| US 7,486,082 B2 | ||
| Anomaly detection in inverter system | ||
| Seiji Hachisuka, Kawasaki (Japan); Masaru Tanaka, Kawasaki (Japan); Minoru Senba, Kawasaki (Japan); and Shuuichi Yadoori, Kawasaki (Japan) | ||
| Assigned to Fujitsu Limited, Kawasaki (Japan) | ||
| Filed on Dec. 27, 2006, as Appl. No. 11/616,631. | ||
| Application 11/616631 is a division of application No. 10/620597, filed on Jul. 17, 2003. | ||
| Claims priority of application No. 2002-212666 (JP), filed on Jul. 22, 2002; and application No. 2003-183034 (JP), filed on Jun. 26, 2003. | ||
| Prior Publication US 2007/0103094 A1, May 10, 2007 | ||
| Int. Cl. G01R 31/08 (2006.01); G01R 19/00 (2006.01); H02M 5/42 (2006.01) | ||
| U.S. Cl. 324—536 [324/522; 324/103 R; 363/95] | 6 Claims |
| 1. An electronic device including an inverter, comprising:
an anomaly detection circuit that detects anomaly in which a current route is maintained by disconnection discharge in circuit
wiring of said inverter or proximity discharge between high and low voltage parts of said circuit wiring; and
a control part that stops an operation of said inverter when said anomaly detection circuit detects the anomaly,
wherein said anomaly detection circuit includes a current detection part provided at a DC input side of said inverter, and
wherein said current detection part detects magnetic flux change occurring in the circuit wiring itself at the DC input side
of said inverter by maintaining the current route caused by the disconnection discharge or the proximity discharge, and detects
change in a circuit current of said inverter due to said discharge through the medium of the detected magnetic flux change.
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