Title :
Harmonic detection for three-phase circuit based on the improved analog LMS algorithm
Author :
Zhang, Junmin ; Liu, Kaipei
Author_Institution :
South-Central Univ. For Nat., Wuhan
Abstract :
Based on the adaptive algorithm, an improved algorithm for LMS estimation in harmonic detection is presented in this paper. And the APF based on LMS algorithm can be used under the conditions of three-phase unbalanced and nonlinear loads, can be applicable to detect harmonic, reactive and negative sequence currents respectively or the sum of ones. At the same time the smaller error and better convergent speed than that in single-phase can be obtained.
Keywords :
active filters; analogue circuits; harmonic analysis; least mean squares methods; power filters; active power filters; adaptive algorithm; analog LMS algorithm; harmonic detection; negative sequence currents; nonlinear loads; reactive sequence current; three-phase circuit; three-phase unbalanced load; Active filters; Adaptive filters; Band pass filters; Circuits; Filtering theory; Frequency; Least squares approximation; Low pass filters; Power harmonic filters; Power system harmonics;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
