Analysis on 1 MHz high frequency resonant inverter parallel connection

Ultra high frequency induction heating voltage resonant inverter parallel operation with 1MHz level based on LLC load was researched in this paper. It explored the inverters´ output power and the changing of commutation angle under different series inductance. Then, the correctness of theoretical analysis through Matlab/Simulink experiment was verified. It concluded that voltage resonant inverters´ commutation angle is obviously small when there are differences in series inductance at 1MHz voltage resonant inverter level. The inverter can be guaranteed to work in small inductive commutation state and more properly to build small or medium power induction heating power supply.