WO2018228282A1 - Single-phase multipolar module and single-phase multipolar module combined switched reluctance motor - Google Patents

Abstract

Disclosed in the present invention are a single-phase multipolar module and a single-phase multipolar module combined switched reluctance motor, belonging to the field of switched reluctance motors. The motor comprises a rotor iron core (20), a motor casing (30), and a motor shaft (40), and further comprises several single-phase multipolar modules (10). As the reluctance motor is formed by combining single-phase multipolar modules (10) according to the present invention, phases neither have salient poles staggered therebetween nor share a yoke magnetic circuit, and each phase only uses the salient pole magnetic circuit of said phase itself in the working process, thereby mutual inductance between phases can be reduced; meanwhile, compared with an integral iron core, the use of a single-phase multipolar module can significantly reduce the cost of a mould, solving the problems of mutual induction between phases and mould cost.

Description

 Single-phase multi-pole module and single-phase multi-pole module combined switch reluctance motor

[Technical Field]

The invention relates to the field of switched reluctance motors, in particular to a single-phase multi-pole module and a single-phase multi-pole module combined switch reluctance motor.

【Background technique】

In the existing switched reluctance motor, the salient poles of each phase are staggered, and the yoke is a common magnetic circuit. When the single phase is energized, the mutual inductance is weak. At this time, the flux linkage is relatively simple, and the control calculation is relatively easy. There are overlapping working areas in the two phases, and the two phases need to share the magnetic circuit of the yoke and exchange the magnetic circuit of the salient pole. At this time, relatively serious interphase mutual inductance is generated, which makes the magnetic field extremely complicated and difficult to calculate accurately, which leads to complicated control strategy. In the development process of the switched reluctance motor, the mold is the main cost. If the stator core can be split into modules, the mold cost can be reduced. The existing switched reluctance motor design theory can support the stator core for module splitting. However, it can only be disassembled into a single-phase unipolar module or a multi-phase multi-pole module, and cannot be split into single-phase multi-pole modules. After the combination, the phase yoke connection and the inter-phase salient interleaving still have a yoke common magnetic circuit, and Can not reduce the mutual mutual feeling. Therefore, whether or not to design a switched reluctance motor capable of reducing the cost of the mold and the mutual inductance between the phases is an urgent technical problem to be solved by the conventional switched reluctance motor.

[Summary of the Invention]

In order to improve the deficiencies of the prior art, an object of the present invention is to provide a single-phase multi-pole module and a single-phase multi-pole module combined switched reluctance motor, which are combined into a motor by using a single-phase multi-pole module, Achieve reduced mold costs and mutual sympathy.

The technical solution adopted by the present invention to solve the technical problem thereof is:

A single-phase multi-pole module is applied to a switched reluctance motor with a phase number q and a rotor core salient pole number y, q≥3 and is a natural number, y≥nqz and is a natural number, n is the single phase The number of groups of the multi-pole module in the reluctance motor, and n is a natural number, z≥2 and is a natural number, the single-phase multi-pole module integrates a core module and a single-phase winding, and the core module is a stator core The segment module, the core module includes a salient pole and a yoke connecting the salient poles, the number of salient poles of the iron core module is z, and the angle between adjacent salient poles of the iron core module is A=360/ y; the single-phase winding is wound around the salient pole or the yoke of the core module.

The invention also provides a single-phase multi-pole module combined switch reluctance motor, which comprises a rotor core, a motor casing and a motor shaft, the phase number is q phase, q≥3 and is a natural number, the single phase The multi-pole modular combined switched reluctance motor further comprises a plurality of single-phase multi-pole modules, each of the single-phase multi-pole modules integrating a core module and a single-phase winding, the core module being a segment of the stator core a module, the core module includes a salient pole and a yoke connecting the salient poles, wherein the number of salient poles of the iron core module is z, z≥2 and is a natural number, and an angle between adjacent salient poles of the iron core module is A. The single-phase winding is wound around the salient pole or the yoke of the iron core module; the plurality of single-phase multi-pole modules are arranged in the circumferential direction of the motor, and the first phase is multi-phased. a pole module, a second phase single-phase multi-pole module, ..., a q-phase single-phase multi-pole module, and each phase forms a phase-to-phase mechanical angle, the phase-to-phase yokes are not connected, and n is a natural number, thereby being combined into a stator core; The rotor core is uniformly provided with y salient poles in the circumferential direction, y≥nqz and is a natural number, and the rotor core is adjacent A polar angle is =360/y; phase mechanical angle = zA ± A / q. The motor part example design parameters refer to the following table:

