Soft switch topological structure of single-phase semi-conductor power converter

The invention discloses a soft switch topological structure of a single-phase semi-conductor power converter, which is technically characterized in that an auxiliary resonance unit is additionally arranged on a conventional single-phase hard switch power converter and is connected into a single-phase H-bridge of a hard switch, so as to form a soft switch semi-conductor power converter. The improved power converter is used for conducting DC-DC or DC-AC conversion on an input signal of an input side DC voltage source; then, the input signal is output to a load after being filtered. The auxiliary resonance unit can improve the power converter by additionally arranging or integrating a switch power device and an internal diode. According to the technical scheme, compared with the conventional single-phase hard switch power converter, the single-phase semi-conductor power converter adopting the soft switch topological structure and the auxiliary resonance unit has the advantages that the power conversion efficienc