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Permanent magnet brushless motor rotor iron core structure for brake system

A permanent magnet brushless motor and rotor core technology, applied in the direction of magnetic circuit shape/style/structure, magnetic circuit rotating parts, electrical components, etc., can solve the problems of reducing magnetic flux leakage, reduce space, reduce reflection Potential harmonic content, volume reduction effect

Pending Publication Date: 2019-08-23
NIDEC KAIYU AUTO ELECTRIC JIANGSU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Can not achieve the purpose of reducing magnetic flux leakage

Method used

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  • Permanent magnet brushless motor rotor iron core structure for brake system
  • Permanent magnet brushless motor rotor iron core structure for brake system
  • Permanent magnet brushless motor rotor iron core structure for brake system

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Embodiment Construction

[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0017] refer to Figure 1-4 , a rotor core structure of a permanent magnet brushless motor for a braking system, comprising a rotor core 1, a shaft groove 2 is provided at the center of the rotor core 1, and the rotor core 1 is located on the outer periphery of the shaft slot 2 and uniformly arranged along the circumferential direction There are several magnetic steel slots 3, and the rotor core 1 is located at both ends of each magnetic steel slot 3. There are magnetic isolation slots 4 communicating with the magnetic steel slots 3, and magnetic isolation filling blocks 5 are arranged in the magnetic isolation slots 4.

[0018] The magnetic isolation filling block 5...

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Abstract

The invention discloses a permanent magnet brushless motor rotor iron core structure for a brake system. The permanent magnet brushless motor rotor iron core structure comprises a rotor iron core. A rotating shaft groove is formed in the circle center of the rotor iron core. A plurality of magnetic steel grooves are evenly formed in the rotor iron core and are located in the periphery of the rotating shaft groove in the circumferential direction. Magnetic isolation grooves communicated with the magnetic steel grooves are formed in the rotor iron core and are located in the two ends of each magnetic steel groove. Magnetic isolation filling blocks are arranged in the magnetic isolation grooves. The occupied space of the magnetic isolation grooves can be reduced. The magnetic isolation effectis ensured through notification. The size of the whole motor is reduced.

Description

technical field [0001] The invention relates to a structure of a rotor iron core of a permanent magnet synchronous motor. Background technique [0002] The leakage flux of the permanent magnet synchronous motor will reduce the power density of the motor and the utilization rate of the permanent magnet, and increase the harmonic content of the back emf, thus bringing vibration and noise to the motor operation process. In order to reduce the magnetic flux leakage of the motor, most of them will adopt magnetic isolation slots on the rotor punch, such as the invention patent of application number 201210336072.4, a rotor punch of an IPM DC brushless motor, which discloses a rotor with a magnetic isolation slot Punching, but this kind of use of air to block the flux leakage path requires a relatively large magnetic isolation slot, and it is still possible to pass part of the magnetic flux leakage in the magnetic isolation slot. The purpose of reducing magnetic flux leakage cannot...

Claims

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Application Information

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IPC IPC(8): H02K1/27H02K29/00
CPCH02K1/27H02K29/00
Inventor 王咏涛邱高峰王朝海
Owner NIDEC KAIYU AUTO ELECTRIC JIANGSU