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 (JP)
Application Number:
PCT/JP2017/020386
Publication Date:
December 06, 2018
Filing Date:
June 01, 2017
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
H02M7/12; H02J9/00; H02M5/42
Domestic Patent References:
| WO2016194126A1 | 2016-12-08 | |||
| WO2016035209A1 | 2016-03-10 |
Foreign References:
| JP2008092734A | 2008-04-17 | |||
| JPH1028378A | 1998-01-27 | |||
| JP2016137577A | 2016-08-04 | |||
| JP2006158109A | 2006-06-15 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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