Abstract
In this paper, an improved forward converter with power-factor-correction (PFC) and zero-voltage-switching (ZVS) features for split-phase charger applications is proposed. For a universal line input, the improved forward converter can implement PFC feature, which can improve power quality and reduce total-harmonic-distortion (THD) of power line. In addition, the active switches of the improved forward converter can be operated under a ZVS condition, in which the switching losses of the active switches can be reduced. Therefore, the improved forward converter can achieve high power quality and high conversion efficiency. Furthermore, the split-phase charger can also improve unbalanced voltage of series-connected batteries to extend utility rate. Finally, the improved forward converter with PFC and ZVS features for split-phase charger applications is built and implemented. Experimental results are presented to verify the performance and the feasibility of the improved forward converter.
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