| 摘要 |
PURPOSE:To eliminate the inconvenience for the interruption of an indoor lamp and of a power source by operating an induction motor via a stationary inverter a vehicle in a generating range when the voltage of a filter condenser decreases to the prescribed value or lower due to the separation from a trolley wire. CONSTITUTION:An induction motor is operated and controlled through an inverter for a vehicle which uses a filter condenser and a gate turn-OFF thyristor by the voltage from a trolley wire via a current collector. This control is performed by a gate circuit 22 through a reference oscillator 11, a frequency divider 12, an output frequency control circuit 14 and a gate logic forming circuit 13. The voltage drop of the condenser is detected by a detector 15 due to the separation from the trolley wire at the operating time, inputted to the forming circuit 13 through an ouptput frequency control circuit 14 and an output voltage control circuit 17 together with the outputs from an output condition unit 18 and a converter 19, and controlled so that the motor becomes in generating range. |
