Title:
ALTERNATING CURRENT-DIRECT CURRENT CONVERTING APPARATUS AND APPARATUS FOR DRIVING ELECTRIC MACHINERY
Document Type and Number:
WIPO Patent Application WO/2010/064284
Kind Code:
A1
Abstract:
Provided is an alternating current-direct current converting apparatus which can improve a power factor by suppressing a harmonic current at low cost. The alternating current-direct current converting apparatus is provided with two capacitors connected in series between output terminals of a rectifier (2); a first switch (3) connected between one input terminal of the rectifier (2) and a connecting point of the capacitor; a second switch (4) connected between the other input terminal of the rectifier (2) and the connecting point of the capacitor; a voltage detector (21) for detecting voltages at the both ends of the capacitor; a current detector (22) for detecting a current inputted from an alternating power supply (1); and a control means (20) for drive-controlling the first switch (3) and the second switch (4). The control means (20) fixes the voltages at the both ends of the capacitor by using the results obtained by converting the detection results obtained from the current detector (22) into effective power components and detection results obtained from the voltage detector (21), and drive-controls the first switch (3) and the second switch (4) to improve the power supply power factor.
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Inventors:
SHINOMOTO, Yosuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
篠本 洋介 (〒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, 10083, JP)
SHIMOMUGI, Takuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
下麥 卓也 (〒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, 10083, JP)
篠本 洋介 (〒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, 10083, JP)
SHIMOMUGI, Takuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
下麥 卓也 (〒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, 10083, JP)
Application Number:
JP2008/071762
Publication Date:
June 10, 2010
Filing Date:
December 01, 2008
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 10083, 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, 10083, JP)
SHINOMOTO, Yosuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
篠本 洋介 (〒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, 10083, JP)
SHIMOMUGI, Takuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
SHINOMOTO, Yosuke (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
篠本 洋介 (〒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, 10083, JP)
SHIMOMUGI, Takuya (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
International Classes:
H02M7/06
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (KISA PATENT & TRADEMARK FIRM, The 6th Central Bldg.19-10, Toranomon 1-chome,Minato-k, Tokyo 01, 10500, JP)
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