基于无速度传感器方法的异步电动机PCH控制

Port-Controlled Hamiltonian Control of Induction Motors Based on Speed Sensorless Method

利用端口受控哈密顿(PCH)系统方法,采用基于异步电动机转矩误差信号的转速估计原理,提出了一种异步电动机无速度传感器PCH控制方法,利用电机给定电磁转矩和实际电磁转矩的误差信号实现对电动机转速信号的估计。在转速估计中,采用了PI控制,使得控制系统更为简单。最后,利用MATLAB建立仿真模型,通过仿真实验验证了该控制系统具有较好的静态和动态性能。

Using a novel control method of the Port Controlled Hamiltonian （PCH） system and speed estimation theory based on torque error signal of induction motor, a speed sensorless PCH control of induction motor was proposed. Error signal between the given magnetic torque and actual magnetic torque was utilized to attain the induction motor speed. Because PI controller was used, the structure of the speed sensorless control was very simple. Simulation results based on MATLAB 7. 1 demonstrate that the proposed control scheme is valid, and the dynamic and static performance are quite well.