Energy exchanger for an electrical vehicle
First Claim
1. An energy exchanger for an electrical vehicle comprising battery means including a first high voltage D.C. rotatable electrical machine with a series excitation coil and a separate excitation coil;
- a second low voltage D.C. rotatable electrical machine with a separate excitation coil;
means for mechanically coupling both said electrical machines with each other and means for coupling both machines with the vehicle'"'"'s wheels;
means for connecting said first machine to an external electrical supply source during battery charging periods;
first chopper means for supplying a variable current to said separate excitation coils from said battery;
second chopper means for supplying a variable current to the rotor of said second machine and to said series excitation coil;
switch means for connecting the separate excitation coil of said first machine to said first chopper means during vehicle drive periods, and connecting said coil to the battery during charging or regenerative periods.
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Accused Products
Abstract
An energy exchanger for a battery driven vehicle comprising two rotatable electrical machines connected on the same shaft, one of high voltage, the other of low voltage. The electrical machines can each be operated in generator or motor modes and the machines are electrically connected together to the battery on a vehicle via an electrical control circuit such that the machines exchange energy between themselves and the battery, both to drive the vehicle by battery drain and to recharge the battery when the vehicle is decelerating. The battery can be recharged from an external power supply via the machines which then operate in generator mode.
18 Citations
6 Claims
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1. An energy exchanger for an electrical vehicle comprising battery means including a first high voltage D.C. rotatable electrical machine with a series excitation coil and a separate excitation coil;
- a second low voltage D.C. rotatable electrical machine with a separate excitation coil;
means for mechanically coupling both said electrical machines with each other and means for coupling both machines with the vehicle'"'"'s wheels;
means for connecting said first machine to an external electrical supply source during battery charging periods;
first chopper means for supplying a variable current to said separate excitation coils from said battery;
second chopper means for supplying a variable current to the rotor of said second machine and to said series excitation coil;
switch means for connecting the separate excitation coil of said first machine to said first chopper means during vehicle drive periods, and connecting said coil to the battery during charging or regenerative periods. - View Dependent Claims (2, 3, 4, 5, 6)
- a second low voltage D.C. rotatable electrical machine with a separate excitation coil;
Specification