一种新型的无传感器矢量控制研究

Research of a Novel Sensorless Vector Control

为了获得永磁同步发电机转子位置和转速的准确信息,并且克服传感器的不足,提出一种新型的无传感器矢量控制算法。该算法通过滑模观测器来获取转子位置和转子速度的信息,提出的观测器易于实现并对参数变化不敏感。为了简化系统设计过程,减少调节参数个数,用基于反推控制算法的新型速度调节器和电流控制器代替传统的PI速度调节器,该系统在保证准确性和稳定性的同时提高了速度跟踪性能。通过Matlab/Simulink仿真验证了提出算法的正确性和可行性。

In order to obtain the accurate information of PMSG＇ s （permanent magnet synchronous generator） speed and angle,and alleviate the shortcomings of the sensor,a new sensorless vector control algorithm was presented,which get the information of rotor by SMO（sliding mode observer）.The proposed observer is easy to implement and less sensitive to parameter variations.In order to simply the design procedure of system,and reduce the regulated paramaters,a new ASR and ACR was used based on Backstepping algorithm to replace PI controller,which guarantee the accuracy and stability of system,at the same time it improved the speed tracking performance.The validity and feasibility of presented algorithm is verified by Matlab/Simulink.