Topologically combined resonant soft switch direct current converter with multiple resonator elements

The invention provides a topologically combined soft switch direct current converter with multiple resonator elements. The converter comprises a bridge inverter circuit, a topologically combined multi-element resonant circuit and a diode rectifier circuit which are connected in sequence. A current in the converter is input from the bridge inverter circuit and output from the diode rectifier circuit through the action of the topologically combined multi-element resonant circuit; the bridge inverter circuit is a half-bridge inverter circuit; the topologically combined multi-element resonant circuit includes two transformers which can effectively widen the power transmission capability of the converter; the topologically combined multi-element resonant circuit can achieve switching between anoutput-parallel CLTCL resonant circuit and a CLCL resonant circuit according to switching of an auxiliary switch; through reasonable parameter design, zero voltage turn-on of an inverter side switchtube and zero-current shut