WO2018192146A1 - 双余度定子及双余度电机 - Google Patents
双余度定子及双余度电机 Download PDFInfo
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- WO2018192146A1 WO2018192146A1 PCT/CN2017/097377 CN2017097377W WO2018192146A1 WO 2018192146 A1 WO2018192146 A1 WO 2018192146A1 CN 2017097377 W CN2017097377 W CN 2017097377W WO 2018192146 A1 WO2018192146 A1 WO 2018192146A1
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- WIPO (PCT)
- Prior art keywords
- windings
- teeth
- coils
- stator
- phase coil
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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
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K3/28—Layout of windings or of connections between windings
Definitions
- the present invention relates to the field of electrical machines, and more particularly to a dual redundancy stator and a dual redundancy motor.
- Chinese Patent No. 102,035,271 A discloses a dual redundant winding motor employing a concentrated winding structure in which two sets of winding coils share the same slot.
- the Chinese patent application with the nickname 104617687 A discloses a two-winding motor stator employing a two-layer concentrated winding structure, the stator having two sets of windings on the same inner and outer teeth.
- the Chinese patent application with the nickname 103269137 A discloses a two-winding motor structure that also employs a two-layer concentrated winding structure, the two sets of windings being also located in one of the slots.
- the technical problem to be solved by the present invention is that the two sets of windings of the above-mentioned double redundant motor are located in the same slot, and there is thermal coupling, and the mutual inductance between the two windings is large, the magnetic circuits are coupled with each other, and the decoupling control algorithm is difficult. Larger problems, providing a new dual-duplex stator and dual-reverb motor.
- the technical solution of the present invention is to provide a dual-duty stator including a stator core, the inner circumference of the stator core having 6k first teeth uniformly distributed in the circumferential direction, k is a positive integer, and each of the first teeth is wound around a coil; a first set of windings composed of 3k coils on 3k first teeth is connected to the first power supply unit, and another 3k first teeth are a second set of windings formed by the upper 3k coils is connected to the second power supply unit, and the first set of windings and the second set of windings are alternately distributed on the 6k first teeth; the stator core
- the inner circumference also has 6k second teeth, and the 6k second teeth and the 6k first teeth are alternately distributed in the circumferential direction to physically isolate the two coils on the adjacent first teeth.
- the coils of the same phase in the first set of windings and the second set of windings are separated by six slots.
- the first set of windings includes a first U-phase coil, a first V-phase coil, a first W-phase coil, and the first U-phase coil, a V-phase coil and a first W-phase coil are respectively separated by 4 slots;
- the second sleeve winding includes a second U-phase coil, a second V-phase coil, a second W-phase coil, and the second U-phase coil The second V-phase coil and the second W-phase coil are separated by four slots.
- each of the first sets of windings has the same number of turns; the number of turns of each of the second set of windings is the same.
- the ratio of the width of the second tooth to the width of the first tooth is 0.2-1
- the present invention also provides a dual redundancy motor including a rotor, two inverters, and a dual redundancy stator according to any one of the above, the two inverters being respectively connected to the first power supply unit and The second power supply unit.
- the number of poles of the rotor is 10k
- the number of slots of the double-duty stator is 12k
- the windings of the coils of the second winding are The coils of the first set of windings are wound in opposite directions
- the number of poles of the rotor is 8k
- the number of slots of the double-duplex stator is 12k
- the windings of the coils of the second winding are The coils of the respective phases of the first set of windings are wound in the same direction.
- the dual redundancy motor further includes a switching unit, the switching unit is respectively connected to two inverters, and is used for switching the working states of the two inverters. .
- the rotor is a surface mount rotor, a built-in radial rotor, and an inner A tangential rotor, a multi-layer magnetic steel rotor, a hybrid magnetic circuit rotor or a Halbach array rotor.
- two adjacent coils can be realized by adding a second tooth not wound around the coil between adjacent first teeth on the stator core.
- Physical thermal isolation eliminates the insulation of adjacent coils.
