Multistage coil type electromagnetic gun and half-bridge topological structure thereof

The utility model discloses a multistage coil type electromagnetic gun and a half-bridge topological structure thereof. The half-bridge topological structure comprises a polar energy storage unit, a main half-bridge circuit and at least two stages of resonant circuits; the conduction directions of a main full-control switch and a main diode of the main half-bridge circuit are opposite; the resonance circuit comprises an acceleration coil and an auxiliary half-bridge circuit. The main half-bridge circuit and the auxiliary half-bridge circuit are connected to the two ends of the energy storage unit in parallel. The conduction directions of an auxiliary full-control switch and an auxiliary diode of the auxiliary half-bridge circuit are opposite; two ends of the accelerating coil are connected between the main half-bridge circuit and the auxiliary half-bridge circuit; the auxiliary full-control switch and the main full-control switch are respectively connected with different electrodes of the energy storage unit.