A novel circuit topology of three-phase active power filtering-based converter operating at discontinuous current mode control scheme

The discontinuous current mode control scheme for AC-DC converter with active power filtering function and power factor correction has widespread use for single phase input power supplies, because this control scheme has practical advantages of simple configuration and cost-effectiveness. But it has not been practically adopted for three phase input power supplies because the characteristics of conventional control scheme have some disadvantages for three phase AC mains. Thus, to improve these disadvantages, a new circuit configuration with a discontinuous current mode control scheme suitable for three phase AC mains is proposed by the authors. This paper presents an operating principle and unique features of the proposed three phase active AC/DC converter topology on the basis of simulation results.