CAJ | 학술논문

针对微网中永磁同步风力发电并网系统在风速变化时引起的电压波动问题，同时为减小系统的复杂度，提出一种自然坐标系下的准滑模控制策略。该系统采用背靠背结构的可控电路，且利用准滑模控制代替传统的滑模控制。与传统方法相比，自然坐标系下的准滑模控制省去了相位检测、锁相环、解耦等环节，减小了上述环节产生的误差，提高了系统的稳定性；而加快系统的响应速度，在提高微网中风力发电系统能量转换效率的同时优化了发电机的性能。最后，在MATLAB/Simulink软件搭建风力发电并网控制系统，其仿真结果验证了所提出的控制策略的可行性和有效性。
침대미망중영자동보풍력발전병망계통재풍속변화시인기적전압파동문제，동시위감소계통적복잡도，제출일충자연좌표계하적준활모공제책략。해계통채용배고배결구적가공전로，차이용준활모공제대체전통적활모공제。여전통방법상비，자연좌표계하적준활모공제성거료상위검측、쇄상배、해우등배절，감소료상술배절산생적오차，제고료계통적은정성；이가쾌계통적향응속도，재제고미망중풍력발전계통능량전환효솔적동시우화료발전궤적성능。최후，재MATLAB/Simulink연건탑건풍력발전병망공제계통，기방진결과험증료소제출적공제책략적가행성화유효성。
Due to the changes of wind speed, the output voltage of a permanent magnet synchronous for grid-connected-wind power system in micro-grid fluctuates largely, and in order to reduce the complexity of the system, a pseud-sliding control strategy of the natural coordinate system is pro-posed. To achieve above objectives, firstly the grid-connected-wind power system of micro-grid utili-zes a fully-controlled back-to-back circuit. Secondly, a pseud-sliding mode control is applied in-stead of the traditional PI control in the wind side. Compared with the traditional method, the pseud-sliding control strategy of the natural coordinate system can achieve the same performance without phase detecting, phase lock loop, and rotating transformation. So the error caused by above-men-tioned steps is decrease and the stability of the system is improved. The pseud-sliding mode also ac-celerates the response speed of the system, and improves the energy efficiency of the wind power generation system by optimizes generator performance. The grid-connected wind power system is built in MATLAB/Simulink. And simulation results verify the effectiveness and feasibility of the pro-posed control method.