| 摘要 |
PROBLEM TO BE SOLVED: To provide a converter with a plurality of arrays of switching elements connected in parallel, which improves controllability in a low output region by switching the number of parallel arrays in an output region where current ripples zero-cross to prevent zero cross of the current ripples in low output. SOLUTION: The converter includes: a plurality of arrays of switching elements connected in parallel between a low voltage side and a high voltage side; a plurality of reactors whose one ends are connected to the plurality of arrays of switching elements, respectively, and the other ends are connected in common to the low voltage side; and a capacitor connected in parallel to the output side, and the converter switches the plurality of arrays of switching elements while shifting phase, thereby moving energy between the low voltage side and the high voltage side. Specifically, the converter includes a current detection means for detecting a current value on the input side, and a controller for performing switching control of the number (n) of the plurality of parallel arrays of the plurality of switching elements on the basis of the current value of the input side and the calculated value of current ripples of the input side. With this configuration, the zero cross of the current ripples is prevented in low output. COPYRIGHT: (C)2010,JPO&INPIT |
