| US 7,531,987 B2 | ||
| Capacitor control system | ||
| Tosihiko Ohasi, Osaka (Japan); Kimiyasu Kakiuchi, Osaka (Japan); and Yohsuke Mitani, Osaka (Japan) | ||
| Assigned to Panasonic Corporation, Osaka (Japan) | ||
| Appl. No. 11/547,396 PCT Filed Apr. 06, 2005, PCT No. PCT/JP2005/006738 § 371(c)(1), (2), (4) Date Oct. 02, 2006, PCT Pub. No. WO2005/099062, PCT Pub. Date Oct. 20, 2005. |
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| Claims priority of application No. 2004-112963 (JP), filed on Apr. 07, 2004. | ||
| Prior Publication US 2007/0210761 A1, Sep. 13, 2007 | ||
| Int. Cl. H02J 7/00 (2006.01) | ||
| U.S. Cl. 320—116 [320/134; 307/10.7] | 2 Claims |
| 1. A capacitor control system comprising:
a capacitor unit having a plurality of capacitors connected in a series connection, said capacitor unit being divided into
capacitor blocks formed of a specific number of the plurality of capacitors connected in a series connection;
a plurality of detectors provided in the capacitor blocks; and
a microcomputer configured to be connected to said plurality of detectors by way of an analog switch for processing information
obtained from said plurality of detectors,
wherein said plurality of detectors select arbitrary capacitors in the capacitor blocks and a voltage of the capacitors charges
a condenser provided in said plurality of detectors, the condenser is isolated from a respective capacitor block, and said
plurality of detectors determine the voltage of the isolated condenser, and said plurality of detectors detect voltages of
the capacitors such that each of said plurality of detectors detect in each capacitor block connected, after once detecting
all capacitors in a first detection, selectively the capacitors showing an abnormal voltage value in the first detection in
a second detection.
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