 Table 1 Number of phases q 3 3 3 3 3 3 4 ... Single-phase multi-pole module salient pole number z 2 2 2 2 2 3 2 ... Number of groups n 1 1 2 2 2 2 2 ... Rotor salient pole number y≥nqz 6 7 12 13 14 20 18 ... Adjacent salient pole angle A=360/y 60.0 51.4 30.0 27.7 25.7 18.0 20.0 ... Interphase mechanical angle zA+A/q 140.0 120.0 70.0 64.6 60.0 60.0 45.0 ... Phase-to-phase mechanical angle zA-A/q 100.0 85.7 50.0 46.2 42.9 48.0 35.0 ...

Preferably, the number of salient poles of the rotor core is y=n(qz+1), and the mechanical angle between phases is zA+A/q, so that the single-phase multi-pole module is evenly distributed on the circumference. The motor part example design parameters refer to the following table:

Table 2 Number of phases q 3 3 3 3 3 4 4 ... Single-phase multi-pole module salient pole number z 2 2 2 3 3 2 2 ... Number of groups n 1 2 3 1 2 1 2 ... Rotor salient pole number y=n(qz+1) 7 14 twenty one 10 20 9 18 ... Adjacent salient pole angle A=360/y 51.4 25.7 17.1 36.0 18.0 40.0 20.0 ... Interphase mechanical angle zA+A/q 120.0 60.0 40.0 120.0 60.0 90.0 45.0 ...

Preferably, the single-phase multi-pole module combined switched reluctance motor is divided into n sets of phases, and n is an even number of natural numbers, so that the phases are symmetrical. The motor part example design parameters refer to the following table:

table 3 Number of phases q 3 3 3 4 4 5 5 ... Single-phase multi-pole module salient pole number z 2 2 2 2 2 2 2 ... Number of groups n, n is even 2 4 6 2 4 2 4 ... Rotor salient pole number y=n(qz+1) 14 28 42 18 36 twenty two 44 ... Adjacent salient pole angle A=360/y 25.7 12.9 8.6 20.0 10.0 16.4 8.2 ... Interphase mechanical angle zA+A/q 60.0 30.0 20.0 45.0 22.5 36.0 18.0 ...

 Preferably, the number of salient poles of the iron core module is z=2, so that the core module has a smaller die size and a lower cost.

Further, the single-phase multi-pole module combined switched reluctance motor is an inner rotor motor, and the single-phase multi-pole modules are spaced apart on the inner circumference of the motor casing and fixedly mounted on the motor casing. The inner wall of the motor casing is provided with a groove for fixing the single-phase multi-pole module, and an angle between adjacent grooves is equal to a mechanical angle between phases.

Further, the single-phase winding is wound on the yoke of the iron core module, and the purpose is to make the single-phase winding easy to install and fix. The motor casing is a non-magnetic material, and the purpose is to block the phase yoke magnetic Lutong, which reduces mutual mutual inductance.

Further, the single-phase multi-pole module combined switched reluctance motor is an outer rotor motor, and the single-phase multi-pole modules are spaced apart on the outer circumference of the motor shaft and fixedly mounted on the motor shaft. The motor shaft is a split structure, and is disposed as a core shaft and a bracket. The bracket is sleeved on the mandrel, and the outer wall of the bracket is provided with a groove for fixing the single-phase multi-pole module, adjacent to the concave The angle between the slots is equal to the mechanical angle between the phases.

Further, the single-phase winding is wound around the yoke portion of the iron core module for the purpose of simple mounting and fixing of the single-phase winding, and the bracket is a non-magnetic conductive material, and the purpose is to block the magnetic circuit communication between the phase-to-phase yoke portions. , that is, reduce mutual mutual inductance.

