Title:
Power converter
Document Type and Number:
Japanese Patent JP6140007
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To transfer power while maintaining soft switching between a three-phase AC voltage source and a DC voltage source.SOLUTION: A power conversion device 10 comprises: a three-phase AC voltage source 80; three power conversion parts 30; and a DC voltage source 6. The power conversion part 30 includes phase bridges 1-4. The phase bridges 1 and 2 connected in parallel and the phase bridges 3 and 4 connected in parallel are connected via a load. In the phase bridge 1, positive electrode terminals are connected to phases of the three-phase AC voltage source 80, and negative electrode terminals are short-circuited with each other. In the phase bridge 4, positive electrode terminals and negative electrode terminals are short-circuited with each other. The DC voltage source 6 is connected in parallel with any one phase bridge 4. The phase bridges 1 and 2 are switched in such a manner that a primary voltage repeats a voltage of the three-phase AC voltage source 80 and an inversion voltage for a phase period γ via a zero voltage for each half term. The phase bridges 3 and 4 are switched in such a manner that a secondary voltage repeats a voltage of the DC voltage source 6 and an inversion voltage for the phase period γ via a zero voltage for each half term in the same frequency as the primary voltage and while delaying a phase by (180°-control angle δ).
Inventors:
Hiroki Ishiuchi
Yoichi Omori
Yoichi Omori
Application Number:
JP2013138138A
Publication Date:
May 31, 2017
Filing Date:
July 01, 2013
Export Citation:
Assignee:
Toyo Denki Manufacturing Co., Ltd.
International Classes:
H02M7/12
Domestic Patent References:
| JP2013027201A | ||||
| JP2005295671A | ||||
| JP2005073362A |
Attorney, Agent or Firm:
Kenji Sugimura
Makoto Fukuo
Makoto Fukuo