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A cable transportation system has rails and a draw cable, both extending along a transportation path, a drive member for driving the draw cable; at least one vehicle, which moves along the transportation path and has wheels which roll along the rails, and a coupling device for connecting the vehicle

A cable transportation system has rails and a draw cable, both extending along a transportation path, a drive member for driving the draw cable; at least one vehicle, which moves along the transportation path and has wheels which roll along the rails, and a coupling device for connecting the vehicle to the draw cable, at least one passenger station where the vehicle is stopped and an electric machine located on the vehicle and driven by the wheels to generate electric power.

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1. A method of driving a cable transportation system, said method comprising: advancing a passenger vehicle fitted with a plurality of wheels resting on a plurality of rails extending along a transportation path;causing a draw cable extending along the transportation path to drive the passenger vehi

1. A method of driving a cable transportation system, said method comprising: advancing a passenger vehicle fitted with a plurality of wheels resting on a plurality of rails extending along a transportation path;causing a draw cable extending along the transportation path to drive the passenger vehicle, said draw cable being driven by a drive member;stopping the passenger vehicle at a passenger station located along the transportation path;causing the wheels of the passenger vehicle to drive an electric machine to generate electric power on board the vehicle outside said passenger station;causing a selector on board the passenger vehicle to regulate electric power flow to and from the electric machine;regulating selector dissipation of the electric power generated by the electric machine to regulate the braking force of the electric machine;causing a speed sensor to emit a speed signal related to a speed of the passenger vehicle,causing a control unit to compare the speed signal with an acceleration speed curve corresponding to a designated speed, as a function of time, along an acceleration portion of the transportation path, andemitting an actuating signal to regulate electric power supply to the electric machine if the speed signal deviates from the acceleration speed curve by more than a designated acceptance range. 2. The method of claim 1, which includes storing electric power in an accumulator on board the passenger vehicle. 3. The method of claim 1, which includes powering at least one user device on board the passenger vehicle with the electric power generated by the electric machine. 4. The method of claim 1, which includes supplying the electric power stored in an accumulator to the electric machine to power at least one of the wheels, wherein the passenger vehicle is configured to be selectively disconnected from the draw cable. 5. The method of claim 1, which includes operating each electric machine as a generator, a motor, and a brake, wherein the passenger vehicle includes a plurality of electric machines, each electric machine being fitted to a corresponding one of the wheels. 6. The method of claim 1, which includes: causing the control unit to compare the speed signal with a deceleration speed curve corresponding to a designated deceleration speed, as a function of time, along a deceleration portion of the transportation path, andemitting an actuating signal to instantaneously activate a brake if the speed signal exceeds the deceleration speed curve by more than a designated acceptance range. 7. The method of claim 1, which includes: causing the control unit to compare the speed signal with a deceleration speed curve corresponding to a designated deceleration speed, as a function of time, along a deceleration portion of the transportation path, andemitting an actuating signal to regulate electric power supply to the electric machine if the speed signal falls below the deceleration speed curve by more than a designated acceptance range. 8. A method of driving a cable transportation system, said method comprising: advancing a passenger vehicle fitted with a plurality of wheels along a transportation path;causing a draw cable extending along the transportation path to drive the passenger vehicle, said draw cable being driven by a drive member;braking the passenger vehicle to stop the passenger vehicle at one passenger station located along the transportation path;causing a speed sensor to emit a speed signal related to a speed of the passenger vehicle;comparing the speed signal with a deceleration speed curve corresponding to an ideal deceleration speed, as a function of time, along a deceleration portion of the transportation path;causing an electric machine driven by a wheel of the passenger vehicle to generate electric power on board the passenger vehicle irrespective of any braking of the passenger vehicle;storing electric power in an accumulator on board the passenger vehicle;emitting an actuating signal to one of: (i) instantaneously activate a brake if the speed signal exceeds the deceleration speed curve by more than a designated acceptance range, and (ii) regulate electric power supply to the electric machine if the speed signal falls below the deceleration speed curve by more than a designated acceptance range; andpowering at least one user device on board the passenger vehicle with the electric power generated by the electric machine. 9. The method of claim 8, which includes supplying the electric power stored in the accumulator to the electric machine to power at least one of the wheels, wherein the passenger vehicle is configured to be disconnected selectively from the draw cable. 10. The method of claim 8, which includes operating each electric machine as a generator, a motor, and a brake, wherein the passenger vehicle includes a plurality of electric machines, each electric machine being fitted to a corresponding one of the wheels. 11. A cable transportation system including a passenger vehicle drawn by a draw cable, said cable transportation system comprising: a wheel configured to roll along a transportation path, said wheel including a hub configured to rotate about a pin, the hub including an annular portion which defines a rotor seat; andan electric machine fitted to the wheel and driven by the wheel to generate, independent of any braking of any passenger vehicle, electric power on board the passenger vehicle, said electric machine including a stator and a rotor fitted to the hub. 12. The cable transportation system of claim 11, wherein the electric machine is reversible, and configured to supply drive torque to said wheel. 