Adaptive Current Vector Angle Tracking MTPA Control Method of Interior PMSM

针对同步电机动态负载过程中电感参数非线性变化的问题，本文提出一种用于同步电机最大转矩电流比有效控制的自寻优方法。首先，在理论最优点附近设计了电流矢量角差值模型，用于在前向回路中对角度进行补偿。其次，考虑到动态过程中直交轴电感的非线性变化，在不考虑剩磁变化的条件下，进一步设计了等效参数模型，并给出了控制规则，旨在实时控制工作点保持在最优工作点附近，最后文中给出了解析仿真验证，证明了设计方法的有效性。Aiming at the problem of non-linear variation of inductance parameters during dynamic loading of PMSM, a self-optimization method is developed for the effective control of MTPA Control of PMSM in this paper. First, the current angle difference is designed to compensate for the forward loop. Secondly, considering the non-linear variation of orthogonal axis inductance in dynamic processes, an equivalent model is further designed without considering the variation of remanent magnetism, and the relative law is given, aiming to maintain real-time control of the working point near the optimal working point. Finally, the analytical simulation verification is given in the paper to prove the effectiveness of the design method.