双馈电机无速度传感矢量控制调速系统的研究

提出了一种新型的基于转子力矩电流反馈机制的双馈电机无速度传感器矢量控制方案以实现高性能低成本双馈电机调速系统。该方案通过测量转子侧电压和电流，实时计算出电机转子力矩分量，通过与电机给定转子力矩电流分量比较，得出转差频率的补偿值，并用于矢量控制系统。该方案计算工作量较小，且仅需测量转子侧的电压和电流作为反馈量。文中从理论上分析了这种控制方式的工作机理，与传统矢量控制系统的异同点，并提出了具体的实现方式。理论分析和数字仿真试验证明了该方案的可行性。

Research on speed sensorless vector control of double fed induction machine

Based on feedback of the rotor torque current, a new type of speed sensorless control for double fed induction machine was proposed, which can be used for low cost high performance double fed induction machine variable speed system. The actual torque current of rotor calculated from voltage and current of rotor side was compared with given torque current of rotor. The compared result was used to compensate the slip frequency, which can be used in vector control system. The mechanism of this method and the difference from traditional method was analyzed. The results show the method has some advantages in calculations and practice.