Further, the rotor core is an aliquot module structure, and the purpose is to reduce the cost of the rotor core mold.

The principle of the invention is that the stator yoke of the conventional switched reluctance motor is continuous, and the adjacent convex poles are used for different phase windings, that is, the salient pole magnetic circuits are mutually staggered, and the two yokes share the yoke magnetic circuit and exchange the salient pole magnetics when the two phases are energized. Road, so it produces a more serious mutual relationship. The single-phase multi-pole module of the present invention is wound with a single-phase winding, the salient pole magnetic circuit on the iron core module is used for the in-phase winding, and the combined back yoke portion is not connected, and when the two phases are energized, each phase uses each The phase of the salient pole of the phase itself can significantly reduce the mutual inductance between the phases, while the single-phase multi-pole module can significantly reduce the cost of the mold compared to the integral core.

Due to the adoption of the above technical solution, the beneficial effects of the present invention are as follows: the present invention discloses a single-phase multi-pole modular combined switched reluctance motor, wherein the stator core is composed of single-phase multi-pole modules, and the phases are phase-to-phase There is no salient pole staggering and no common yoke magnetic circuit. In each working phase, only the salient pole magnetic circuits of each phase are used in the working process, so that the mutual inductance between phases can be reduced, and the single-phase multi-pole module can be significantly reduced compared with the monolithic core. Mold cost.

[Description of the Drawings]

 1 is a schematic view showing the structure of a single-phase multi-pole module in the present invention.

 2 is a schematic view showing the phase structure of a single-phase multi-pole module of an inner rotor motor according to an embodiment of the present invention.

 3 is a schematic view showing the structure of a motor casing of an inner rotor motor according to an embodiment of the present invention.

 4 is a schematic view showing the phase structure of a single-phase multi-pole module of an outer rotor motor according to an embodiment of the present invention.

 Fig. 5 is a schematic view showing the structure of a bracket of an outer rotor motor according to an embodiment of the present invention.

 The meanings marked in the figure are: 10. Single-phase multi-pole module, 11. Iron core module, 12. Single-phase winding, 10A. 1st phase single-phase multi-pole module, 10B. 2nd phase single-phase multi-pole module, 10C. 3rd phase single-phase multi-pole module, 20. rotor core, 21. salient pole, 30. motor shell, 31. Groove, 40. Motor shaft, 41. Mandrel, 42. Bracket, 421. Groove.

【detailed description】

In order to reduce the mutual inductance between the reluctance motors, the present invention provides a single-phase multi-pole module combined switched reluctance motor, wherein the single-phase multi-pole module used is as shown in FIG. 1, and the single-phase multi-pole module 10 is integrated. The core module 11 and the single-phase winding 12, the core module 11 is a segmented module of the stator core, the core module 11 includes a salient pole and a yoke connecting the salient poles, and the number of salient poles of the core module 11 is z. Z≥2 is a natural number, the figure shows the case where the number of salient poles is two; the angle between the adjacent salient poles of the iron core module is A; the single-phase winding is wound around the salient pole or yoke of the iron core module Ministry. The single-phase multi-pole module combined switch reluctance motor of the invention comprises a rotor core, a motor shell and a motor shaft, the phase number is q phase, q≥3 and is a natural number, and the reluctance motor further comprises a plurality of single-phase multi-phase a pole module, each of the single-phase multi-pole modules integrates a core module and a single-phase winding, the core module is a segmented module split into a stator core, and the core module includes a salient pole and a yoke connecting the salient poles The number of salient poles of the iron core module is z, z≥2 and is a natural number, and z is preferably 2, the angle between adjacent salient poles of the iron core module is A; the single-phase winding is wound around the salient pole or yoke of the iron core module a plurality of single-phase multi-pole modules are arranged in the circumferential direction of the motor in the order of the first phase single-phase multi-pole module, the second-phase single-phase multi-pole module, ..., the q-phase single-phase multipole Module, and each phase forms a phase-to-phase mechanical angle, the phase yoke is not connected, n is a natural number, so that several single-phase multi-pole modules are combined to form a new type of stator core; the rotor core is uniformly arranged in the circumferential direction with y Salient pole, y≥nqz and is a natural number, and preferably y= n(qz+1), the angle between adjacent salient poles of the rotor core is A = 360 / y; the mechanical angle between phases is = zA ± A / q, And preferably, the interphase mechanical angle = zA + A / q. According to the technical solution of the present invention, when the values of the parameters are different, the design parameters of the reluctance motor part are referred to Table 1-3, and those skilled in the art can design and manufacture different reluctance motors according to the relevant parameters.

