| Abstract |
A new 3-phase current-source-type (or buck-mode) PWM PFC rectifier is proposed. The
necessity, the advantages and disadvantages of this type PWM rectifier are discussed first.
Then, the new power circuit topology and the modulation scheme to eliminate or mitigate
the disadvantages and obtain further new advantages of the current-source-type PWM
rectifier are introduced. The features of the new rectifier, i.e., high efficiency, simple
modulation process, robustness of the line-current modulation against dc current ripples
caused by distortion and asymmetrically of the utility voltages have been confirmed
through experimental results obtained from a prototype 12[kW] rectifier. |
