摘要
通过分析滑模观测器法和脉振高频电压信号注入法辨识转子转速和位置的原理以及性能,提出一种可以在宽速域内实现永磁同步电机无传感器控制的复合控制方法。对两种方法分别在宽速域内非线性加权,简化了传统的加权滞环切换策略,实现了两种方法的平滑过渡,克服了滑模观测器法和脉振高频电压信号注入法在不同速度区间内的局限性。通过仿真验证了该复合控制法能在宽速域范围内辨识转子位置和速度,两种方法能在零低速和中高速之间平滑过渡,系统拥有良好的动态性能和较小的稳态误差。
Based on the analysis of the principle and performance of estimating the rotor speed and position of HF signal injection and sliding-mode observer,a wide-speed-range sensorless control scheme for PMSM is presented.The two algorithms are weighted nonlinearly at wide speed range.The nonlinear weighting strategy not only simplifies the traditional hysteresis weight switch-over strategy but also makes the two algorithms switch soft.The hybrid control scheme overcomes the limitation of HF signal injection and sliding-mode observer at different velocities.Simulation results show that the hybrid control scheme can detect the rotor position and speed quickly and accurately,and realize the soft switching between zero-low speed and medium-high speed,improving the stability and dynamic performance of the system.
作者
周学超
刘鹏
ZHOU Xue-chao;LIU Peng(School of Electromechanical and Automotive Engineering,Yantai University,Yantai 264005,China)
出处
《烟台大学学报（自然科学与工程版）》
CAS
2023年第1期79-87,共9页
Journal of Yantai University(Natural Science and Engineering Edition)
基金
国家自然科学基金资助项目(21602250)
烟台市科技创新发展计划(2020XDRH105)。
关键词
永磁同步电机
无传感器控制
非线性加权
permanent magnet synchronous motor
sensorless control
nonlinear weighting
