Title:
DC-AC CONVERSION DEVICE AND CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2014/132943
Kind Code:
A1
Abstract:
Provided is a DC-AC conversion device capable of reducing the ripple current outputted from a battery. A DC-AC conversion device provided with: a DC-DC conversion circuit having a full-bridge circuit; a DC-AC conversion circuit for converting a DC voltage outputted from the DC-DC conversion circuit into an AC voltage; a coil having one end connected to one of the DC terminals of the DC-DC conversion circuit; and a capacitor connected between the other end of the coil and the other DC terminal. The DC-AC conversion device is also provided with: a short-circuit controller for controlling switching so that a leg of the full-bridge circuit temporarily short-circuits; a phase inversion controller for controlling switching of the full-bridge circuit so that the phase of the AC voltage outputted from the full-bridge circuit inverts after the leg of the full-bridge circuit is temporarily short-circuited; and a short-circuit time variation unit for varying the time for which the leg of the full-bridge circuit is short-circuited at a specific period corresponding to the period of the AC voltage outputted from the DC-AC conversion circuit.
Inventors:
HIROTA MASAYOSHI (JP)
IZUMI TATSUYA (JP)
IZUMI TATSUYA (JP)
Application Number:
PCT/JP2014/054423
Publication Date:
September 04, 2014
Filing Date:
February 25, 2014
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO WIRING SYSTEMS (JP)
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
AUTONETWORKS TECHNOLOGIES LTD (JP)
International Classes:
H02M7/48; H02M3/28
Foreign References:
| JP2008263683A | 2008-10-30 | |||
| JP2001204170A | 2001-07-27 | |||
| JP2010178566A | 2010-08-12 | |||
| JP2012070518A | 2012-04-05 | |||
| JP4670582B2 | 2011-04-13 |
Other References:
See also references of EP 2963798A4
Attorney, Agent or Firm:
KOHNO, Hideto et al. (JP)
Hidehito Kono (JP)
Hidehito Kono (JP)
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