| 摘要 |
<P>PROBLEM TO BE SOLVED: To quickly discharge a high voltage side capacitor and a low voltage side capacitor, and prevent an inverter from overheating. <P>SOLUTION: When a system main relay 43 emergently cuts off a battery 36, a lower arm of a step-up converter 40 with an upper arm kept off is switched to cause a charge stored in a low voltage side capacitor 46 to flow to the step-up converter 40, which consumes corresponding power, and when a motor 32 stops rotating, an upper arm of an inverter 34 with a lower arm kept on is switched to cause a charge stored in a high voltage side capacitor 48 to flow to the inverter 34, which consumes corresponding power. This can quickly electrically discharge the low voltage side capacitor 46 and the high voltage side capacitor 48 to prevent the inverter 34 from overheating. <P>COPYRIGHT: (C)2013,JPO&INPIT |
