Self-starting synchronous reluctance rotor and stator-rotor structure

By optimizing the design of the magnetic barrier cavity and magnetic bridge of the self-starting synchronous reluctance rotor and increasing the number of squirrel cage slots, the problems of low efficiency and high manufacturing difficulty of existing self-starting synchronous reluctance motors have been solved, achieving a high-efficiency and stable improvement in motor performance.

CN224473091UActive Publication Date: 2026-07-07ZHEJIANG SHAOXING XINXING ELECTROMECHANICAL CO LTD
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Patent Information

Application Number
CN202522006865.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-10
Publication Date
2026-07-07
Estimated Expiration
2035-09-10

AI Technical Summary

Technical Problem

The slit magnetic barrier cavity structure of the rotor of the existing linear two-pole self-starting synchronous reluctance motor results in a large operating current, a small power factor, and low efficiency. Furthermore, the multi-layer magnetic barrier cavity structure increases the difficulty of lamination stamping and the risk of rotor deformation during forming.

Method used

The self-starting synchronous reluctance rotor design includes a rotor core, first and second magnetic barrier cavities, support ribs and squirrel cage slots. By optimizing the width of the magnetic barrier cavity and the design of the magnetic bridge, the number of squirrel cage slots is increased, improving motor performance. Copper enameled wire or aluminum enameled wire windings are used in the stator and rotor structure.

Benefits of technology

It reduces the motor's operating current, improves the power factor and motor efficiency, enhances the rotor's mechanical strength, reduces manufacturing difficulty and deformation risk, and increases the motor's output power.

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Abstract

A rotor iron core is provided with a central shaft hole, first magnetic barrier cavities, second magnetic barrier cavities, supporting ribs and mouse cage grooves from inside to outside, the first magnetic barrier cavities, the second magnetic barrier cavities and the supporting ribs are distributed on the two sides of a d shaft, a first magnet yoke is formed between the first magnetic barrier cavities, and a second magnet yoke is formed between the second magnetic barrier cavities. Second magnet yokes are respectively formed between the adjacent first magnetic barrier cavities and second magnetic barrier cavities, each first magnetic barrier cavity is provided with an arc-shaped winding cavity section and a first straight cavity section, each second magnetic barrier cavity is provided with an arc-shaped avoiding cavity section and a second straight cavity section, and the mouse cage grooves adjacent to the supporting ribs in the mouse cage grooves are communicated through circumferential grooves to form H-shaped connected conductor groove groups. The width between the first straight cavity sections is greater than that between the arc-shaped winding shaft cavity sections and the central shaft hole; the equal-width second magnet yokes are larger than the width between the arc-shaped winding shaft cavity sections and the central shaft hole and smaller than the width between the first straight cavity sections. The rotor forming quality is good, the working current of the motor is reduced, the power factor is improved, and the motor efficiency is improved.
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