无刷双馈调速电机无源性分析及自适应控制

应用无源性控制理论从能量角度研究了无刷双馈电机控制系统.建立了无刷双馈电机的欧拉方程,并将其分解为电气和机械两个无源子系统的反馈并联,以此说明在设计控制器时只需考虑电气子系统,简化了控制算法.设计了电机的转矩和转速控制器.在此基础上,考虑电机功率及控制绕组电阻在运行中可能发生变化.设计自适应控制器以提高系统的鲁棒性.仿真结果表明此控制策略能快速地跟踪速度给定.动静态响应能力较好,且具有全局稳定、系统鲁棒性好的特点.

Passivity analysis and adaptive control of brushless doubly-fed machines for adjustable speed drives

A passivity-based control(PBC) strategy with energy consideration for brushless doubly-fed machines (BDFM) is proposed. The model of BDFM described by Euler equations is also presented. The system is decomposed into two feedback interconnected passive subsystems, an electrical subsystem and a mechanical subsystem. The electrical subsystem is the unique one to be considered in designing the controllers for the torque and speed of BDFM, thus, simplifying the control algorithm. In addition, we also consider in the design the machine power and the resistance variation in the control winding during operation, thus developing an adaptive controller which makes the system robust in performance. Simulation results show that the system output tracks the reference speed quickly, with desirable static and dynamic performance, global stability as well as high robustness.