Finite-time settling control scheme of low pass filter-related state variables for current-source three-phase PWM PFC converter and its performance evaluations

In this paper, a dynamically mathematical circuit system model of active three-phase current-source type PWM converter for power factor correction and sinewave current shaping scheme is described on the basis of instantaneous space vectors in /spl alpha/-/spl beta/ stationary coordinate plane. The mathematical formulation of the discretized value system and control algorithm to achieve the deadbeat responses of state variables in the utility AC side low pass filter of this converter are evaluated and discussed herein. The system response of PFC converter with deadbeat some control implementation is quick and abnormal transient oscillations of both source and and capacitor voltage are suppressed effectively, although the state variable in the state feedback loop is only an for current of low pass filter in utility AC power source side.