永磁同步电机电阻的辨识方法
By measuring the motor's back electromotive force coefficient and winding voltage, combined with PI control, the resistance of the permanent magnet synchronous motor can be identified in real time. This solves the problem of the inability to identify resistance in real time in existing technologies, and achieves efficient resistance identification during motor operation, adapting to temperature changes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SICHUAN AOKU TECH CO LTD
- Filing Date
- 2022-08-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies cannot identify resistance in real time during permanent magnet synchronous motor operation, and the model reference adaptive method has a large computational load and cannot adapt to the requirements of winding resistance changing with temperature.
By measuring the motor's back EMF coefficient and winding voltage, and combining PI regulation, the motor resistance is identified in real time. Using the relationship between back EMF and input voltage, an equation is constructed for resistance identification, and SVPWM and switch dead-time compensation are employed.
It achieves real-time resistance identification during motor operation, requires less computation, adapts to resistance temperature changes, and improves control accuracy.
Smart Images
Figure CN115347827B_ABST