System for controlling electric vehicle motor

Details System for controlling electric vehicle motor System for controlling electric vehicle motor

1995-07-13

1997-04-08

Sircus, Brian

Electricity: motive power systems

Battery-fed motor systems

318759, 318376, 320 1, 307 107, 307326, H02P 300

Patent

active

056191073

ABSTRACT:
A device for controlling an electric vehicle motor that optimally discharges a smoothing capacitor, connected to the input terminals of an inverter in accordance with the condition of an electric vehicle. The device includes a motor drive means, the smoothing capacitor connected in parallel with the motor drive means, switching means operating in connection with an operation switch operated by the vehicle operator, discharging means for discharging the smoothing capacitor, draw detecting means, and discharge restricting means. The system opens the switching means to shut off output from the battery and to discharge the smoothing capacitor when the switching means is open, but restricts discharging during a towing or drawing condition of the electric vehicle.

REFERENCES:
patent: 4093900 (1978-06-01), Plunkett
patent: 4352049 (1982-09-01), Franz, Jr.
patent: 5034669 (1991-07-01), Sako et al.
patent: 5294874 (1994-03-01), Hessenberger et al.
patent: 5412293 (1995-05-01), Minezawa et al.
patent: 5420491 (1995-05-01), Kanzaki et al.
English language Abstracts of JP 5-184016 and 4-165901.

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