CAJ | 학술논문

针对传统矢量控制对双馈风力发电机参数的依赖性和传统直接功率控制策略的开关频率不固定问题，提出基于滑模变结构的双馈风力发电机直接功率控制策略，把滑模变结构控制和电压空间矢量脉宽调制技术相结合，并用转子电压直接控制双馈电机的有功功率和无功功率。在PSCAD仿真环境下搭建了其系统模型，实现了双馈风力发电系统最大功率点跟踪以及有功功率和无功功率的解耦控制。系统结果表明：该控制策略具有较好的参数鲁棒性和输出电能质量，验证了该直接功率控制策略的有效性和可行性。
침대전통시량공제대쌍궤풍력발전궤삼수적의뢰성화전통직접공솔공제책략적개관빈솔불고정문제，제출기우활모변결구적쌍궤풍력발전궤직접공솔공제책략，파활모변결구공제화전압공간시량맥관조제기술상결합，병용전자전압직접공제쌍궤전궤적유공공솔화무공공솔。재PSCAD방진배경하탑건료기계통모형，실현료쌍궤풍력발전계통최대공솔점근종이급유공공솔화무공공솔적해우공제。계통결과표명：해공제책략구유교호적삼수로봉성화수출전능질량，험증료해직접공솔공제책략적유효성화가행성。
In allusion to the dependence of traditional vector control on parameters of doubly fed induction generator and unfixed switching frequency of traditional direct power control strategy, a sliding mode variable structure-based direct power control strategy for doubly fed induction generator is proposed, in which the sliding mode variable structure control is integrated with voltage space vector pulse width modulation (SVPWM) technique and the active and reactive power of doubly fed induction generator are directly controlled by rotor voltage. A simulation model of the proposed control strategy is constructed in PSCAD environment to research the maximum power point tracking (MPPT) and decoupling control of active and reactive power of fed induction generation system. Simulation results show that the proposed control strategy possesses better parameter robustness and can ensure the quality of power output, and the effectiveness and feasibility of the proposed direct power control strategy are verified.