Rotor and motor
By setting a guide slot and a sliding second magnetic pole on the rotor iron core of the permanent magnet motor, the magnetic steel movement is used to move the magnetic steel body to the first magnetic pole, which solves the problem of increasing iron loss during high -frequency operation of the permanent magnet motor, and realizes it. The efficiency of motor efficiency is improved.
CN119382375APending Publication Date: 2025-01-28ZHUHAI LANDA COMPRESSOR +1
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Patent Information
- Application Number
- CN202411530767.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-01-28
AI Technical Summary
Technical Problem
The iron loss of permanent magnet motor increases when running at high frequency, resulting in a decrease in motor efficiency.
Method used
Design a rotor, the inner side of the rotor iron core is set up along the intervals of multiple groups of first magnetic poles. The two adjacent groups are formed between the first magnetic poles. Under the centrifugal force generated by the rotation of the rotor of the rotor, the magnetic steel body moves along the side of the first magnetic pole to the side of the first magnetic pole.
Benefits of technology
By reducing the total number of rotor magnetic poles, reducing the iron loss of the motor, and improving the efficiency of the motor during high -frequency runtime.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN119382375A_ABST
Abstract
The rotor comprises a rotor iron core, multiple groups of first magnetic poles are arranged on the inner side of the rotor iron core at intervals in the circumferential direction, a guide groove is formed between every two adjacent groups of first magnetic poles, and the guide grooves extend towards the sides, away from the axis of the rotor iron core, of the first magnetic poles; the second magnetic pole comprises at least one magnetic steel body, and the magnetic steel body is slidably arranged in the guide groove; when the second magnetic pole is acted by centrifugal force generated by rotation of the rotor iron core, the magnetic steel body moves to one side, far away from the axis of the rotor iron core, of the first magnetic pole along the guide groove. Therefore, when the motor operates at high frequency, under the action of centrifugal force, the magnetic steel bodies forming the second magnetic poles move to the sides, away from the axis of the rotor core, of the first magnetic poles along the guide grooves, so that the second magnetic poles between two adjacent groups of first magnetic poles are split to the first magnetic poles, the total number of rotor magnetic poles is reduced, and the iron loss of the motor is correspondingly reduced; and the performance of the motor in high-frequency operation is improved.
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