应用于高速永磁同步电机的改进最大转矩电流比控制研究

Improved maximum torque per ampere control for HS-PMSM

针对高转速永磁同步电机转子转动惯量小、定子电感小且易受运行环境干扰的问题,在考虑其电机电感等参数影响的情况下,对最大转矩电流比控制进行了研究,提出了一种在电流矢量角度中注入高频小信号、基于滑动离散傅里叶提取最大转矩电流比工作点的改进方法。首先,对注入高频小信号角度的输出电磁转矩进行了泰勒公式展开。然后,基于滑动傅里叶方法对其进行了信号处理,并结合常规PI调节后得到了改进最大转矩电流比控制时的电流矢量角。最后,通过Matlab仿真软件建模仿真对其结果进行了验证。研究结果表明:该改进最大转矩电流比控制能在电机参数的扰动下,具有良好的抗扰性能,提高了系统的控制性能和运行效率。

Aiming at the problem that the rotational inertia of the high speed permanent magnet synchronous motor is small,the stator inductance is small and it is easy to be disturbed by operating environment,the maximum torque current ratio control considering the influence of the motor inductance and other parameters was studied.An improved method of injecting a high-frequency small signal into a current vector angle based on a sliding discrete Fourier extraction maximum torque-to-current operating point was proposed.Firstly,the output electromagnetic torque of the input high frequency small signal angle was extended by Taylor formula.Then signal processing was carried out based on the sliding Fourier method,and combined with conventional PI regulation,the current vector angle was obtained when improving the maximum torque current ratio control.Finally,the simulation results were verified by Matlab simulation software.The results indicate that the improved perturbation and maximum torque in the motor parameters,which has good anti disturbance performance,so as to improve the control performance and the efficiency of the system.