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Permanent magnet synchronous motor with interphase uncoupled structure

A permanent magnet synchronous motor, non-coupling technology, applied to synchronous motors with stationary armatures and rotating magnets, synchronous machine parts, magnetic circuit shapes/styles/structures, etc., can solve problems such as large stator iron loss, etc. Achieve the effect of fewer coils, eliminating interphase magnetic coupling, and improving current and electromagnetic torque control accuracy

Inactive Publication Date: 2012-06-27
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the magnetic coupling between the phases affects the control accuracy of the current; and the shortcoming that the magnetic flux generated by the electrification of each phase winding passes through a long magnetic circuit, the iron loss of the stator is relatively large, and a new method is proposed. A Phase-to-Phase Uncoupling Structure Permanent Magnet Synchronous Motor

Method used

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  • Permanent magnet synchronous motor with interphase uncoupled structure
  • Permanent magnet synchronous motor with interphase uncoupled structure
  • Permanent magnet synchronous motor with interphase uncoupled structure

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specific Embodiment approach 1

[0007] Specific implementation mode 1. Combination figure 1 and figure 2 ,as well as Figure 21 Describe this embodiment, this embodiment it is made up of casing 1, stator and rotor 6; Rotor is made up of permanent magnet array and rotor yoke 61; Stator is made up of several phase units 2; Phase unit 2 is made up of several phase armature cores 3 and phase armature winding 4; each phase armature core 3 is composed of 2k core units 5, and each phase armature core 3 is composed of 2k core units 5. The phase armature core with tooth holes 71, The tooth hole 71 is formed by stacking the tooth slots 72 of 2k core units 5, and each core unit 5 is composed of two teeth and a yoke segment; the two teeth are arranged in the axial direction, and the two teeth A yoke segment is connected between them; 2k core units 5 are arranged at equal intervals in the casing 1 along the circumferential direction; the coil 41 is wound into a phase armature winding 4 through the tooth holes 71 of t...

specific Embodiment approach 2

[0008] Specific embodiment two, combine Figure 3 to Figure 6 Describe this embodiment, the difference between this embodiment and the specific embodiment is that each core unit 5 in the phase armature core 3 is composed of a long tooth 51, a short tooth 52, a high-level yoke segment 53, a The low horizontal yoke section 54 and a vertical yoke section 55 are composed; the long teeth 51 and the short teeth 52 are arranged along the horizontal direction of the cross section, and the long teeth 51 and the short teeth 52 are sequentially connected with The high level yoke section 53, the vertical yoke section 55 and the low level yoke section 54, the side root of the long tooth 51 is connected to the side of one end of the high level yoke section 53, and the high level magnetic The other side of the yoke section 53 is connected to the root of one side of the vertical yoke section 55, and the other side of the vertical yoke section 55 is connected to the bottom of the low horizonta...

specific Embodiment approach 3

[0009] Specific embodiment three, combine figure 1 , image 3 and Figure 4 Describe this embodiment. The difference between this embodiment and the specific embodiment is that the coil 41 is circularly wound on the upper part of the long tooth 51 or the high horizontal yoke segment 53 or the vertical yoke segment 55 through the two tooth holes 71 into a phase-phase armature winding 4. Other compositions and connection methods are the same as those in Embodiment 1.

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Abstract

The invention discloses a permanent magnet synchronous motor with an interphase uncoupled structure, relating to the field of motors and solving the problem that the control precision of current is influenced because magnetic coupling exists between phases and the defect that stator iron loss is larger because a magnetic circuit passed by magnetic flow generated by electrifying each group of windings is longer. The phase unit of a stator comprises a plurality of phase armature iron cores and a plurality of phase armature windings, wherein each phase armature iron core comprises 2k iron core units; each phase armature iron core is a phase armature iron core with comprises 2k iron core units and has a tooth hole; the tooth hole is formed by superposing tooth slots; the two teeth of each iron core unit are arranged along the axial direction; a magnet yoke section is connected between the two teeth; 2k iron core units are sequentially arranged in a housing case at equal intervals along the peripheral direction; and coils are wounded into single-phase armature windings by tooth holes. The motor has im phase units when being an m-phase motor, and the included angle between the axes of two adjacent phase armature windings is an electrical angle of [(j-1)+(1 / m)]*180 degrees. The permanent magnet synchronous motor not only can be used as an electromotor but also can be used as a generator.

Description

technical field [0001] The invention relates to the field of motors, in particular to a permanent magnet synchronous motor. Background technique [0002] The structure of the traditional multi-phase permanent magnet synchronous motor is as follows: Figure 27 shown. The armature winding of the motor is a distributed winding, the number of coils required to form the winding is large, the winding ends of each phase of the winding cross each other, the winding ends are long, and the copper consumption is large; the winding insulation is complicated and the manufacturing cost is high. Since there is magnetic coupling between phases, on the one hand, the existence of mutual inductance will affect the control accuracy of the current; The power consumption is large, which limits the further improvement of the motor efficiency. Contents of the invention [0003] In order to solve the problem that the magnetic coupling between the phases affects the control accuracy of the curren...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/12H02K21/02H02K1/14H02K1/27
Inventor 寇宝泉谢大纲张千帆
Owner HARBIN INST OF TECH
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