CAJ | 학술논문

提出一种改进的有源电力滤波器（APF）的电源电流直接控制方法。通过检测负载电流，利用负载电流检测结果进行前馈补偿校正并提取其中的有功电流作为APF控制器的参考值。同时，通过电网电压前馈和系统解耦，把电源电流直接控制的APF数学模型简化成一阶惯性环节。相对于把负载电流作为干扰不进行检测的电源电流直接控制方法，所述方法的比例一积分控制器在理论上就能做到无静差跟踪，并且具有更好的动态响应。仿真和实验证明了所提方法的优越性。
제출일충개진적유원전력려파기（APF）적전원전류직접공제방법。통과검측부재전류，이용부재전류검측결과진행전궤보상교정병제취기중적유공전류작위APF공제기적삼고치。동시，통과전망전압전궤화계통해우，파전원전류직접공제적APF수학모형간화성일계관성배절。상대우파부재전류작위간우불진행검측적전원전류직접공제방법，소술방법적비례일적분공제기재이론상취능주도무정차근종，병차구유경호적동태향응。방진화실험증명료소제방법적우월성。
An improved supply current direct control scheme of active power filter (APF) is proposed. By detecting load current, the detect result can be used to feed-forward and extract the active load current as reference value for the APF controller. By using grid voltage feed-forward and system decoupling, the mathematical model is simplified to a first-order inertia model. The proportional-integral (PI) controller can track the reference value with no state error in contrast to the supply current direct control scheme of APF without load current detecting and have a better dynamic response. Simulation and experimental results show the correctness of the method. This work is supported by National High Technology Research and Development Program of China (863 Program) (No. 2007AA05Z230) and Forward-looking Orientation Program of China University of Petroleum (No. 2010QZ03).