M. Kwon, J. Park, S. Choi, "A Bidirectional Three-Phase Push-Pull Converter With Dual Asymmetrical PWM Method", IEEE International Future Energy Electronics Conference, pp.161-167, Nov. 2013, Tainan, Taiwan
Abstract : This paper proposes a new bidirectional three-phase
push-pull converter that has the simplest structure and achieves
ZVS of switches. The proposed dual asymmetrical PWM
(DAPWM) technique offers not only power flow control or
output voltage control but reduced circulating current by
matching the primary voltage with the secondary voltage
referred to the primary. A bidirectional mode change is easy to
implement since switching patterns for both forward and
reverse operations are identical and the power flow is
determined by the difference in the two duty cycles.
Experimental results from a 5kW prototype are provided to
validate the proposed concept.