Title:
DC-DC converter
Document Type and Number:
Japanese Patent JP5975687
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a DC-DC converter in which a step-up ratio or a step-down ratio can be varied and an output voltage can be controlled variably to an arbitrary voltage with respect to an input voltage.SOLUTION: The DC-DC converter is configured to supply power in any one direction or both directions between smoothing capacitors Cdc1, Cdc2 and comprises a switch circuit connected to both ends of Cdc2, a flying capacitor Cfc connected to a connecting point of switches S1, S2 and a connecting point of switches S3, S4 in the switch circuit, a current sensor 3 which detects a current flowing to a reactor Lchop connected to a connecting point of S2 and S3 and one end of Cdc1, voltage detection circuits 2, 6 for detecting voltages in both ends of any one of or both Cdc1, Cdc2, and a control circuit 8 which generates a first voltage command value corresponding to a direction in which power is supplied between Cdc1 and Cdc2 and a first current command value on the basis of a first voltage detection value from the voltage detection circuits, generates a duty command value on the basis of the first current command value and a current detection value from the current sensor and turns on/off S1-S4 in accordance with the duty command value.
Inventors:
Koji Kato
Yoichiro Nakajima
Kenji Arimatsu
Wataru Wayama
Kei Ohinata
Yoichiro Nakajima
Kenji Arimatsu
Wataru Wayama
Kei Ohinata
Application Number:
JP2012057245A
Publication Date:
August 23, 2016
Filing Date:
March 14, 2012
Export Citation:
Assignee:
Sanken Electric Co., Ltd.
Tohoku Electric Power Co., Inc.
Tohoku Electric Power Co., Inc.
International Classes:
H02M3/155; H02M3/07
Domestic Patent References:
| JP2002369501A |
Foreign References:
| WO2012014912A1 | ||||
| WO2011016199A1 |
Attorney, Agent or Firm:
Hidekazu Miyoshi
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu
Iwa Saki Kokuni
Masakazu Ito
Shunichi Takahashi
Toshio Takamatsu