Soft-switching bidirectional phase-shift converter with extended load range

Abstract

The present invention discloses a soft-switching bidirectional phase-shift converter with an extended load range, which is in particularly applicable to system for the fast charging of electric vehicles in various occasions, comprising an inverter bridge, a rectifier bridge, a transformer connected between the output side of the inverter bridge and the input side of the rectifier bridge, and an equivalent inductor representing the leakage inductance of a primary side of the transformer, wherein a DC input voltage is applied to the input side of the inverter bridge, and an output load is connected to the output side of the rectifier bridge. The phase-shift converter provided by the present invention is applicable to light-load cases, without influencing the operation in heavy-load cases, so the available load range of the present charger is extended compared to conventional phase shift converters.

Dependencies are inferred from the claim text.