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Double-layer long-short-pitch mixed winding for 36-slot 14-pole three-phase permanent magnet synchronous motor

A technology of permanent magnet synchronous motor and hybrid winding, which is applied in the direction of synchronous machine parts, shape/style/structure of winding conductor, electromechanical device, etc., to achieve the effect of improving the overall performance index and reducing the amount of copper used

Active Publication Date: 2020-04-07
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of short-distance coils is not as good as long-distance coils only from the perspective of fundamental winding coefficients

Method used

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  • Double-layer long-short-pitch mixed winding for 36-slot 14-pole three-phase permanent magnet synchronous motor
  • Double-layer long-short-pitch mixed winding for 36-slot 14-pole three-phase permanent magnet synchronous motor
  • Double-layer long-short-pitch mixed winding for 36-slot 14-pole three-phase permanent magnet synchronous motor

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Embodiment Construction

[0039] Combine below Figure 1 to Figure 7 The implementation of the 36-slot 14-pole permanent magnet synchronous motor proposed by the present invention using a long-short-pitch mixed winding is given.

[0040] There are 36 slots on the stator of the 36-slot 14-pole three-phase permanent magnet synchronous motor, and the permanent magnet rotor has 14 magnetic poles with N and S poles alternated in turn, a total of 7 pairs of permanent magnet poles, 36 slots and 14 The star diagram of the electromotive force of the pole permanent magnet synchronous motor slot is as follows figure 1 shown. For a 36-slot 14-pole permanent magnet synchronous motor, after phase separation by 60°, the coils on the upper coil side belonging to the positive phase belt of phase A are 1, 12, 17, 22, 27 and 32, and the upper coil side belongs to the negative phase of phase A The coils of the belt are 4, 9, 14, 19, 30 and 35; the coils with the upper coil side belonging to the B phase positive phase be...

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Abstract

The invention discloses a double-layer long-short-distance hybrid winding suitable for a 36-slot 14-pole three-phase permanent magnet synchronous motor, wherein each phase winding has 12 coils, wherein 8 coils are short-distance coils with span of 2 slots and 4 coils are long-distance coils with span of 3 slots; Each phase winding branch is composed of four short-range coils with span of 2 slots and two long-range coils with span of 3 slots, which are connected in series according to the principle of maximum composite fundamental electromotive force. All the coil edges belonging to the same phase winding are located in the stator slot at the same position as all the coil edges in the stator slot of a 36-slot 14-pole three-phase permanent magnet synchronous motor with 3-slot long-distance coil double-layer winding, Only the order of connection between all the coil sides belonging to the same phase winding is changed, and the fundamental winding coefficient is 0.9236. Compared with the two-layer distributed winding with two-slot short-distance coil, the coefficient of fundamental winding is 0.8985, the copper is saved, and the comprehensive performance index of motor is high.

Description

technical field [0001] The invention belongs to the field of electrical engineering and relates to a double-layer long-short-pitch hybrid winding suitable for a 36-slot 14-pole three-phase permanent magnet synchronous motor. Background technique [0002] The permanent magnet synchronous motor has the advantages of simple structure, high torque density per unit mass, and a wide range of high-efficiency work. Especially in low-speed and high-torque applications, the permanent magnet synchronous motor structure will achieve good results. Generally, permanent magnet synchronous motors used in low-speed and high-torque applications have more pole pairs of the permanent magnet rotor and fewer slots in the stator, and the stator winding is a fractional slot winding. In this way, while reducing the thickness of the iron core at the yoke of the stator and rotor and increasing the diameter of the air gap between the stator and rotor as much as possible, the end of the stator winding c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/02H02K3/16H02K3/28
CPCH02K3/16H02K3/28H02K21/02H02K2213/03
Inventor 陈益广郝伟杰沈勇环
Owner TIANJIN UNIV
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