High-frequency boosting isolation inverter

The invention discloses a high-frequency boosting isolation inverter, which comprises a high-frequency boosting inverting circuit and an AC-AC (alternating current-alternating current) conversion circuit. The high-frequency boosting inverting circuit is mainly used for outputting the single-phase AC voltage, and realizing the low ripple of input current by controlling the phase of the main switch tube via a staggered parallel connecting structure. Meanwhile, the high-frequency boosting inverting circuit adopts an active clamp structure to realize soft opening and closing of the main switch tube, so the consumption is reduced and the efficiency is improved. In addition, the high-frequency boosting inverting circuit adopts two coupled induction type serial connecting structures at the load side to realize higher boosting capability. The single-phase AC voltage is converted into the three-phase AC current by the AC-AC conversion circuit, and the energy transmission process is divided into a capacitance side charging part and a capacitance side discharging part for the output end. Therefore, the isolation inverter can obtain higher voltage gain and lower input current ripple, and the conversion efficiency and the reliability are high.