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Method for diagnosing magnetization faults of permanent magnet motors

一种永磁电动机、电动机的技术，应用在电动发电机测试、电动组件、磁化强度测量等方向

Active Publication Date: 2022-04-01
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also incurs the cost of installing a new motor and the cost of disposing of a faulty motor

Method used

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  • Method for diagnosing magnetization faults of permanent magnet motors
  • Method for diagnosing magnetization faults of permanent magnet motors
  • Method for diagnosing magnetization faults of permanent magnet motors

Examples

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Embodiment Construction

[0044] Reference will be made in detail to various examples of the disclosed method illustrated in the accompanying drawings and described below. However, the disclosed methods can be implemented in various forms and are not limited to the examples described below.

[0045] Unless expressly stated to the contrary, the use of the words "comprise", "comprising" or "comprising" throughout the specification shall not be understood as excluding other elements, but as implying that other elements may be included.

[0046] The present disclosure relates to a method of diagnosing a magnetization fault of a permanent magnet motor, and more particularly to a method of diagnosing a magnetization fault capable of detecting a reverse magnetization state of a permanent magnet of the motor.

[0047] The motor may be an Interior Permanent Magnet Synchronous Motor (IPMSM), where permanent magnets are mounted on the rotor. North (N) poles and south (S) poles of permanent magnets are alternatel...

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PUM

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Abstract

The present invention provides a method for diagnosing a magnetization fault of a permanent magnet motor. The method includes calculating a resolver offset value for offset correction of a resolver installed at the electric motor; calculating a correction offset, that is, a difference between the calculated resolver offset value and a predetermined reference value, so that the comparing the calculated correction deviation with a tolerance; when the calculated correction deviation is greater than the tolerance, comparing the difference between the calculated correction deviation and a predetermined phase difference of reverse magnetization of the permanent magnet with the tolerance; And when the difference between the calculated correction deviation and the predetermined phase difference of the reverse magnetization of the permanent magnet is equal to or smaller than the allowable error, it is determined that the permanent magnet motor is in the reverse magnetization state.

Description

technical field [0001] The present disclosure relates to a method of diagnosing a magnetization failure of a permanent magnet motor, and more particularly, to a method of diagnosing a magnetization failure capable of detecting a reverse magnetization state of a permanent magnet of the motor. Background technique [0002] A motor is used as a driving source for driving a new energy vehicle such as an electric vehicle (EV), a hybrid vehicle (HEV), or a fuel cell electric vehicle (FCEV). New energy vehicles can replace internal combustion engine vehicles. [0003] An interior permanent magnet synchronous motor (IPMSM) is used as an electric motor (for example, a driving motor), that is, a driving source of a new energy vehicle. [0004] New energy vehicles include inverter systems for driving and controlling electric motors. The resolver is used as a position sensor that detects the absolute angular position θ of the motor rotor for controlling the motor. [0005] After sync...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/34
CPCG01R31/34G01R35/00H02K11/20G01R25/04G01R33/1215
Inventor 车志完姜求培林在相林盛晔金永云
Owner HYUNDAI MOTOR CO LTD
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