| 摘要 |
<p>A circuit for preventing hazardous conditions in the event of short circuit failure of a capacitor in a DC link in an electric machine drive comprises a switch 14, for example a silicon-controlled rectifier, connected across the DC link capacitors 10. The switch is triggered by a fault detection and triggering circuit 16 which detects a change in voltage across one of the capacitors caused by the short circuit.</p> |
