Control method for a reversible motor - generator electrical machine for a motor vehicle and control installation for the implementation of such method

Claim 1

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the machine is controlled to operate as a starter motor, the method including establishing a regulated voltage from the battery voltage which is higher than said battery voltage, and using this regulated voltage at least for supplying the armature with power.

Claim 2

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the machine is controlled to operate as a starter motor, the method including establishing a regulated voltage from the battery voltage which is higher than said battery voltage, and using this regulated voltage at least for supplying the armature with power.

Claim 10

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the excitation is so regulated as to obtain a maximum torque for each speed of rotation and the control is such that a coefficient (k) of proportionality between the electromotive force (e) and the speed of rotation (ω) is such that K=U/2ω, U representing the armature supply voltage.

Claim 11

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the excitation is so regulated as to obtain a maximum torque for each speed of rotation and the control is such that a coefficient (k) of proportionality between the electromotive force (e) and the speed of rotation (ω) is such that K=U/2ω, U representing the armature supply voltage.

Claim 12

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the excitation is so regulated as to obtain a maximum torque for each speed of rotation and wherein the excitation is operated from a given speed.

Claim 13

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the excitation is so regulated as to obtain a maximum torque for each speed of rotation and wherein the excitation is operated from a given speed.

Claim 14

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the machine is operated as a motor and the strength of the current flowing in the armature is limited to a predetermined value for speeds of rotation ranging from zero speed to a limit value and wherein said armature current is maintained at a constant value over the whole speed range.

Claim 15

A method of controlling a reversible electrical machine, which is capable of operating either as a generator (alternator) or as a motor, intended for a motor vehicle, said method comprising providing a machine comprising an armature winding, a regulator capable of regulating the voltage delivered by the armature to the electrical system of the vehicle and an inductor winding, the inductor winding being controlled during operation as an alternator by said regulator and operating said machine as a motor by controlling at least one of the supply voltage for the armature and the excitation in order to obtain the desired torque-speed characteristics, wherein the machine is operated as a motor and the strength of the current flowing in the armature is limited to a predetermined value for speeds of rotation ranging from zero speed to a limit value and wherein said armature current is maintained at a constant value over the whole speed range.