Title:
FERRORESONANCE SUPPRESSION DEVICE AND VOLTAGE TRANSFORMER PROVIDED WITH SAME
Document Type and Number:
WIPO Patent Application WO/2020/194374
Kind Code:
A1
Abstract:
This ferroresonance suppression device is for suppressing a ferroresonance phenomenon in a transformer having an iron core and a primary coil and a secondary coil wound around the iron core. The ferroresonance suppression device includes: an integral unit that receives the input of a secondary voltage occurring in a secondary coil of a transformer and outputs the integral result of the secondary voltage as a first voltage; an iron core saturation detection unit that compares the first voltage with a threshold value and detects occurrence of iron core saturation; and a short circuit unit that, when the occurrence of iron core saturation has been detected by the iron core saturation detection unit, causes both terminals of the secondary coil to short-circuit via a first resistance.
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Inventors:
TSUNODA TAKANORI (JP)
SHIBUYA DAISUKE (JP)
SHIBAZAKI MASAYUKI (JP)
SHIBUYA DAISUKE (JP)
SHIBAZAKI MASAYUKI (JP)
Application Number:
PCT/JP2019/012066
Publication Date:
October 01, 2020
Filing Date:
March 22, 2019
Export Citation:
Assignee:
NISSIN ELECTRIC CO LTD (JP)
International Classes:
H01F27/42; H01F38/24
Foreign References:
| JPS6059745U | 1985-04-25 | |||
| JPS59162714A | 1984-09-13 | |||
| JP2012143076A | 2012-07-26 | |||
| JPS6099837U | 1985-07-08 |
Attorney, Agent or Firm:
SHIMIZU, Satoshi et al. (JP)
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