| 摘要 |
PROBLEM TO BE SOLVED: To enable reduction of the switching loss of a power supply system having two DC power sources to enhance the efficiency of DC power conversion.SOLUTION: A first adjustment period comprising plural carrier periods is constructed by an all-matching period and a boosting ratio adjusting period. In the all-matching period, the duty ratios of first and second DC power sources are adjusted and the phase difference between first and second carrier waves is adjusted so that two inflection points at reactor current IL1 and IL2 have the same timing. In the boosting ratio adjusting period, the duty ratios of the first and second DC power sources are adjusted so that each of the average values of the duty ratios of the first and second DC power sources which are calculated over the first adjustment period corresponds to the duty ratio for the output control of the first and second DC power sources, and the phase difference is adjusted so that respective one inflection points of the reactor current IL1 and IL2 have the same timing.SELECTED DRAWING: Figure 6 |
