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Patent Searching and Data


Title:
POWER SUPPLY DEVICE AND POWER SUPPLY SYSTEM WHICH USES SAME
Document Type and Number:
WIPO Patent Application WO/2018/220777
Kind Code:
A1
Abstract:
A control device (14) of a stabilized power supply device (1) is equipped with: a comparator (35) for comparing the highs and lows of a voltage command value (Vir) and a triangle wave signal (Cu), and on the basis of the comparison results, generating gate signals (Au, Bu) in order to control IGBTs (Q1-Q6) of a converter (6); and a frequency adjustment unit (32) for adjusting the frequency of the triangle wave signal (Cu) to a lower-limit value (fL) within a range in which setting the DC voltage (Vdc) to a reference DC voltage (Vr) is possible. Consequently, it is possible to reduce the switching loss which occurs in the IGBTs (Q1-Q6) of the converter (6).

Inventors:
TOYODA, Masaru (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
Application Number:
JP2017/020386
Publication Date:
December 06, 2018
Filing Date:
June 01, 2017
Export Citation:
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Assignee:
TOSHIBA MITSUBISHI-ELECTRIC INDUSTRIAL SYSTEMS CORPORATION (3-1-1 Kyobashi, Chuo-ku Tokyo, 31, 〒1040031, JP)
International Classes:
H02M7/12; H02J9/00; H02M5/42
Domestic Patent References:
WO2016194126A12016-12-08
WO2016035209A12016-03-10
Foreign References:
JP2008092734A2008-04-17
JPH1028378A1998-01-27
JP2016137577A2016-08-04
JP2006158109A2006-06-15
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (Nakanoshima Festival Tower West, 2-4 Nakanoshima 3-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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