REASERCH ON THE TECHNIQUE OF ACTIVE POWER FACTOR CORRECTION AND ACTIVE FILTER
Abstract
Active power factor correction technique uses power electronic switching to cancel the harmonic currents from a nonlinear load. So that the current being supplied from input line is sinusoidal. It was analysed the current research situation of correction technology for Power Factor Correction (PFC), and summed up the progress in three-phase PFC especially illustrated the topologies, applications of single-switch three-phase PFC on the basis of this, pointed out the developing trends. This paper analyses relationship between the power factor and input current distortion of the inverter power source. A three-phase configuration of a new power factor correct circuit that makes use of continuous input current is suggested. Continuous sinusoidal input current is achieved by the average current mode control technique.
Key words: three phase power factor correction, active filter, current harmonic