Title:
INVERTER DEVICE AND NON-BREAK POWER SUPPLY DEVICE
Document Type and Number:
Japanese Patent JP2015226359
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To realize an inverter device that is able to switch the output of a device to output that directly feeds commercial power supply, and to provide a non-break power supply device using the same.SOLUTION: A resonance voltage vc occurring between load and itself as a result of the stop of output from an inverter device 7 is detected by an insufficient voltage detection circuit 6. Whether the detected resonance voltage vc falls beyond the upper limit monitor value vp or lower monitor value vq is monitored by the insufficient voltage detection circuit 6. The waveform amplitude of the resonance voltage vc is different from that of the output voltage v of the inverter device 7 in terms of period and magnitude. Therefore, at a timing after 1/4 cycle from the output stop timing t0 of the inverter device 7, a fall beyond the lower monitoring value vq is immediately detected by the insufficient voltage detection circuit 6. A control device 4 in which this detection result has been input controls a switching circuit 2 after the output of the inverter device 7 drops, and switches the output of the device to the output of a direct supply circuit 3 that directly feeds commercial power supply.
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Inventors:
SATO YUTAKA
Application Number:
JP2014108887A
Publication Date:
December 14, 2015
Filing Date:
May 27, 2014
Export Citation:
Assignee:
FURUKAWA BATTERY CO LTD
International Classes:
H02M7/48; H02J9/00; H02J9/06
Domestic Patent References:
| JPH08205423A | 1996-08-09 | |||
| JPH08214557A | 1996-08-20 |
Attorney, Agent or Firm:
Takeshi Minegishi
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