1967-02-01

A HIGH PERFORMANCE AC ELECTRIC DRIVE SYSTEM 670178

The recent advance in power handling capacity of semiconductor devices makes it possible to replace DC and AC commutator machines for variable speed applications by high-speed, light-weight, squirrel-cage induction motors. This paper describes the development of a high-performance electric drive system which uses squirrel-cage induction motors in which slip frequency is externally controlled. This makes it suitable for traction applications. Two systems were specifically built for installation in a battery-powered automobile and a fuel-cell powered delivery truck. The performance of these vehicles has proven the technical feasibility of an electric powered vehicle.

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