13. The cable transportation system of claim 11, wherein the hub supports a wheel rim, and the wheel rim supports a tire. 14. The cable transportation system of claim 11, which includes at least one bearing interposed between the pin and the hub. 15. The cable transportation system of claim 11, wherein the electric power is used in association of at least one selected from the group consisting of: an interior lighting system of the passenger vehicle, an exterior lighting system of the passenger vehicle, a heating system of the passenger vehicle, and an air-conditioning system of the passenger vehicle. 16. A method of driving a cable transportation system, said method comprising: advancing a passenger vehicle fitted with a plurality of wheels along a transportation path;causing a draw cable extending along the transportation path to drive the passenger vehicle, said draw cable being driven by a drive member;causing a speed sensor to emit a speed signal related to a speed of the passenger vehicle;causing a control unit to compare the speed signal with an acceleration speed curve corresponding to an ideal speed, as a function of time, along an acceleration portion of the transportation path;braking the passenger vehicle to stop the passenger vehicle at one passenger station located along the transportation path;causing an electric machine driven by a wheel of the passenger vehicle to generate electric power on board the passenger vehicle irrespective of any braking of the passenger vehicle;storing electric power in an accumulator on board the passenger vehicle;emitting an actuating signal to regulate electric power supply to the electric machine if the speed signal deviates from the acceleration speed curve by more than a designated acceptance range; andpowering at least one user device on board the passenger vehicle with the electric power generated by the electric machine. 17. The method of claim 16, which includes supplying the electric power stored in the accumulator to the electric machine to power at least one of the wheels, wherein the passenger vehicle is configured to be disconnected selectively from the draw cable. 18. The method of claim 16, which includes operating each electric machine as a generator, a motor, and a brake, wherein the passenger vehicle includes a plurality of electric machines, each electric machine being fitted to a corresponding one of the wheels. 19. A cable transportation system including a passenger vehicle drawn by a draw cable, said cable transportation system comprising: a wheel configured to roll along a transportation path, said wheel including a hub configured to rotate about a pin;an electric machine fitted to the wheel and driven by the wheel to generate, independent of any braking of any passenger vehicle, electric power on board the passenger vehicle, said electric machine including a stator and a rotor fitted to the hub; anda cover formed by two connected flanges, wherein said cover encloses the stator. 20. The cable transportation system of claim 19, wherein the electric machine is reversible, and configured to supply drive torque to said wheel. 21. The cable transportation system of claim 19, wherein the hub supports a wheel rim, and the wheel rim supports a tire. 22. The cable transportation system of claim 19, which includes at least one bearing interposed between the pin and the hub. 23. The cable transportation system of claim 19, wherein the cover is fixed to pin, and is configured to support the stator and configured to protect the electric machine. 24. The cable transportation system of claim 19, wherein the electric power is used in association of at least one selected from the group consisting of: an interior lighting system of the passenger vehicle, an exterior lighting system of the passenger vehicle, a heating system of the passenger vehicle, and an air-conditioning system of the passenger vehicle. 25. A cable transportation system including a passenger vehicle drawn by a draw cable, said cable transportation system comprising: a wheel configured to roll along a transportation path, said wheel including a hub configured to rotate about a pin; andan electric machine fitted to the wheel and driven by the wheel to generate, independent of any braking of any passenger vehicle, electric power on board the passenger vehicle, said electric machine including a stator and a rotor fitted to the hub, wherein the stator includes a core of ferromagnetic material, and an electric winding supported by core. 26. The cable transportation system of claim 25, wherein the electric machine is reversible, and configured to supply drive torque to said wheel. 27. The cable transportation system of claim 25, wherein the hub supports a wheel rim, and the wheel rim supports a tire. 28. The cable transportation system of claim 25, which includes at least one bearing interposed between the pin and the hub. 29. The cable transportation system of claim 25, wherein the electric power is used in association of at least one selected from the group consisting of: an interior lighting system of the passenger vehicle, an exterior lighting system of the passenger vehicle, a heating system of the passenger vehicle, and an air-conditioning system of the passenger vehicle. 30. A cable transportation system including a passenger vehicle drawn by a draw cable, said cable transportation system comprising: a wheel configured to roll along a transportation path, said wheel including a hub configured to rotate about a pin;an electric machine fitted to the wheel and driven by the wheel to generate, independent of any braking of any passenger vehicle, electric power on board the passenger vehicle, said electric machine including a stator and a rotor fitted to the hub; anda speed sensor configured to transmit a speed signal to a control unit. 31. The cable transportation system of claim 30, wherein the electric machine is reversible, and configured to supply drive torque to said wheel. 32. The cable transportation system of claim 30, wherein the hub supports a wheel rim, and the wheel rim supports a tire. 33. The cable transportation system of claim 30, which includes at least one bearing interposed between the pin and the hub. 34. The cable transportation system of claim 30, wherein the electric power is used in association of at least one selected from the group consisting of: an interior lighting system of the passenger vehicle, an exterior lighting system of the passenger vehicle, a heating system of the passenger vehicle, and an air-conditioning system of the passenger vehicle.