Electric vehicle power feed system

Details Electric vehicle power feed system Electric vehicle power feed system

1996-07-18

1998-10-27

Martin, David S.

Electricity: motive power systems

Battery-fed motor systems

318254, 318439, 318434, 318801, H02P 100

Patent

active

058281924

ABSTRACT:
A power feed system for feeding power to an electric vehicle includes a motor driving circuit provided with a smoothing capacitor. The motor driving circuit is capable of preventing the smoothing capacitor from being discharged and has a comparatively short main current supply line to reduce unnecessary power loss. The motor driving circuit converts dc supply power into ac supply power to feed the ac supply power to a motor. The motor driving circuit includes the smoothing capacitor and a plurality of semiconductor switching devices, which are built in the motor. An electromagnetic relay is placed within a case housing the motor driving circuit and the electromagnetic relay is controlled to supply a main current to the motor driving circuit and to interrupt the supply of the main current to the motor driving circuit.

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