Vehicle drive system
First Claim
1. A drive system for a vehicle having at least one drive wheel and means for producing a signal for controlling the speed of rotation of said drive wheel, having:
- an electric motor mechanically coupled to said drive wheel;
a rechargeable electric energy accumulator;
an internal combustion engine;
an electric energy generator mechanically coupled to said internal combustion engine;
electric energy transfer means electrically connected to said electric motor, to said generator and to said accumulator to cause a first electric energy flux to pass between said accumulator and said electric motor, a second electric energy flux to pass between said generator and said electric motor, and a third electric energy flux to pass between said generator and said accumulator; and
means to produce a first measurement signal representative of the amount of electric energy stored in said accumulator;
wherein said electric energy transfer means have;
first regulating means to regulate the intensity of said first and of said second electric energy flux in response to a first regulating signal; and
second regulating means to regulate the intensity of said second and of said third electric energy flux in response to a second regulating signal;
and wherein said system also has;
means to produce a second measurement signal representative of the electric power transmitted by said first and said second electric energy flux;
means to produce a third measurement signal representative of the electric power transmitted by said second and said third electric energy flux; and
a control circuit arranged so as to produce said first regulating signal as a function of said speed controlling signal and to produce said second regulating signal as a function of the difference between said third and said second measurement signal.
1 Assignment
0 Petitions
Accused Products
Abstract
The vehicle drive system has an asynchronous motor mechanically coupled to a wheel of the vehicle, a rechargeable accumulator, a first converter interposed between the rechargeable accumulator and the motor and arranged so as to regulate the electric power supplied to the motor and a generator driven by an internal combustion engine, as well as a control circuit. To make it possible to recharge the accumulator under optimum conditions, the system also has a second converter arranged so as to regulate the power supplied by the generator to the accumulator and to the first converter.
43 Citations
3 Claims
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1. A drive system for a vehicle having at least one drive wheel and means for producing a signal for controlling the speed of rotation of said drive wheel, having:
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an electric motor mechanically coupled to said drive wheel; a rechargeable electric energy accumulator; an internal combustion engine; an electric energy generator mechanically coupled to said internal combustion engine; electric energy transfer means electrically connected to said electric motor, to said generator and to said accumulator to cause a first electric energy flux to pass between said accumulator and said electric motor, a second electric energy flux to pass between said generator and said electric motor, and a third electric energy flux to pass between said generator and said accumulator; and means to produce a first measurement signal representative of the amount of electric energy stored in said accumulator; wherein said electric energy transfer means have; first regulating means to regulate the intensity of said first and of said second electric energy flux in response to a first regulating signal; and second regulating means to regulate the intensity of said second and of said third electric energy flux in response to a second regulating signal; and wherein said system also has; means to produce a second measurement signal representative of the electric power transmitted by said first and said second electric energy flux; means to produce a third measurement signal representative of the electric power transmitted by said second and said third electric energy flux; and a control circuit arranged so as to produce said first regulating signal as a function of said speed controlling signal and to produce said second regulating signal as a function of the difference between said third and said second measurement signal. - View Dependent Claims (2, 3)
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Specification