In order to make the objects, technical solutions and advantages of the present invention more clear, in the following embodiments, the values of the parameters are specifically q=3, z=2, n=2 and combined with FIG. 2-5 to further detail the present invention. Description. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

2 and 4 are schematic diagrams showing the phase structure of the single-phase multi-pole modules in the reluctance motor in the inner rotor motor and the outer rotor motor, respectively. The reluctance motor shown comprises a rotor core 20, a motor casing 30, a motor shaft 40, the number of phases is q=3 phase, and further comprises six single-phase multi-pole modules 10, each of which has a single-phase multi-pole module 10 The iron core module 11 and the single-phase winding 12 are integrated, the number of salient poles of the iron core module 11 is z=2, and the angle between the adjacent salient poles of the iron core module 11 is A, and A = 360 / y ≈ 25.7 °; the single-phase winding 12 is wound around the yoke of the core module 11. The six single-phase multi-pole modules are arranged on the inner wall of the motor casing 30 or on the outer circumference of the motor shaft 40 in groups of n=2, and the first phase single-phase multi-pole module 10A and the second-phase single-phase multi-pole module 10B are sequentially arranged. , q=3 phase single-phase multi-pole module 10C, first-phase single-phase multi-pole module 10A, second-phase single-phase multi-pole module 10B, q=3 phase single-phase multi-pole module 10C, and each phase forms an interphase The mechanical angle, the phase yoke portion is not connected; the rotor core 20 is uniformly disposed in the circumferential direction with y=n(qz+1)=14 salient poles 21, and the adjacent angle of the salient poles of the rotor core 20 is A = 360 / y ≈ 25.7 °; phase mechanical angle = zA + A / q = 60 °.

Referring to Figures 2 and 3, the reluctance machine is shown as an inner rotor motor. The single-phase winding 12 is wound around a yoke of the core module 11, and the motor casing 30 is a non-magnetic material aluminum alloy. The single-phase multi-pole module 10 is circumferentially distributed on the inner circumference of the motor casing 30 and fixedly mounted on the motor casing 30. The inner circumferential surface of the motor casing 30 is provided with a groove 31, and an angle between adjacent grooves 31 is provided. Equal to the phase-to-phase mechanical angle, the recess 31 is used to secure the single-phase multi-pole module 10.

4 and 5, in the case where the reluctance motor is an outer rotor motor, the single-phase winding 12 is wound around the yoke of the core module 11, and the single-phase multi-pole module 10 is at the motor shaft 40. The outer circumference is spaced apart and fixedly mounted on the motor shaft 40. The motor shaft 40 is a split structure, and is provided as a core shaft 41 and a bracket 42. The bracket 42 is a non-magnetic material aluminum alloy, and the bracket 42 is set. On the mandrel 41, a groove 421 is disposed on the outer peripheral surface of the bracket 42. The angle between the adjacent grooves 421 is equal to the mechanical angle between the phases, and the groove 421 is for fixing the single-phase multi-pole module 10. In the outer rotor motor, the rotor core has a 7-division module structure.

The embodiment of the invention discloses a single-phase multi-pole module combined switched reluctance motor, which is composed of a single-phase multi-pole module 10, and there is no salient pole interleaving between phases and phases, and there is no shared yoke magnetic circuit. In the working process, only the salient pole magnetic circuits of each phase are used, so that the mutual inductance between phases can be reduced, and the single-phase multi-pole module can significantly reduce the mold cost compared with the single-core multi-pole module.

