基于定子电阻补偿的直接功率控制

Direct Power Control System Strategy Based on Stator Resistance Compensation

直接功率控制比矢量控制、直接转矩控制这两种控制方法控制效率要高,但稳定性却不是很理想,定子电阻的变化是导致稳定性降低的一个重要原因。本文提出了一种基于定子电阻补偿原理增加系统稳定性的方案,通过双馈电机直接功率控制的仿真模型及风力发电实验系统验证了这种方案能有效增加系统的稳定性,且容易实现。

The dynamic state respond of DPC is move effective compared with the other two strategies, VOC and DTC, but the stability is not perfect, stator resistance variation is an important factor for the decrease of stability. In this paper, a scheme based on stator resistance compensation principle is proposed to enhance the stability of the system. DPC system is researched by simulation model, and the results show that scheme can enhance the stability of DPC system, and is easy to implement.