摘要
发电机有功功率、无功功率的解耦控制是变速恒频双馈风力发电系统的关键技术。分析了双馈异步发电机的动态数学模型,基于定子磁场定向的矢量控制方案,结合滑模控制与比例积分控制,得到一种有效的双馈风力发电机功率解耦控制策略。应用李雅普诺夫稳定性理论研究系统稳定性,建立了MATLAB/Simulink环境下系统的仿真模型。仿真结果表明,该控制方法能够很好地实现双馈发电机有功功率、无功功率的解耦控制,验证了该控制策略及变速恒频双馈风力发电机系统建模的正确性和有效性。
The decoupled control of active power and reactive power in doubly-fed induction generator（DFIG） is a key technique of variable speed constant frequency（VSCF） wind energy generation system.The dynamic mathematical model of a DFIG and the field-oriented vector transformation control scheme were analyzed.An useful method of independent active power and reactive power control was obtained by combing sliding mode control（SMC） and proportional-integral control（PI）.The system stability was analyzed with lyapunov stability theory.The simulation model was built in MATLAB/Simulink environment.The simulating results showed that the control strategy can realize active power and reactive power decoupled control of the DFIG efficiently,and verified the validity and correctness of modeling and control of VSCF DFIG.
出处
《电机与控制应用》
北大核心
2010年第4期39-43,共5页
Electric machines & control application
基金
国家自然科学基金重点项目(60534040)
广东省教育厅专项重点实验室(IDSYS200701)
863计划项目(2007AA05Z244)
关键词
双馈异步发电机
矢量控制
滑模解耦控制
doubly-fed induction generator（DFIG）
vector control
sliding mode decoupled control