The above description is only a description of the preferred embodiments of the present invention, and it should be noted that due to the finiteness of the literal expression, there is an infinite specific structure objectively, and those skilled in the art can leave without departing from the principles of the present invention. In the meantime, several modifications may be made, and such improvements are also considered to be the scope of protection of the present invention.

Claims (10)

A single-phase multi-pole module is applied to a switched reluctance motor with a phase number q and a rotor core salient pole number y, q≥3 and is a natural number, y≥nqz and is a natural number, n is the single phase The number of groups of the multi-pole module in the reluctance motor, and n is a natural number, z≥2 and is a natural number, characterized in that the single-phase multi-pole module integrates a core module and a single-phase winding, the core module The segment module of the stator core, the core module includes a salient pole and a yoke portion connecting the salient poles, the number of salient poles of the iron core module is z, and the angle between adjacent salient poles of the iron core module is A = 360 / y; the single-phase winding is wound around the salient pole or yoke of the core module. A single-phase multi-pole module combined switch reluctance motor comprising a rotor core, a motor casing and a motor shaft, the phase number is q phase, q≥3 and is a natural number, and is characterized in that: several single phases are also included a multi-pole module, each of the single-phase multi-pole modules integrating a core module and a single-phase winding, the core module being a segmented module of a stator core, the core module comprising a salient pole and a connecting salient pole a yoke portion, wherein the number of salient poles of the core module is z, z≥2 and is a natural number, the angle between adjacent salient poles of the iron core module is A; and the single-phase winding is wound around the iron core module a plurality of single-phase multi-pole modules are arranged in the circumferential direction of the motor in the order of the first phase, the single-phase multi-phase multi-pole module, the second-phase single-phase multi-pole module, ... a q-phase single-phase multi-pole module, and each phase forms a phase-to-phase mechanical angle, the phase-to-phase yokes are not connected, n is a natural number, and is combined into a stator core; the rotor core is uniformly provided with y salient poles in the circumferential direction, y ≥nqz is a natural number, and the angle between adjacent salient poles of the rotor core is A =360/y; phase mechanical angle = zA ± A / q. A single-phase multi-pole modular combined switched reluctance motor according to claim 2, wherein said rotor core has a number of salient poles of y=n(qz+1), and an interphase mechanical angle=zA+A /q. A single-phase multi-pole modular combined switched reluctance motor according to claim 2, wherein said single-phase multi-pole module combined switched reluctance motor is divided into n sets of phases, and n is an even natural number. . The single-phase multi-pole module combined switched reluctance motor according to claim 2, wherein the number of salient poles of the core module is z=2. The single-phase multi-pole module combined switched reluctance motor according to claim 2, wherein the single-phase multi-pole module combined switched reluctance motor is an inner rotor motor, and the single-phase multi-phase The pole modules are spaced apart on the inner circumference of the motor casing and fixedly mounted on the motor casing, and the inner wall of the motor casing is provided with a groove for fixing the single-phase multi-pole module, and adjacent grooves The angle between the two is equal to the mechanical angle of the phase. A single-phase multi-pole modular combined switched reluctance motor according to claim 6, wherein said single-phase winding is wound around a yoke of said core module, said motor casing being non- Magnetic material. The single-phase multi-pole module combined switched reluctance motor according to claim 2, wherein the single-phase multi-pole module combined switched reluctance motor is an outer rotor motor, and the single-phase multi-phase The pole modules are spaced apart from each other on the outer circumference of the motor shaft and fixedly mounted on the motor shaft, the motor shaft is a split structure, and is arranged as a core shaft and a bracket, and the bracket is set on the mandrel. a groove for fixing the single-phase multi-pole module is disposed on an outer wall of the bracket, and an angle between adjacent grooves is equal to a mechanical angle between phases A single-phase multi-pole modular combined switched reluctance motor according to claim 8, wherein said single-phase winding is wound around a yoke of said core module, said bracket being non-magnetically material. A single-phase multi-pole modular combined switched reluctance motor according to claim 8, wherein said rotor core is of an aliquoted module structure.