Title:
UNINTERRUPTIBLE POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2016/103379
Kind Code:
A1
Abstract:
This uninterruptible power supply device (1) supplies AC power to a load (8) from one inverter that is either a first inverter (14) for a first power conversion device (3) or a second inverter (34) for a second power conversion device (4), and supplies AC power to the load (8) from the other inverter when the one inverter is malfunctioning. If DC voltage (VDC2) supplied to the second inverter (34) is higher than a lower limit voltage (VL), the second power conversion device (4) outputs AC voltage within an allowable input voltage range for the load (LDn) as a sinusoidal waveform. If the DC voltage (VDC2) is lower than the lower limit voltage (VL), the second power conversion device (4) outputs AC voltage within the allowable input voltage range for the load (LDn) such that said AC voltage has waveform distortion within an allowable range for the load (LDn).
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Inventors:
TOYODA MASARU (JP)
Application Number:
PCT/JP2014/084228
Publication Date:
June 30, 2016
Filing Date:
December 25, 2014
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC INC (JP)
International Classes:
H02J9/06
Foreign References:
| JP2010124557A | 2010-06-03 | |||
| JP2008067491A | 2008-03-21 | |||
| JPH10215585A | 1998-08-11 |
Other References:
See also references of EP 3240139A4
Attorney, Agent or Firm:
Fukami Patent Office, p. c. (JP)
Patent business corporation Fukami patent firm (JP)
Patent business corporation Fukami patent firm (JP)
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