- the present invention realizes the complete magnetic circuit decoupling between the two sets of windings by rationally arranging the two sets of windings, and can perform the same decoupling control on the two sets of windings.
- FIG. 1 is a schematic view of an embodiment of a dual redundancy stator of the present invention
- FIG. 2 is a schematic view showing the wiring of the first set of windings and the second set of windings in the double redundant stator of the present invention
- FIG. 3 is a schematic diagram of an embodiment of a dual redundancy motor of the present invention.
- FIG. 1 is a schematic diagram of a dual-duty stator embodiment of the present invention
- the dual-duty stator in the embodiment of the present invention adopts a 24-slot concentrated winding structure, and has two sets of three-phase symmetric windings.
- the dual redundancy stator can be used in motors with high reliability.
- the double-duty stator of the present embodiment includes a stator core 10 having an inner circumference having twelve first teeth 11 and twelve second teeth 12 alternately distributed, and the twelve first teeth 11 are in the stator iron The inner circumference of the core is evenly distributed in the circumferential direction.
- the stator core 10 is formed by stacking silicon steel sheets, and may be of a one-piece structure, a spliced structure or a yoke-separated structure, or other achievable modes, which are not limited herein.
- the first tooth 11 and the second tooth 12 are integrally formed with the yoke portion (i.e., the annular portion) of the stator core 10 to constitute the entire stator core 10.
- the ratio of the width of the second tooth 12 (ie, the dimension in the circumferential direction) to the width of the first tooth 11 (ie, the dimension in the circumferential direction) may be 0.2 to 1, by which the first tooth 11 and the first tooth 11 can be secured.
- the magnetic flux density of the second tooth 12 is substantially the same, At the same time, the width of the tooth gap between the first tooth 11 and the second tooth 12 is increased to increase the power density.
- Each of the 12 first teeth 11 is wound around a coil, and the second tooth 12 is not wound around the coil, that is, the entire stator core 10 has 12 coils Ul-1, Ul-2, Vl-1, Vl-2, Wl-1, Wl-2, U2-1, U2-2, V2-l, V2-2, W2-l, W2-2. Since the first teeth 11 around which the coils are disposed are separated from the second teeth 12 that are not wound around the coils, the second teeth 12 can serve as partial magnetic circuits and fault-tolerant teeth, and can be paired with two adjacent first teeth 11 The coils are physically isolated for greater reliability, while saving the insulation of the motor system.
- 12 coils Ul-1, Ul-2, Vl-1, Vl-2, Wl-1, Wl-2, U2-l, U2-2, V2-l, V2-2, W2-l, W2-2 is divided into two sets of armature windings (coil spacing distribution in two sets of armature windings), wherein: the first set of windings includes two first U-phase coils Ul-1, Ul-2, two first V Phase coils Vl-1, V1-2 and two first W-phase coils W1-1, W1-2, and six of the first set of windings Ul-1, Ul-2, Vl-1, Vl-2 , Wl-1, Wl-2 are connected to the first power supply unit (as shown in FIG.
- the second set of windings comprises two second U-phase coils U2-l, U2-2, two second V-phase coils V2-l, V2-2, two second W-phase coils W2-l, W2-2, and six coils U2-l, U2-2, V2-l, V2-2 in the second set of windings W2-l and W2-2 are connected to the second power supply unit (as shown in Fig.
- the first set of windings and the second set of windings are respectively powered by the first power supply unit and the second power supply unit that are independent of each other (the first power supply unit and the second power supply unit are respectively connected to different inverters, and the first power supply unit and the first power supply unit
- the power supply voltage of the two power supply units can be the same or different), so when the first set of windings fails or even burns, the second set of windings can be cut into operation immediately, achieving double redundancy fault tolerance. Due to the physical isolation between the two sets of windings, the electrical, magnetic and thermal triple decoupling can be realized with high reliability.
- each of the coils Ul-1, Ul-2, Vl-1, Vl-2, Wl-1, Wl-2 in the first set of windings has the same number of turns
- each coil in the second set of windings U2-l, U2-2, V2-l, V2-2, W2-l, W2-2 have the same number of turns
- V2-l, V2-2, W2-l, W2-2 may be the same or different.
- the turns ratio of each winding of the two sets of windings may be determined according to the power distribution relationship of the two sets of windings.
- the coils of the same phase in the first set of windings and the second set of windings may be spaced by six slots.
- the coil U1-1 in the first set of windings is spaced apart from the first tooth 11 in which the coil U2-1 in the second set of windings is located, the first set of windings
- the coil U1-2 is spaced 90° from the first tooth 11 where the coil U2-2 in the second set of windings is located, the coil W1-1 in the first set of windings and the coil W2-1 in the second set of windings are located
- the first teeth 11 are spaced 90° apart.
- the two coils of the same phase in the first set of windings and the second set of windings may be connected in parallel or in series according to power requirements, applications, etc. (as shown in FIG. 2, Two coils of the same phase of one winding are connected in series, two coils of the same phase of the second winding are connected in parallel, and the two coils are spaced apart by 180°.
- two of the first U-phase coils Ul-1, U1-2 of the first set of windings are respectively located on the two first teeth 11 spaced apart by 180[deg.]; the two first V-phase coils Vl-1, V1-2 are respectively Located on two first teeth 11 spaced 180° apart; the two first W-phase coils W1-1, W1-2 are respectively located on the two first teeth 11 spaced 180[deg.] apart.
- a Y-shaped topology connection or a triangular topology connection may be adopted between the phase windings.
- the U1 phase coil, the VI phase coil and the W1 phase coil of the first winding are respectively separated by 4 slots, and the U2 phase coil, the V2 phase coil and the W2 phase coil of the second winding are respectively separated by 4 slots.
- the first U-phase coils Ul-1, Ul-2, the first V-phase coils Vl-1, Vl-2, and the first W-phase coils W1-1, W1-2 are located at intervals 120, respectively.
- the second U-phase coil U2-l, U2-2, the second V-phase coil V2-l, V2-2, the second W-phase coil W2 -l, W2-2 are respectively located on the first tooth 11 at intervals of 120°.
- each phase of each set of windings may be one coil or more than two.
- the coil as long as the number of the first teeth 11 and the second teeth 12 on the stator core 10 and the distribution of the coils on the first teeth 11 are adjusted.
- the inner circumference of the stator core has 6k first teeth uniformly distributed in the circumferential direction and 6k second teeth (k is a positive integer), and 6k first teeth and 6k second teeth are alternately distributed in the circumferential direction; a coil is wound around each of the first teeth, and a first set of windings composed of 3k coils of 3k first teeth are connected to
- the first power supply unit is connected to the second power supply unit by a second set of windings of 3k coils on the other 3k first teeth, and the first set of windings and the second set of windings are alternately arranged on the first teeth.
- the present invention further provides a dual redundancy motor including a rotor 20, two inverters, and the above-described dual redundancy stator 10, wherein the two inverters respectively
- the first power supply unit and the second power supply unit are connected to each other to independently supply power to the first set of windings and the second set of windings on the dual-duty stator 10, respectively, to achieve double redundancy fault tolerance.
- the 10k/12k structure is adopted (that is, the number of poles of the rotor 20 is 10k, and the number of slots of the double-retenterator 10 is 12k), and the coils of the second winding are wound and first.
- the coils of each phase of the winding are wound in opposite directions.
- the 8k/12k structure is adopted (that is, the number of poles of the rotor 20 is 8k, and the number of slots of the double-retenterator 10 is 12k), and the windings of the coils of the second winding are wound with the first winding.
- the coils of each phase are wound in the same direction.
- the double redundant motor may further include a switching unit that is respectively connected to the two inverters and used to switch the operating states of the two inverters. For example, when the first set of windings fails or even burns, the switching unit stops the output of the inverter connected to the first power supply unit and causes the inverter connected to the second power supply unit to output a driving signal to the second set of windings, so that the second set The windings are immediately cut into operation.
- a switching unit that is respectively connected to the two inverters and used to switch the operating states of the two inverters. For example, when the first set of windings fails or even burns, the switching unit stops the output of the inverter connected to the first power supply unit and causes the inverter connected to the second power supply unit to output a driving signal to the second set of windings, so that the second set The windings are immediately cut into operation.
- the rotor 20 can adopt various magnetic circuit structures, for example, the rotor can be a surface mount rotor, a built-in radial rotor (I type), and a built-in tangential rotor (Spoke type). , multi-layer magnetic steel rotor, hybrid magnetic circuit rotor ("V", "V+ ⁇ , etc.) or Halbach array rotor.
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Applications Claiming Priority (2)
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CN201710254078.XA CN107070016A (zh) | 2017-04-18 | 2017-04-18 | 双余度定子及双余度电机 |
CN201710254078X | 2017-04-18 |
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PCT/CN2017/097377 WO2018192146A1 (zh) | 2017-04-18 | 2017-08-14 | 双余度定子及双余度电机 |
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WO (1) | WO2018192146A1 (zh) |
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JP6922604B2 (ja) * | 2017-09-26 | 2021-08-18 | 日本電産株式会社 | モータ |
CN107733106B (zh) * | 2017-10-27 | 2020-04-07 | 大连海事大学 | 一种集成电机推进器用永磁容错轮缘推进电机 |
JP2019187047A (ja) * | 2018-04-06 | 2019-10-24 | マブチモーター株式会社 | モータ |
CN110017250B (zh) * | 2019-03-29 | 2020-12-08 | 华中科技大学 | 一种变速恒频风力发电系统 |
CN112436641B (zh) | 2019-08-26 | 2021-11-16 | 安徽美芝精密制造有限公司 | 定子组件、电机、压缩机及制冷设备 |
CN113659739B (zh) * | 2021-08-17 | 2022-09-30 | 浙江大学 | 一种新型模块化电机定子 |
CN113708522A (zh) * | 2021-10-28 | 2021-11-26 | 南京理工大学 | 一种高可靠永磁容错转向电机 |
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US20050174006A1 (en) * | 2004-02-06 | 2005-08-11 | Valeo Electrical Systems, Inc. | Winding topologies for stators in brushless motors |
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CN103095081A (zh) * | 2013-02-17 | 2013-05-08 | 天津大学 | 各相绕组间低热耦合无电磁耦合的双余度永磁同步电动机 |
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CN104779758A (zh) * | 2015-04-29 | 2015-07-15 | 哈尔滨工业大学 | 基于单双层混合绕组的模块化多相永磁同步电机 |
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CN202872493U (zh) * | 2012-10-09 | 2013-04-10 | 天津市松正电动汽车技术股份有限公司 | 一种磁路解耦的双绕组电机和六相电机 |
CN206922515U (zh) * | 2017-04-18 | 2018-01-23 | 苏州汇川联合动力系统有限公司 | 双余度定子及双余度电机 |
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2017
- 2017-04-18 CN CN201710254078.XA patent/CN107070016A/zh active Pending
- 2017-08-14 WO PCT/CN2017/097377 patent/WO2018192146A1/zh active Application Filing
Patent Citations (6)
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US20050174006A1 (en) * | 2004-02-06 | 2005-08-11 | Valeo Electrical Systems, Inc. | Winding topologies for stators in brushless motors |
CN1913284A (zh) * | 2006-08-14 | 2007-02-14 | 南京航空航天大学 | Halbach永磁容错无刷直流电机 |
CN103095081A (zh) * | 2013-02-17 | 2013-05-08 | 天津大学 | 各相绕组间低热耦合无电磁耦合的双余度永磁同步电动机 |
CN105656273A (zh) * | 2014-11-14 | 2016-06-08 | 中国航空工业第六八研究所 | 一种双余度分数槽隔槽嵌放无刷直流电机及嵌线方法 |
CN104506113A (zh) * | 2014-12-31 | 2015-04-08 | 南京航空航天大学 | 一种双绕组永磁容错电机驱动系统的控制方法 |
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