Invention Grant
US09184674B2 Power conversion apparatus that provides power conversion between AC and DC power 有权
提供交流和直流电源之间的电力转换的电力转换装置

Power conversion apparatus that provides power conversion between AC and DC power
Abstract:
A power conversion apparatus includes: a bridge circuit between AC and DC ends; a converter circuit between the bridge circuit and the DC end; and a control device for the converter circuit. The converter circuit includes: first and second switches in series between terminals of the bridge circuit; third and fourth switches in series between terminals of the DC end; and a reactor between an intermediate point of the first and second switches and an intermediate point of the third and fourth switches. The control device includes: a first controller defining a part of a cycle of an AC voltage as a stop period and stopping switching the first and second switches during the stop period; and a second controller performing voltage/power factor correction controls over an entire cycle by switching the third and/or fourth switches.
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