CAJ | 학술논문

能否快速准确检测出三相电力系统中谐波电流是决定有源滤波器整体滤波性能的关键。基于瞬时无功功率的谐波电流检测理论，提出了一种改进的自适应滤波器谐波检测算法，通过构造步长因子与误差信号的非线性函数，调整步长参数，使权向量达到最优，在确保稳态误差的前提下，提高了系统的收敛速度。仿真实验验证了该算法的正确性和有效性。
능부쾌속준학검측출삼상전력계통중해파전류시결정유원려파기정체려파성능적관건。기우순시무공공솔적해파전류검측이론，제출료일충개진적자괄응려파기해파검측산법，통과구조보장인자여오차신호적비선성함수，조정보장삼수，사권향량체도최우，재학보은태오차적전제하，제고료계통적수렴속도。방진실험험증료해산법적정학성화유효성。
Fast and accurate detection of harmonic currents in the three-phase power system is the key element that determines the integrative filtering performance of active power filter.An im-proved automatic spatial filtering for harmonic detection algorithm based on the instantaneous re-active power for harmonic current detection theory is proposed.By constructing a nonlinear func-tion between the step factor and the error signal,and adj usting the step size parameters,the weight vector is optimized and under the premise of steady-state error performance,the conver-gence speed of the system is thus improved.Simulation experiments demonstrate that the pro-posed harmonic current detection algorithm is correct and effective.