| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the following problem: it is difficult to completely discharge a capacitor 16 connected with an input terminal of an inverter IV connected with a main machine (a motor generator 10) when a vehicle has a collision. <P>SOLUTION: A series regulator 40 steps down a voltage of a capacitor 16 and outputs the stepped-down voltage to a drive unit DU of a U-phase lower arm. A flyback converter FBd for discharge control outputs electric power to a drive unit DU of a U-phase upper arm with an output of the series regulator 40 as an input. When a collision is detected, a photocoupler 54 is turned off, so that the series regulator 54 is turned on to start discharge control. <P>COPYRIGHT: (C)2012,JPO&INPIT |
