Title:
INSULATION POWER SUPPLY, AND POWER CONVERSION DEVICE
Document Type and Number:
Japanese Patent JP2018129891
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress a leak current which is made flow to a parasitic capacitor of an insulation transformer in a high-side insulation power supply by a high frequency signal which is generated by a high-frequency operation of a switching element.SOLUTION: A leak current is made to flow to a parasitic capacitor of an insulation transformer in a high-side insulation power supply by a high frequency signal which is generated by an ON/OFF operation of a high-side switching element. While paying attention to the fact that the leak current is a common mode current, the common mode current is reduced by a common mode reactor. Regarding the common mode reactor, the common mode current is reduced by the common mode reactor, and the common mode reactor covers the high frequency signal, thereby preventing the high frequency signal from being applied to the insulation transformer in the high-side insulation power supply. The leak current flowing to the parasitic capacitor of the insulation transformer is suppressed and further, a malfunction of the high-side switching element caused by the leak current flowing to the parasitic capacitor of the insulation transformer is reduced.SELECTED DRAWING: Figure 1
Inventors:
YUZURIHARA ITSUO
OMA RYOSUKE
KUNITAMA HIROSHI
HOSOYAMADA YU
OMA RYOSUKE
KUNITAMA HIROSHI
HOSOYAMADA YU
Application Number:
JP2017019865A
Publication Date:
August 16, 2018
Filing Date:
February 06, 2017
Export Citation:
Assignee:
KYOSAN ELECTRIC MFG
International Classes:
H02M3/155; H02M7/48
Domestic Patent References:
| JPH0833315A | 1996-02-02 | |||
| JP2010284027A | 2010-12-16 | |||
| JP2010119177A | 2010-05-27 | |||
| JP2010525772A | 2010-07-22 |
Foreign References:
| US20100164601A1 | 2010-07-01 |
Attorney, Agent or Firm:
Akio Shionoiri