ZERO AVERAGE CURRENT ERROR CONTROLLED POWER-FLOW FOR AC-DC POWER CONVERTERS

Unity and controlled power factor ac-dc power converters require a current control technique with zero average current error (ZACE) in each switching period, Acting on the current error signal alone, a ZACE controlled converter offers complete real and reactive power how control with negligible low order current harmonics, a narrow switching frequency band, and relative immunity to de link or ac line voltage harmonics. Slope-generated hysteresis, a new ZACE current control method is introduced, Simulation and experimental results in a three phase converter are presented.