电动机驱动装置、电动机驱动方法及计算机可读取介质
By detecting the temperature of the capacitor, power module, and housing in the motor drive unit, and combining this with the command torque, a suitable torque limiting rate is determined, thus solving the problem of incomplete thermal protection in the motor drive unit and achieving more reliable thermal protection and fault prevention.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- NIDEC ELESYS CORP
- Filing Date
- 2021-03-31
- Publication Date
- 2026-07-17
AI Technical Summary
In the prior art, the thermal protection measures of the inverter circuit in the motor drive device fail to fully consider the impact of temperature rise in capacitors, power modules and housing on the motor drive device, and the magnitude of command torque has not been fully considered on the thermal protection, resulting in unreliable thermal protection.
By installing a temperature detection unit in the motor drive unit, the temperature of the capacitor, power module, and housing is detected. Based on these temperatures and the command torque, an appropriate torque limiting rate is determined to control the command torque of the motor and prevent malfunctions.
It achieves more reliable thermal protection for motor drive devices, preventing failures, providing enhanced protection, especially when the command torque is large, and maintaining stable and continuous thermal protection effect when the temperature changes.
Smart Images
Figure CN115149885B_ABST