新能源汽车永磁同步电机最大转矩电流比控制

Maximum Torque per Ampere Control Method of Permanent Magnet SynchronousMotor for New Energy Vehicles

考虑到目前新能源汽车使用的永磁同步电机最大转矩电流比控制方法存在受参数影响较大的问题,提出了一种基于高频信号注入的永磁同步电机最大转矩电流比控制新方法。首先,介绍了常规的最大转矩电流比控制方法及其存在的问题。其次,详细介绍了高频信号注入的最大转矩电流比控制方法的基本原理和实现方法,包括带通滤波器和低通滤波器的设计方法等。最后,基于Matlab/Simulink仿真软件建立了仿真模型,并对所提方法进行了验证。此外,进一步进行了硬件平台实验,其实验结果也验证了所提方法的正确性,能够为新能源汽车永磁同步电机及相近使用场合的电机控制和应用提供参考。

Considering that the conventional maximum torque per ampere control method of permanent magnet synchronous motor used in new energy vehicles is greatly affected by parameters,a new maximum torque per ampere control method for permanent magnet synchronous motor based on high frequency signal injection was proposed.Firstly,the conventional maximum torque per ampere control method and its problems were introduced.Secondly,the principle and realization of the proposed maximum torque per ampere control method based on high frequency signal injection were introduced in detail,including the design method of bandpass filter and low pass filter.Finally,the simulation model was established based on Matlab/Simulink software,and the proposed method was verified by simulation results.In addition,the experimental results based on hardware platform also verified the correctness of the proposed method,which can provide a reference for the control and application of permanent magnet synchronous motor in new energy vehicles and similar occasions.