Novel PFC converter suitable for engine-driven generator-interactive three-phase power systems

In recent years, discontinuous current mode control implementation for thre e-phase AC-DC converters with active power filtering and power factor corre ction schemes has attracted special interest in industrial and telecommunic ation energy systems. This control strategy has practical advantages since it has a simple and cost-effective configuration. However, for emergency en gine-driven generators, most three-phase PFC converters with discontinuous current mode control have not been effectively adopted in practice because the conventional PFC circuit configuration has some disadvantages for engin e-driven generators connected to three-phase AC mains. A new conceptual PFC converter circuit and system configuration operating with discontinuous cu rrent mode control and suitable for engine-driven generators connected to t hree-phase AC mains is proposed. The operating principle and unique feature s of the proposed PFC converter is discussed in terms of harmonic currents and PFC converter performance evaluations on the basis of simulation result s from two types of conventional three-phase PFC converters.