Power converter with programmable commutation

Details Power converter with programmable commutation Power converter with programmable commutation

1978-09-19

1981-01-20

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318345C, 318345G, 318493, 363124, 363 54, 363 57, H02P 516

Patent

active

042465222

ABSTRACT:
A power converter having improved efficiency and useful, for example, in the propulsion system of an electric vehicle. The power converter includes a dual chopper having an output level variable over a rather wide range for controlling the speed of the vehicle from stop to cruising. A commutating inverter is transformer coupled to the chopper for commutating thyristors in the chopper. Efficiency is considerably enhanced by programming the amount of energy in the commutating inverter in accordance with the power being delivered by the chopper so as to minimize power losses and thereby increase the range of the vehicle.

REFERENCES:
patent: 3938015 (1976-02-01), Beebe
patent: 3993942 (1976-11-01), Schmidt et al.
patent: 4008423 (1977-02-01), Christianson
patent: 4017777 (1977-04-01), Bailey
patent: 4032825 (1977-06-01), Klinio
patent: 4074175 (1978-02-01), Born et al.

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