| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a direct current imbalance detector capable of detecting current imbalance even when a balance circuit or the like is provided on the output side of an inversion circuit or even during a transient period. <P>SOLUTION: The average value of current values corresponding to the output currents of a power rectification circuit detected by current detectors (3a to 3d) is constantly computed (21). When current values detected by the current detectors (3a to 3d) of the respective systems exceed an upper limit or a lower limit within a predetermined range from the computed average value (22, 23, 24-1 to 24-4), the operation of the power rectification circuit (2) and the inversion circuit (4) is stopped. <P>COPYRIGHT: (C)2009,JPO&INPIT |
