基于精确线性化解耦的永磁同步电机空间矢量调制系统

从永磁同步电机的定子磁链模型出发，应用精确线性化理论，实现永磁同步电机输入输出线性化与解耦。将永磁同步电机动态解耦成二阶线性转速子系统和一阶线性磁链子系统，结合磁链扇区判断方法和线性化解耦后的实际系统输入来确定目标空间电压矢量，实现了永磁同步电机调速系统的转速和磁链动态解耦控制。仿真和实验结果表明，基于精确线性化解耦的永磁同步电机空间矢量调制系统具有理想的速度跟踪性、良好的鲁棒性和低速性。

Space Vector Modulation System for Permanent Magnet Synchronous Motor Based on Precision Linearization Decoupling

A precision linearization method to achieve input-output linearization and decoupling control of permanent magnet synchronous motor based on stator flux model is presented. The permanent magnet synchronous motor is decoupled into second-order linear speed subsystem and first-order linear flux subsystem. The aim space voltage vector is ascertained by combining sector judgment of stator flux with the practical system inputs after linearization and decoupling. The system is decoupled into two linear subsystems,flux and rotor speed,which realizes the completely dynamic decoupling for permanent magnet synchronous motor speed control system. The simulation and experiment results have indicated that the space vector modulation system for permanent magnet synchronous motor based on precision linearization decoupling has the ideal speed tracking performance,the satisfactory robustness and low speed capability.