The Method of Equalizing the Inter-Terminal Voltage of the Capacitors Connected in Series

Abstract

In this paper, the method to equalize the inter-terminal voltage of each capacitor connected in series using a transformer is proposed. That is, it is realizable in the simple circuit with a single transformer and multiple switches, and the method can carry out equalizing of the inter-terminal voltage of each capacitor, and it can charge it efficiently by varying the voltage rise ratio of the transformer. And, by carrying out charging experiments, and comparing the method where the voltage rise ratio is fixed with the method where it is variable, it became clear that in which a suitable value is selected for the voltage rise ratio of the transformer, regeneration is done more efficiently than when the ratio is fixed, and the inter-terminal voltage of each capacitor is equalized. It confirmed that the suggested method is effective.