Vehicle drive system
AssigneeSMH Management Services AG
InventorRene Jeanneret
Life of this patent
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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.
Claims3
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.
Dependencies are inferred from the claim text.