一种基于电机功率模型的自适应过调制控制方法
By constructing a motor power model and dynamically adjusting the reference voltage compensation, the problems of current harmonics and torque pulsation in the traditional permanent magnet synchronous motor control system are solved, achieving more efficient voltage utilization and torque enhancement, and improving the dynamic and steady-state performance of the motor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN RES INST OF ELECTRIC SCI
- Filing Date
- 2023-09-19
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional permanent magnet synchronous motor control systems suffer from severe current harmonics, torque ripple, and redundant voltage extension, making them unable to meet the requirements for extreme speed and extreme torque output, especially in high-end industrial applications.
An adaptive overmodulation control method based on a motor power model is adopted. By calculating the motor torque and speed to construct a power model, the reference voltage compensation is dynamically adjusted to reduce the redundant voltage expansion during overmodulation operation and achieve adaptive overmodulation depth adjustment.
It improves the utilization rate of DC bus voltage, enhances the torque capability of the motor in the weak magnetic region, reduces torque harmonics in steady state, and improves dynamic and steady-state performance.
Smart Images
Figure CN117220547B_ABST