Title:
CHOPPER CIRCUIT
Document Type and Number:
WIPO Patent Application WO/2017/169062
Kind Code:
A1
Abstract:
A chopper circuit equipped with a coupling inductor that has a first and a second coil provided respectively in a first and a second conduction path, and that is magnetically coupled such that currents flow in the same direction in each path. The first and second conduction paths have a conductive wire portion through which the currents flow in parallel in opposite directions. The chopper circuit is equipped with a current sensor having a magnetic body sensor core surrounding the conductive wire portions of the first and second conduction paths, and a control unit that controls the conduction time of the first and second conduction paths on the basis of the detection result from the current sensor so as to balance the currents flowing through the first and the second conduction paths.
Inventors:
TASHIRO KEIJI (JP)
HIROTA MASAYOSHI (JP)
HIROTA MASAYOSHI (JP)
Application Number:
PCT/JP2017/003126
Publication Date:
October 05, 2017
Filing Date:
January 30, 2017
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
H02M3/155
Domestic Patent References:
| WO2013038512A1 | 2013-03-21 |
Foreign References:
| JP2010539870A | 2010-12-16 | |||
| JPH0329865A | 1991-02-07 | |||
| JPH03191870A | 1991-08-21 | |||
| JPH01285866A | 1989-11-16 | |||
| JPS502121A | 1975-01-10 | |||
| JP2005168277A | 2005-06-23 | |||
| JP2014060851A | 2014-04-03 |
Attorney, Agent or Firm:
KOHNO, Hideto et al. (JP)
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