Performance analysis of fixed shunt passive filters for harmonic mitigation

This paper presents study of harmonics and its significant effect on power system regarding the harmonic distortion caused by non-linear load such as adjustable speed drives, rectifier circuit and computers. Power quality improvement can be done effectively by using passive and/or active filter in series or shunt with the load. Although performing effectively, active filter are not cost efficient. Traditional passive filter are good alternative instead. This paper analyses performance of fixed shunt passive filter which is connected to three phase thyristor converter fed R-L load and hence required different values of reactive power as value of firing angle for thyristors is varied.