Method and device for controlling the torque of an electric machine
CN116278801BActive Publication Date: 2026-06-23CHINA FAW CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA FAW CO LTD
- Filing Date
- 2023-03-24
- Publication Date
- 2026-06-23
AI Technical Summary
Technical Problem
Electric drive systems experience reduced motor torque output and low control efficiency due to temperature rise during high-angle slope starts or under extreme operating conditions.
Method used
By acquiring the motor speed, its operating status is determined, and the motor torque is derating controlled based on the thermal accumulation data, including thermal accumulation time normalization and multi-condition judgment, to ensure that the motor operates within a safe temperature range.
Benefits of technology
It improves the control efficiency of motor torque, avoids the degradation of motor performance due to temperature rise, and ensures stable operation of the motor under extreme conditions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116278801B_ABST
Abstract
The application discloses a motor torque control method and device. The method comprises the following steps: obtaining the rotating speed of the motor; determining the working state of the motor based on the rotating speed of the motor, wherein the working state comprises whether the motor is in a locked-rotor state; determining the heat accumulation data corresponding to the working state of the motor, wherein the heat accumulation data is used for representing the heat generation degree of the motor; and reducing the torque of the motor based on the heat accumulation data. The application solves the technical problem of low control efficiency of the motor torque.
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