摘要
分两种情况(有源滤波器同时补偿谐波和无功、单独补偿谐波)对基于瞬时无功功率的i_p-i_q法、单位功率因数法和自适应滤波法3种检测方法进行了仿真研究,并给出了稳态和暂态的仿真波形。MATLAB仿真结果表明,UPF法适用于同时补偿谐波和无功电流的场合;对于只需要补偿谐波电流的场合,基于瞬时无功功率的i_p-i_q法能较快地进入稳态,而自适应滤波法则能及时地响应负载电流的突变。
Harmonic currents detecting circuit is important to active power filter. Simulation researches were carried out in two cases（compensating harmonic and reactive currents both or harmonics only）for three methods,i.e, ip-iq detecting method based on instantaneous reactive power, self-adaptive detecting method and UPF （Unity Power Factor）detecting method,in both steady and transient states. The simulation results indicate that UPF is the best choice in condition of detecting harmonic and reactive currents at the same time,and when detecting harmonic currents only,ip-iq method has the best stability while self-adaptive method has the best performance for transient load.
出处
《机电一体化》
2009年第8期66-70,共5页
Mechatronics
