摘要
双馈异步风力发电机DFIG(doubly-fed induction wind generator)的运行控制本质是对励磁变流器的控制。为了简化控制算法和提高控制系统响应速度,该文提出了恒功率和无差拍联合控制。该方法通过瞬时功率恒定原理产生三相电流指令值,再利用无差拍控制原理即可计算出控制量。此方法兼具恒功率控制易于设计和无差拍快速响应的优点,在Matlab环境下建立恒功率和无差拍联合控制仿真模型。仿真结果表明,该控制方法在不对称故障下能有效地抑制直流电压纹波分量。
The operation control essence of doubly-fed induction wind generator （DFIG） is the control of excitation converter.In order to simplify the control algorithm and improve the response speed of control system,a constant power and deadbeat combination control strategy was proposed in this paper.This control strategy produced three-phase current instruction values by instantaneous power constant principle,and then the control volume was calculated by deadbeat control.The control strategy has the advantages of easy design and rapid response.The simulation model was built in Matlab and the results in asymmetric fault show that the control strategy can effectively retrain the DC voltage ripple component.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2014年第4期25-29,共5页
Proceedings of the CSU-EPSA
关键词
风力发电
变速恒频
不对称故障
恒功率无差拍联合控制
不平衡控制
wind power generation
variable speed constant frequency
asymmetric fault
constant power and deadbeat combination control
imbalance control
