Fig. 1. Series resonant power supply

Fig. 2. Simulation waveforms of original circuit

Fig. 3. Simulation waveforms of AC-Link circuit

Fig. 4. Schematic diagram of circuit structure of scheme 1

Fig. 5. Circuit simulation waveforms under scheme 1

Fig. 6. Control signal comparison of switches S1 and S4

Fig. 7. Circuit simulation waveforms under scheme 2

Fig. 8. Circuit prototype of 800 V/6 A charging power supply

Fig. 9. Test waveforms of the original circuit

Fig. 10. Test waveforms of scheme 2