Premium
Combined system of a series active filter and a shunt passive filter—an optimum design of the shunt passive filter
Author(s) -
Fujita Hideaki,
Akagi Hirofumi
Publication year - 1993
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391130208
Subject(s) - active filter , filter design , voltage controlled filter , electronic filter topology , control theory (sociology) , butterworth filter , electronic filter , adaptive filter , engineering , electronic engineering , high pass filter , prototype filter , shunt (medical) , filter (signal processing) , low pass filter , computer science , voltage , electrical engineering , medicine , control (management) , artificial intelligence , cardiology
The combined system of a series active filter and a shunt passive filter that is proposed by the authors has the ability to eliminate a major disadvantage of shunt passive filters, namely, harmonic amplification. The series active filter needs a much smaller kVA rating than a conventional shunt active filter, and as a result, the combined system has good filtering characteristics and high efficiency. This paper presents an optimum design of the shunt passive filter that makes possible a great reduction in the required kVA rating of the series active filter. It can minimize the peak voltage across the series active filter and reduce the required kVA rating of the filter to 60 percent. A computer simulation geared to practical applications of large three‐phase. twelve‐pulse thyristor rectifiers is used to compare the compensation characteristics of the optimized system with those of a combined system that uses a conventional shunt passive filter. Experimental results obtained with a laboratory model of the filter corroborate the design approach.