Title:
UNINTERRUPTIBLE POWER SUPPLY APPARATUS AND POWER FAILURE COMPENSATING SYSTEM
Document Type and Number:
WIPO Patent Application WO/2005/093925
Kind Code:
A1
Abstract:
During the normal operation of a commercial power supply, a quick current limiting/interrupting part (3) supplies power from the commercial power supply to a load via a DC reactor, while an auxiliary power supplying part (4) performs a PQ control in such a manner that both the active and reactive powers to be supplied to the load (9) are zero. Additionally, the responsiveness of the PQ control is set to be longer than the accident detection period of the commercial power supply in an accident detecting part (2), thereby causing the auxiliary power supplying part (4) to supply power to the load (9) and an accident point without any instantaneous interruption until the accident detecting part (2) detects the accident. Moreover, the impedance of the DC reactor (14) is set to be equal to or greater than (100Z)/A, thereby inhibiting the voltage of the load (9) from being below an allowable voltage drop rate during the accident. If any power supply accident is detected by the accident detecting part (2), then the PQ control by the auxiliary power supplying part (4) is halted, and the interruptions by quick switches (13a,13b) are done.
Inventors:
GOKO YOSHINORI (JP)
SANO KOICHI (JP)
KOBAYASHI TAKESHI (JP)
OKUNO TAKAHIRO (JP)
MARUYAMA YUTAKA (JP)
TERADA KIYOTAKA (JP)
HATANAKA HIROTSUGU (JP)
MIZUNO KOICHI (JP)
KANAO NORIKAZU (JP)
SANO KOICHI (JP)
KOBAYASHI TAKESHI (JP)
OKUNO TAKAHIRO (JP)
MARUYAMA YUTAKA (JP)
TERADA KIYOTAKA (JP)
HATANAKA HIROTSUGU (JP)
MIZUNO KOICHI (JP)
KANAO NORIKAZU (JP)
Application Number:
PCT/JP2005/005833
Publication Date:
October 06, 2005
Filing Date:
March 29, 2005
Export Citation:
Assignee:
NISSIN ELECTRIC CO LTD (JP)
HOKURIKU ELECTRIC POWER (JP)
GOKO YOSHINORI (JP)
SANO KOICHI (JP)
KOBAYASHI TAKESHI (JP)
OKUNO TAKAHIRO (JP)
MARUYAMA YUTAKA (JP)
TERADA KIYOTAKA (JP)
HATANAKA HIROTSUGU (JP)
MIZUNO KOICHI (JP)
KANAO NORIKAZU (JP)
HOKURIKU ELECTRIC POWER (JP)
GOKO YOSHINORI (JP)
SANO KOICHI (JP)
KOBAYASHI TAKESHI (JP)
OKUNO TAKAHIRO (JP)
MARUYAMA YUTAKA (JP)
TERADA KIYOTAKA (JP)
HATANAKA HIROTSUGU (JP)
MIZUNO KOICHI (JP)
KANAO NORIKAZU (JP)
International Classes:
H02J7/34; H02J9/06; H02M7/48; (IPC1-7): H02J9/06; H02J7/34; H02M7/48
Foreign References:
| JPH0336209Y2 | 1991-07-31 | |||
| JPH09285012A | 1997-10-31 | |||
| JPH1118304A | 1999-01-22 | |||
| JPH09163634A | 1997-06-20 | |||
| JP2004201413A | 2004-07-15 |
Attorney, Agent or Firm:
Komori, Hisao (Noninbashi Chuo-k, Osaka-shi Osaka, JP)
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