| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a current detection device capable of performing accurate current detection without being influenced by an external magnetic flux generated from another-phase current by using magnetic flux detectors to the smaller number than the number of current paths. <P>SOLUTION: A magnetic flux detector 31 provided in order to detect a magnetic flux generated from a U-phase current Iu is installed near a current path 211, and outputs a detection signal Is1. A magnetic flux detector 32 provided in order to detect a magnetic flux generated from a V-phase current Iv is installed near a current path 212, and outputs a detection signal Is2. The detection signals Is1, Is2 from the magnetic flux detectors 31, 32 are input into a current correction part 51 in a microcomputer 5, and correction operation is performed by the current correction part 51, to thereby determine the U-phase current Iu, the V-phase current Iv and a W-phase current Iw. <P>COPYRIGHT: (C)2008,JPO&INPIT |
