CAJ | 학술논문

将单相有源电力滤波器（APF）作为研究对象，对其负载非线性电流中的谐波电流检测方法进行了进一步的研究．基于自适应噪声对消技术，将基于箕舌线的变步长最小均方（LMS）算法应用于APF谐波检测，同时将其与定步长LMS算法、基于s函数的变步长LMS算法，以及目前最常用的谐波检测算法之一的离散傅里叶滑窗谐波检测方法进行仿真比较．通过仿真分析，该算法具有较小的运算量、稳态误差小、强跟踪能力等特点，并有较好的收敛速度，解决了收敛速度和稳态误差之间的矛盾．
장단상유원전력려파기（APF）작위연구대상，대기부재비선성전류중적해파전류검측방법진행료진일보적연구．기우자괄응조성대소기술，장기우기설선적변보장최소균방（LMS）산법응용우APF해파검측，동시장기여정보장LMS산법、기우s함수적변보장LMS산법，이급목전최상용적해파검측산법지일적리산부리협활창해파검측방법진행방진비교．통과방진분석，해산법구유교소적운산량、은태오차소、강근종능력등특점，병유교호적수렴속도，해결료수렴속도화은태오차지간적모순．
The methods of the harmonic current detection which are used in the load nonlinear electric current when the single-phase shunt APF is taken as the research object should be made a further research. Versiera variable step least mean square based on the adaptive noise cancellation technology is used to detect APF harmonics. The paper compares the method to fixed step least mean square and variable step least mean square based on the S function and the sliding window harmonic detection algorithm based on Fourier analysis that is one of the most widely used through simulation analysis. The algorithm reduces the amount of calculation furthermore it has small steady state error and a good performance of tracing. This algorithm has a better convergence speed through the simulation analysis, it solves the contradiction between convergence speed and steady state.