Title:
DC / DC converter control device and its control method
Document Type and Number:
Japanese Patent JP6343187
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce a loss by performing soft switching operations of a primary-side switch and a secondary-side switch even in the case where a voltage difference between a primary-side DC voltage and a secondary-side DC voltage is great or even under a light load, in a DC/DC converter.SOLUTION: In a control device 100 for the DC/DC converter, a phase difference φ between drive signals S1p-S6p of primary-side switches 61-66 outputted from a primary-side pulse modulator 103 and drive signals S1s-S6s of secondary-side switches 91-96 outputted from a secondary-side pulse modulator 104 is controlled by a phase control section 102. Further, between a duty δp of the primary-side switches 61-66 and a duty δs of the secondary-side switches 91-96, the duty δp is adjusted by a duty control section 101 in accordance with a voltage difference between a primary-side DC voltage E1 and a secondary-side DC voltage E2, and when turning on or turning off the primary-side switches 61-66 and the secondary-side switches 91-96, the soft switching operations are performed.
Inventors:
Ryu Suto
Yuki Nakahara
Toshihisa Shimizu
Yuki Nakahara
Toshihisa Shimizu
Application Number:
JP2014132945A
Publication Date:
June 13, 2018
Filing Date:
June 27, 2014
Export Citation:
Assignee:
Shindengen Industry Co., Ltd.
Tokyo Metropolitan University
Tokyo Metropolitan University
International Classes:
H02M3/28; H02J1/00
Domestic Patent References:
| JP2013251998A | ||||
| JP2012065511A | ||||
| JP2002034238A |
Foreign References:
| US6944033 |
Other References:
周藤龍、清水敏久,Y-Δ結線による三相絶縁型双方向DC/DCコンバータの軽負荷時の効率改善,電気学会論文誌D,日本,一般社団法人電気学会,2013年 6月 1日,Vol.133 No.6 2013,595頁-608頁
Attorney, Agent or Firm:
Kakimoto Yasunari
Kunihiko Ohashi
Kunihiko Ohashi