Electric vehicle traction motor control
The electric vehicle traction motor control circuit includes a main thyristor in series with the motor armature. A second thyristor is connected in series with a commutating capacitor across the main thyristor which can be turned off by firing the second thyristor to divert the motor current momentarily into the commutating capacitor. A third thyristor is connected in series with an inductor across the commutating capacitor and serves on firing to reverse the voltage residing on the commutating capacitor following commutation. A circuit is connected to detect the cessation of current flow into the commutating capacitor and acts to fire the third thyristor when such cessation is detected.
- Assignee:
- Lucas Industries Ltd.
- Patent Number(s):
- US 4170750
- OSTI ID:
- 5855006
- Country of Publication:
- United States
- Language:
- English
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Electric vehicle traction motor control
Electric vehicle traction motor control