Title:
DC/DC CONVERTER
Document Type and Number:
WIPO Patent Application WO/2012/014912
Kind Code:
A1
Abstract:
In the disclosed dc/dc converter, a high-voltage-side smoothing capacitor is connected in parallel to a series circuit of four switching elements (S1-S4) connected sequentially in series with first to third connecting sections therebetween; a charging/discharging capacitor is connected between the first and third connecting sections; and the low-voltage-side voltage applied to the second connecting section with an inductor therebetween is increased by means of the opening and closing of the switching elements (S1-S4) and is output from the abovementioned series circuit; however, a first computed value is computed by a first controller (25) on the basis of the difference between an output voltage target value (Vout*) and the output voltage (Vout), a second computed value is computed by a second controller (26) on the basis of the difference between a charging/discharging capacitor voltage target value (Vcf*) and the charging/discharging capacitor voltage (Vcf), the first and second computed values are added and subtracted by control blocks (27, 28), and the charging/discharging capacitor voltage and the output voltage are controlled by controlling the rate of conduction of the switching elements (S1-S4) by means of gate signals (G1, G2), thus preventing overvoltage damage to the switching elements (S1-S4).
Inventors:
OKUDA Tatsuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
奥田 達也 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
URAKABE Takahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
浦壁 隆浩 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
KOBAYASHI Masaru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
奥田 達也 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
URAKABE Takahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
浦壁 隆浩 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
KOBAYASHI Masaru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2011/067033
Publication Date:
February 02, 2012
Filing Date:
July 27, 2011
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
OKUDA Tatsuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
奥田 達也 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
URAKABE Takahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
浦壁 隆浩 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
OKUDA Tatsuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
奥田 達也 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
URAKABE Takahiro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
浦壁 隆浩 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
International Classes:
H02M3/155
Attorney, Agent or Firm:
MURAKAMI Keigo et al. (35-8, Minamimukonoso 3-chome Amagasaki-sh, Hyogo 33, 〒6610033, JP)
Claims: