Laboratory implementation of a hybrid series active power filter system part II: Series active filter designing

Practical and simulation studies of a hybrid system of series active power filter and shunt passive filter is presented in this two-part paper. Whereas part 1 concerns dimensioning, designing and starting up of the shunt passive filter, this second part is dedicated to dimensioning, conceiving and implementing of the series active filter. The works consist mainly to realize a two-level full bridge voltage inverter based on IGBT's. The respective overvoltage circuit and average control circuit are also conceived. The control is conducted in an open loop, the reference signals are identified using the p-q theory concept, and for launching the gating signals, the carrier-based PWM method is employed. The implementation of the whole system gave satisfactory results and improved the quality of power in the main utility side.