Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/184830
Kind Code:
A1
Abstract:
A power conversion device that outputs voltages, which correspond to an output voltage command, to output terminals in each switching cycle, and comprises: a DC power source which has (2n+1) (n is an integer of 2 or more) output terminals; an AC power source, one end of which is connected to an intermediate potential terminal of the DC power source; a half-bridge circuit which has (2n+1) input terminals and one output terminal, and is connected to the DC power source; and a bidirectional switch which is connected between the other end of the AC power source, and the output terminal of the half-bridge circuit. The power conversion device selects: the voltage (first voltage) that is equal to or greater than the output voltage command, and is closest to the output voltage command, from among the (2n+1) level DC voltage, and the AC power source voltage; and the voltage (second voltage) that is equal to or less than the output voltage command, and is closest to the output voltage command, from among the (2n+1) level DC voltage, and the AC power source voltage. The power conversion device outputs the first voltage, and the second voltage alternately within the switching cycle.
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Inventors:
FUJITA SATORU (JP)
Application Number:
PCT/JP2013/003149
Publication Date:
November 20, 2014
Filing Date:
May 17, 2013
Export Citation:
Assignee:
FUJI ELECTRIC CO LTD (JP)
International Classes:
H02M7/48; H02J3/38; H02J9/06; H02M7/487
Foreign References:
| JP2012120407A | 2012-06-21 | |||
| JP2012253981A | 2012-12-20 | |||
| JP2012222968A | 2012-11-12 | |||
| JP2012165539A | 2012-08-30 |
Attorney, Agent or Firm:
MATSUMOTO, YOICHI (JP)
Yoichi Matsumoto (JP)
Yoichi Matsumoto (JP)
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