HYSTERESIS CURRENT CONTROL (HCC) BASED ON THE INSTANTANEOUS POWER THEORY (P-Q THEORY) FOR THE THREE-PHASE SHUNT ACTIVE POWER FILTER

Abstract

Eletrical loads nowadays are normally integrated with a static converter that
has thyristor or commuting Insulated Gate Bipolar Transistor (IGBT) which can
change the current and potential’s waveforms. That is called non-linears loads
and it generates harmonics on the circuit. Harmonics can cause unexpected loss,
cause the vibration of electrical equipment and cause errors for the
measurements. They can also jam the electronic equipment in the power system
and reduce the quality of the electric power. In order to reduce the harmonic’s
influence, an active power filter needs to be slung in front of a group of loads
which are used to reduce the high order harmonics and compensate the reactive
power through a voltage source inverter that can reduce or compensate the
current of the circuit. Further to the study of the control design for active filter, in
this paper, the authors continue to present a study on the design of Hysteresis
Current Control (HCC) for the three-phase shunt active power filter.