基于SVM P-DPC控制策略的研究

Research on the control strategy based on SVM P-DPC

为提高风力双馈电机(Doubly-Fed Induction Generator,DFIG)发出的电能质量,文章针对转子侧变换器提出了一种基于空间矢量调制(Space Vector Modulation,SVM)的预测(Predictive,P)直接功率控制(Director Power Control,DPC)的SVM P-DPC策略。该控制策略通过预测模型能够预测出消除下一个采样周期中功率偏差所需要的转子励磁电压,并结合SVM技术,实现对DFIG输出功率的控制。利用Simulink仿真平台,搭建该控制系统的仿真模型,并在2.2 k W的DFIG实验平台上进行实验验证。仿真及实验结果表明,该控制策略动态响应快,鲁棒性强,双馈电机发出的功率稳定。

To improve the power quality of doubly fed induction generator. A novel SVM P-DPC strategy based on the prediction of space vector modulation is proposed for the rotor side converter in this paper. The control strategy can be used to calculate the rotor side voltage which can eliminate the power deviation through the prediction model in the next sampling period, and combine with space vector modulation technology, then the power control of doubly fed induction generator is realized. Using the Simulink simulation platform, the simulation model of the control system is built, and the experimental verification is carried out on the 2.2 kW DFIG experimental platform. The simulation and experimental results show that the control strategy has fast dynamic response and strong robustness and the power emitted by doubly fed induction generator is stable.