高速永磁同步电机无位置传感器控制策略自适应切换方法
By estimating the rotor electrical angle using pre-positioning and sliding mode observer algorithms, and constructing an adaptive attenuation factor to adjust the current reference value, the problems of current surge and speed fluctuation during the switching process of high-speed permanent magnet synchronous motors are solved, and more stable control switching is achieved.
CN122092741BActive Publication Date: 2026-07-17TIANJIN POLYTECHNIC UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TIANJIN POLYTECHNIC UNIV
- Filing Date
- 2026-04-27
- Publication Date
- 2026-07-17
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Figure CN122092741B_ABST
Abstract
本发明涉及电机控制技术领域，提供一种高速永磁同步电机无位置传感器控制策略自适应切换方法，包括配置电机转子I‑f开环控制的q*轴参考电角度，在I‑f开环控制运行期间，基于滑模观测器算法实时估计的转子电角度与q*轴参考电角度间的角度偏差计算自适应衰减因子，进而计算q*轴电流参考值的下降斜率，根据q*轴电流参考值的下降斜率构建q*轴电流参考值变化律，根据q*轴电流参考值变化律，调节q*轴电流参考值；根据q*轴电流参考值调节q*轴电流，根据q*轴电流调节角度偏差，实现I‑f开环控制向无位置传感器闭环控制之间的平滑切换，本发明可减小切换过程中的电流冲击与转速波动，缩短切换时间。
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