旋转电机
By designing alternating configurations of magnetic poles and dummy poles in a rotating electric motor and setting non-magnetic holes, the problem of difficulty in reducing rotor shaft length was solved, achieving improved torque output and performance.
CN116888862BActive Publication Date: 2026-07-17MITSUBISHI ELECTRIC CORP
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- MITSUBISHI ELECTRIC CORP
- Filing Date
- 2021-02-26
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing rotary motors, while ensuring torque output, have difficulty effectively reducing the rotor shaft length.
Method used
The stator and rotor structure design features alternating magnetic poles and dummy poles in the axial and circumferential directions, with non-magnetic holes placed at adjacent positions to satisfy a specific length relationship, ensuring increased effective magnetic flux and increased magnetic reluctance.
Benefits of technology
This technology improves torque output and reduces torque pulsation without increasing rotor shaft length, thus enhancing the performance of the rotating motor.
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Figure CN116888862B_ABST
Abstract
一种旋转电机，包括定子和转子，所述转子具有转子芯部和多个磁极，在多个所述磁体中包含由永磁铁形成的多个磁铁极和多个虚拟极，在所述轴向和所述周向这两个方向上，所述磁铁极和所述虚拟极交替地配置，在所述轴向上相邻的所述磁铁极与所述虚拟极之间设置有非磁性孔，当将所述磁铁极在所述轴向上的长度设为tm，将所述虚拟极在所述轴向上的长度设为tc，将所述非磁性孔在所述轴向上的长度设为ta，将所述转子芯部在所述轴向上的长度设为lc时，满足tm＞tc且lc＜2×tm+ta。
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