逆变器非线性运行的同步电动机无源性控制研究

通过严格的理论分析和数学计算,建立了同步电动机在同步坐标系中E-L方程形式的数学模型,给出了逆变器的非线性模型。以这些模型为基础,研究并设计了在负载转矩(转速、位置)为任意时变未知情形下同步电动机的无源性渐近跟踪控制器。该控制器在实现机械控制目标的同时实现了对磁场方向和磁场幅值的控制,即同时实现了磁场矢量控制。仿真结果表明,该无源性控制器可以很好地实现转速和位置的跟踪控制,具有很高的动态控制性能和鲁棒特性。

Research of Passivity Control of Synchronous Motor under Nonlinear Running of Inverter

By strict theoretical analysis and calculation,a mathematical model of synchronous motor of E-L equation in synchronous rotating coordinates was established and nonlinear model of inverter was given.Based on the models,a passivity asymptotical tracking controller of synchronous motor was designed in case of time-varying and unknown load torque(rotation rate and location).The controller realizes mechanical control target in meanwhile realizes control of magnetic-field direction and magnetic-field amplitude,namely realizes magnetic-field vector control.The simulation result showed that the passivity controller can realize tracking control of rotation rate and location,which has high dynamic control performance and robust.