一种稳定的高速永磁同步电机V/F控制方法

A Stable V/F Control Method of High-speed Permanent Magnet Synchronous Motor

研究了一种高速永磁同步电机(HSPMSM)无位置传感器V/F控制方案。该方案设置V/F控制曲线时考虑定子电阻压降在不同的频率段对定子电压分段补偿,并针对传统开环V/F控制下永磁同步电机(PMSM)因转子无阻尼绕组导致的固有不稳定性,基于PMSM转子小扰动数学模型分析,设计了逆变器频率与输出功率扰动量按比例关系调制的稳定环,通过极点配置方法调节稳定环的防振荡因子,增强了驱动系统的稳定性。Matlab/Simulink仿真和实验结果表明该控制方案加速性能好,能够驱动一台200 kW的PMSM由静止快速启动加速至20 000r·min^(-1)并稳定运行,抗负载冲击能力强,运行稳定性好,从而验证了该方案的可行性和有效性。

A high-speed permanent magnet synchronous motor（HSPMSM） sensorless V/F control method is presented.In this scheme,the stator voltage is compensated at different frequency segment when set up the V/F curve taking the stator resistance voltage drop into account,a stabilizing loop of the inverter frequency is modulated proportional to the input power perturbations is designed based on the analysis of permanent magnet synchronous motor（PMSM） rotor small disturbance mathematics model, the stability of PMSM drive system is enhanced by regulating properly the antioscillation factor according to the pole placement technology.Simulations based on Matlab/Simulink and experimental results shows that the acceleration performance is good,a 200 kW PMSM can start quickly and accelerate from zero to 20 000 r·min^（-1） then operate steadily,ability of resistance to impact load is strong,operation stability is good,the feasibility and validity of this method is verified.