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A variable-winding split-tooth permanent magnet synchronous vernier motor with multiple operating modes

A technology of permanent magnet synchronous and vernier motors, applied to synchronous motors with stationary armatures and rotating magnets, synchronous machine parts, shape/style/structure of winding conductors, etc., can solve complex motor topology and drive control and other problems, to achieve the effect of high torque density

Active Publication Date: 2021-10-08
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the motor uses two sets of three-phase AC windings, which makes the topology and drive control of the motor more complicated

Method used

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  • A variable-winding split-tooth permanent magnet synchronous vernier motor with multiple operating modes
  • A variable-winding split-tooth permanent magnet synchronous vernier motor with multiple operating modes
  • A variable-winding split-tooth permanent magnet synchronous vernier motor with multiple operating modes

Examples

Experimental program
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Effect test

Embodiment

[0097] Such as Figure 5 As shown, a multi-operation mode permanent magnet synchronous vernier motor in this embodiment adopts an outer rotor structure, and the motor includes an inner stator 1, an outer rotor 2, a permanent magnet 3, an armature winding 4 and a rotating shaft 5, and the outer rotor 2 is arranged on On the rotating shaft 5, there is an air gap between the inner stator 1 and the outer rotor 2. The thickness of the air gap is related to the power level of the motor, the selected permanent magnet material and the processing and assembly process of the inner stator 1 and the outer rotor 2.

[0098] The inner stator 1 includes an inner stator core 1-1 and an armature winding 4. The inner stator core 1-1 includes an inner stator yoke 6 and 12 inner stator teeth 7, and 12 inner stators are formed between adjacent inner stator teeth 7. Slot 8, two or three split small teeth 9 are respectively arranged on two adjacent inner stator teeth 7, so there are altogether 30 spli...

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Abstract

The invention provides a variable-winding split-tooth permanent magnet synchronous vernier motor with multiple operating modes, which belongs to the field of motors. The permanent magnets of the motor of the present invention can be installed in a variety of ways, such as surface mount, built-in or embedded, to generate the permanent magnet excitation magnetic field required for the operation of the motor; the stator core adopts a split-tooth structure, and the two adjacent stator teeth The number of split small teeth is different, thereby forming a non-uniform modulation tooth structure. Based on the modulation effect of the non-uniform modulation teeth on the permanent magnetic field, harmonics of the excitation magnetic field with different numbers of pole pairs are generated; armature windings are arranged in the stator slots, and The ends of the armature windings of each phase are connected by switching components; when the armature winding is fed with symmetrical alternating current, it can generate different pole-pair number armature reaction magnetic fields based on different switch connection states, and then modulated with non-uniform modulation teeth to generate The effective coupling of the harmonics of the permanent magnet excitation field with different pole pairs, thereby realizing the multi-mode operation of the motor.

Description

technical field [0001] The invention relates to the field of motors, in particular to a split-tooth permanent magnet synchronous vernier motor with variable windings and multiple operating modes. Background technique [0002] Traditional permanent magnet synchronous motors have the advantages of high efficiency and high power density, and are widely used in electric vehicles and other fields that require high power density and high operating efficiency. However, traditional permanent magnet synchronous motors are based on permanent magnet excitation, and the excitation magnetic field is difficult to adjust, thereby limiting its speed range. Therefore, mechanical gear transmissions are usually used to realize the variable speed function, but there are disadvantages such as mechanical fatigue, friction loss, vibration and noise. The permanent magnet vernier motor operates based on the principle of magnetic field modulation and has the characteristics of low speed and high torq...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K21/14H02K21/02H02K1/16H02K3/28
CPCH02K21/14H02K21/02H02K1/165H02K3/28H02K2213/03H02K2201/03
Inventor 杜怿何卓凡肖凤朱孝勇毛怡全力
Owner JIANGSU UNIV
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