Title:
UNINTERRUPTIBLE POWER SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/094142
Kind Code:
A1
Abstract:
In the present invention, when a commercial power supply mode is selected, a control device (20) controls an uninterruptible power source device (100) so as to transition to an inverter power supply mode when a power failure of an AC power source (1) has been detected by a power source abnormality detection unit (36). The power source abnormality detection unit (36) calculates an estimated value of a maximum value of an AC input voltage supplied to an input terminal (T1) on the basis of an instantaneous value of the AC input voltage and a phase detection value. The power source abnormality detection unit (36) is configured to store a temporal transition of the maximum value during a simulated power failure of the AC power source (1). The power source abnormality detection unit (36) determines a power failure of the AC power source (1) on the basis of a comparison between the temporal transition of the estimated value of the maximum value and the stored temporal transition of the maximum value during power failure.
Inventors:
TOYODA MASARU (JP)
Application Number:
PCT/JP2015/083890
Publication Date:
June 08, 2017
Filing Date:
December 02, 2015
Export Citation:
Assignee:
TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP (JP)
International Classes:
H02J9/06
Foreign References:
| JP2010115029A | 2010-05-20 | |||
| JP2003061262A | 2003-02-28 | |||
| JP2005172427A | 2005-06-30 | |||
| JP2006010435A | 2006-01-12 | |||
| JP2006126135A | 2006-05-18 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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