Title:
UNINTERRUPTIBLE POWER SUPPLY APPARATUS AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2012/147263
Kind Code:
A1
Abstract:
In the present invention, a second DC power supply voltage (161) that is the result of outputting a first DC power supply voltage (160), which is the result of converting an AC power supply (1001) into direct current with an AC-DC converter circuit (1003), via a first switch (111) for PWM switching, is smoothed and fed to a load as an output DC power supply voltage (163). The first DC power supply voltage (160) is also supplied to a battery (120) via a third switch (113) for PWM switching, to charge the battery (120). A third power supply voltage (162) outputted from the battery (120) is outputted to the output side of the first switch (111) via a fourth switch (114) for PWM switching. A processor (101) transmits to a driver (102), as necessary, a control signal (130) for controlling the switching operations of the first to fourth switches (111-114), on the basis of the first and third power supply voltages (160, 162), the result of reading the output DC power supply voltage (163), and an input control signal from outside.
Inventors:
HAGIHARA YASUHIKO (JP)
Application Number:
PCT/JP2012/001672
Publication Date:
November 01, 2012
Filing Date:
March 09, 2012
Export Citation:
Assignee:
NEC CORP (JP)
HAGIHARA YASUHIKO (JP)
HAGIHARA YASUHIKO (JP)
International Classes:
H02J9/00; H02J9/06; H02M3/155
Foreign References:
| JPH1118318A | 1999-01-22 | |||
| JP2002252971A | 2002-09-06 | |||
| JPH02193544A | 1990-07-31 | |||
| JP2002191138A | 2002-07-05 | |||
| JP2000152515A | 2000-05-30 | |||
| JP2005224047A | 2005-08-18 | |||
| JP2007294322A | 2007-11-08 |
Attorney, Agent or Firm:
IEIRI, Takeshi (JP)
House ON 健 (JP)
House ON 健 (JP)
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