Next generation space voltage vector controlled three-phase ZVS-PWM active AC-DC converter with auxiliary transformer-assisted resonant DC link

In this paper, a novel prototype of a zero voltage switching (ZVS) PWM-controlled three-phase AC-DC active power converter is presented, which incorporates a transformer-assisted resonant tank DC link (TQRDCL) topology. The operating characteristics of TQRDCL are described and the design procedure is discussed in terms of the theoretical analysis. Proposed TQRDCL stage operation is also illustrated and discussed by means of simulating and experimental results. The simulated system operation characteristics, which work with DSP (digital signal processor)-based space vector modulated sinewave current synthesizing and power factor correction, with an instantaneous-output DC power feedback loop, are demonstrated and compared with resonant DC link (RDCL) and hard-switching based converter systems.