Loss Optimization Method for Auxiliary Converter Circuit of Resonant DC Link Inverter Based on SVPWM

In order to reduce the losses of the auxiliary circuit of the resonant DC link inverter, this paper proposes a novel space vector pulse width modulation (SVPWM)method. This method replaces traditional zero voltage vectors with zero voltage grooves, optimizing the order of voltage vectors without changing the traditional SVPWM vector synthesis method. By enabling the auxiliary circuit to operate only three times within a cycle, the losses of the auxiliary circuit are reduced and the efficiency of the inverter is improved. Compared with traditional modulation strategies, this method does not cause loss of bus voltage due to the generation of zero voltage grooves, improving the quality of the output waveform. Finally, the effectiveness of the modulation strategy was verified through simulation. cuit hod, he he he n he n strat