A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2506683A (en) * 2012-10-08 2014-04-09 Vacuumschmelze Gmbh & Co Kg Anisotropic soft magnetic article and method for its production
CN108418486A (zh) * 2018-05-14 2018-08-17 滨州学院 一种高强度永磁材料制成的永磁控制电机
JP2019161945A (ja) * 2018-03-15 2019-09-19 株式会社東芝 回転子、回転電機、及び車両
CN111555478A (zh) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 电机、压缩机和制冷设备
CN111555480A (zh) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 电机、压缩机和制冷设备
CN114285200A (zh) * 2021-12-31 2022-04-05 淮安威灵电机制造有限公司 电机的转子和电机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2506683A (en) * 2012-10-08 2014-04-09 Vacuumschmelze Gmbh & Co Kg Anisotropic soft magnetic article and method for its production
JP2019161945A (ja) * 2018-03-15 2019-09-19 株式会社東芝 回転子、回転電機、及び車両
CN108418486A (zh) * 2018-05-14 2018-08-17 滨州学院 一种高强度永磁材料制成的永磁控制电机
CN111555478A (zh) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 电机、压缩机和制冷设备
CN111555480A (zh) * 2020-05-26 2020-08-18 安徽美芝精密制造有限公司 电机、压缩机和制冷设备
CN114285200A (zh) * 2021-12-31 2022-04-05 淮安威灵电机制造有限公司 电机的转子和电机

Also Published As

Publication number Publication date
CN117955273A (zh) 2024-04-30

Similar Documents

Publication Publication Date Title
JP5251219B2 (ja) 永久磁石式回転機用回転子
JP5440079B2 (ja) アキシャルギャップ型永久磁石式回転機用回転子及びアキシャルギャップ型永久磁石式回転機
US8987965B2 (en) Rotor and permanent magnet rotating machine
KR101672055B1 (ko) 영구자석식 회전기용 회전자
US9742248B2 (en) Method for assembling rotor for use in IPM rotary machine
WO2010064578A1 (fr) Aimant fritté à base de nd et son procédé de fabrication
CN101908808A (zh) 永久磁铁式旋转机
US9583999B2 (en) Permanent magnet rotating machine
JP2013106494A (ja) 回転子及び永久磁石式回転機
US12283854B2 (en) Motor, compressor and refrigeration device
EP3761483A1 (fr) Moteur, compresseur et dispositif de réfrigération
CN209709789U (zh) 转子、电机、压缩机及空调器、车辆
WO2024082577A1 (fr) Moteur à aimants permanents, compresseur, et appareil de réfrigération
JP2014087143A (ja) 永久磁石同期電動機
JP2003274591A (ja) 集中巻式ｄｃモータ及びそれを搭載したコンプレッサ
CN220586043U (zh) 永磁电机、压缩机和制冷设备
CN109417320A (zh) 转子、电动机、送风机、压缩机以及空气调节装置
CN206820567U (zh) 一种汽车发电机转子总成
WO2024083076A1 (fr) Moteur à aimant permanent, compresseur et dispositif de réfrigération
WO2024083155A1 (fr) Moteur, compresseur et dispositif de réfrigération
JP2005033843A (ja) Ｄｃブラシモータ装置及びその永久磁石
CN220628977U (zh) 电机、压缩机与制冷设备
CN220586045U (zh) 电机、压缩机和制冷设备
WO2024082799A1 (fr) Moteur, compresseur et dispositif de réfrigération
Han et al. Comparative Analysis of Axial and Radial Flux Motors with Identical Size and Output Power

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23878577

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE