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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/2018/220778
Kind Code:
A1
Abstract:
A control device (12) of a stabilized power supply device (1) is equipped with: a comparator (35) for comparing the highs and lows of a voltage command value (Vor) 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 an inverter (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 output AC voltage (Vo) to a reference AC voltage (Vr) is possible. Consequently, it is possible to reduce the switching loss which occurs in the IGBTs (Q1-Q6) of the inverter (6).

Inventors:
TOYODA, Masaru (3-1-1 Kyobashi Chuo-k, Tokyo 31, 〒1040031, JP)
Application Number:
JP2017/020387
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:
H02J9/06; H02M7/48
Domestic Patent References:
WO2016092613A12016-06-16
Foreign References:
JPH09247947A1997-09-19
JPH10271835A1998-10-09
JPH07298626A1995-11-10
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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