无速度传感器转子电流定向双馈电机的矢量控制调速系统

Speed-variable Vector Control System of Doubly Fed Motor without Speed Sensor Based on Rotor Current Oriented

本文提出了一种转子电流定向的双馈电机矢量调速系统 ,采用转子电流进行速度辩识 ,克服了传统方法中用磁链辩识速度在同步速附近存在死区的问题。文中介绍了该系统的基本原理及组成 。

In this paper,a vector control method of rotor current oriented for doubly fed motor is presented.Usually the flux linkage is used to calculate the speed,which makes the system have relatively large“blind area”at the synchronization speed.In this system,the rotor current is used to solve the problem above- mentioned.The basic principle and structure are introduced, and finally the system simulation and experiment results are presented in the paper.