Soft switching high-frequency link four-leg matrix inverter topology and pulse width modulation method

The invention discloses a soft switching high-frequency link four-leg matrix inverter topology and a pulse width modulation method, and belongs to the technical field of power electronic power conversion. The topology comprises a push-pull forward high-frequency inversion structure with a clamping capacitor, a high-frequency transformer, a post-stage four-leg matrix converter and an output LC type filter which are connected in sequence. According to the topology, overvoltage spikes of all switching tubes are suppressed by introducing a clamping capacitor; the pulse width modulation method comprises an SPWM signal generation mode method, a deconstruction and reconstruction method and a fourth bridge arm independent control method, ZCS switching-on and ZVS switching-off of a front-stage switching tube and ZVS switching-on and ZVS switching-off of a rear-stage switching tube in topology can be realized, and switching loss of the switching tubes working in a high-frequency state can be reduced; meanwhile, under t