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Title:
POWER CONVERSION DEVICE AND CONTROL METHOD FOR SAME
Document Type and Number:
WIPO Patent Application WO/2017/061177
Kind Code:
A1
Abstract:
Provided is a power conversion device in which a control unit thereof determines an output current target value on the basis of an input power value of direct current power and a voltage value of an alternating current system, determines a current target value and a voltage target value of a DC/AC converter on the basis of the output current target value and thereby controls the DC/AC converter circuit, determines a current target value of a DC/DC converter on the basis of the current target value and the voltage target value of the DC/AC converter circuit and the voltage target value of the DC/DC converter and controls the DC/DC converter, thereby controlling the output of alternating current power and selecting, for the voltage target value of the DC/DC converter, the largest value at a given time of one of the following: the direct current voltage value of a direct current power source; the absolute value of the voltage target value on the alternating current side of the DC/AC converter; and the direct current voltage lower limit value, which is a prescribed value less than the peak of the absolute value.

Inventors:
OKUMURA TOSHIAKI (JP)
AYAI NAOKI (JP)
Application Number:
PCT/JP2016/074247
Publication Date:
April 13, 2017
Filing Date:
August 19, 2016
Export Citation:
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Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H02M7/48; G05F1/67; H02J3/38
Domestic Patent References:
WO2014199795A12014-12-18
WO2014199796A12014-12-18
WO2013069326A12013-05-16
Foreign References:
JP2015107027A2015-06-08
JP2012151923A2012-08-09
Attorney, Agent or Firm:
SunCrest Patent and Trademark Attorneys (JP)
Patent business corporation Sun Crest international patent firm (JP)
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