Series resonant converter based on HF AC-link technology

This paper proposes a series resonant converter based on HF (high-frequency) AC-link technology, and gives the analysis of its working principle and working process, as well as the control method and system block diagram. Simulation and experiment ware carried out, and the experimental results show that the converter can make the grid-side voltage and current in the same phase, and the grid-side current harmonic level is low. Besides, series resonance has high efficiency and constant-current charging characteristics. Thus, the converter has high power factor, high efficiency and low harmonic.