基于黄金分割搜索法的IPMSM最大转矩电流比控制

Maximum Torque Per Ampere Control for IPMSM Based on Golden Section Search Method

在矢量控制理论的基础上,研究了内嵌式永磁同步电机(IPMSM)基于黄金分割搜索法实现最大转矩电流比控制(MTPA)的方法。该方法利用对理论最优电流矢量角表达式进行多项式拟合所得值作为搜索初始值,进而从该值开始通过黄金分割法搜索最优电流矢量角,从而实现IPMSM的最大转矩电流比最优控制。仿真结果表明:该控制算法与传统进退搜索法相比,具有更快搜索速度,对电动机参数和工作状态变化具有较强的鲁棒性。

The golden section search method of maximum per ample control in interior permanent magnet synchronous motor were studied based on the vector control.The value which was calculated by the polyfit expression of the optimal current vector angle , was used as the initial search current vector angle , and then from this value starts golden section search to obtain the optimal current vector angle , The most optimal con-trol performance of MTPA was achieved by this method in IPMSM.The simulation results illustrate that：this control strategy possesses a higher search speed , comparing with those traditional control strategies using back and forth search method.it is particularly robust to the change of working condition and motor parame-ters.