Abstract: System for measuring motor bearings consumption of railway vehicles, comprising: a phonic wheel, arranged to be fixed to a shaft of a rotor, having a profile including an alternation of teeth and holes; a sensor, arranged to measure a punctual air-gap between the teeth of the phonic wheel and said sensor during rotation of the shaft, said sensor generating a basic sinusoidal signal function of said profile, wherein the basic sinusoidal signal is superimposed to a modulating wave, representative of a radial motion of the shaft, the basic signal and the modulating wave forming a complete signal; characterized in that the sensor further comprises: a control unit arranged to measure a maximum and a minimum amplitude value of the complete signal, said maximum and minimum amplitude values representing the maximum and minimum air-gap between the phonic wheel and the sensor, and for calculating an air-gap swing value; memory means arranged to store said air-gap swing value; wherein said sensor is arranged to send to

Abstract: The present invention relates to a method for determining a state of a bearing of a three phase electric machine, the electric machine having a rotor, which is supported by the bearing, the electric machine being connected to a three phase inverter for supplying the electric machine with electric power, the three phase inverter being controlled to apply a pulse width modulation with a predefined scheme to create three phase currents, the method comprises: —determining a first phase current provided to the electric machine; —determining a second phase current provided to the electric machine, the second phase current being different to the first phase current; —determining the power spectral density of the park's vector based on the first phase current and the second phase current; —determining an amplitude of the power at a predefined frequency of the power spectral density, wherein the predefined frequency depends on the rotational speed of the rotor and the scheme of the pulse width modulation; —comparing t

Abstract: System for measuring motor bearings consumption of railway vehicles, comprising: a phonic wheel, arranged to be fixed to a shaft of a rotor, having a profile including an alternation of teeth and holes; a sensor, arranged to measure a punctual air-gap between the teeth of the phonic wheel and said sensor during rotation of the shaft, said sensor generating a basic sinusoidal signal function of said profile, wherein the basic sinusoidal signal is superimposed to a modulating wave, representative of a radial motion of the shaft, the basic signal and the modulating wave forming a complete signal; characterized in that the sensor further comprises: a control unit arranged to measure a maximum and a minimum amplitude value of the complete signal, said maximum and minimum amplitude values representing the maximum and minimum air-gap between the phonic wheel and the sensor, and for calculating an air-gap swing value; memory means arranged to store said air-gap swing value; wherein said sensor is arranged to send to

Abstract: The present invention relates to a method for determining a state of a bearing of a three phase electric machine, the electric machine having a rotor, which is supported by the bearing, the electric machine being connected to a three phase inverter for supplying the electric machine with electric power, the three phase inverter being controlled to apply a pulse width modulation with a predefined scheme to create three phase currents, the method comprises: —determining a first phase current provided to the electric machine; —determining a second phase current provided to the electric machine, the second phase current being different to the first phase current; —determining the power spectral density of the park's vector based on the first phase current and the second phase current; —determining an amplitude of the power at a predefined frequency of the power spectral density, wherein the predefined frequency depends on the rotational speed of the rotor and the scheme of the pulse width modulation; —comparing t

Abstract: A system for monitoring a pantograph of a railway vehicle, the pantograph being adapted to be connected to a catenary and electrically connected to a traction unit, the catenary being adapted to provide an alternating current to the railway vehicle, the system further including: a voltage step detection device for detecting a voltage step of a pantograph voltage at the pantograph, a zero crossing detection device for detecting a zero crossing of a line current, the line current being a portion of a pantograph current provided to the traction unit, the pantograph current being the current flowing through the pantograph; and a bouncing detection portion adapted to determine at least one bouncing time of the pantograph based on one or more detected voltage steps of the voltage step detection device and/or one or more detected zero crossings of the zero crossing detection device.

Abstract: An electrical power supply system for an electrically propelled vehicle provided with a traction unit and an electrical connector and moving along a circulation rail includes an external power supply zone having a supply line extending along the circulation rail for connection with the electrical connector, and an autonomous power supply zone, located after the external power supply zone along the circulation rail. The supply line includes a main section. The supply line includes a terminal section, extending along the circulation rail in the external power supply zone at least between a first end of the main section and the autonomous power supply zone, for connection with the electrical connector, and a diode, electrically connecting the first end of the main section and a second end of the terminal section and designed to let an electrical current pass through from the main section to the terminal section.

Abstract: A system for monitoring a pantograph of a railway vehicle, the pantograph being adapted to be connected to a catenary and electrically connected to a traction unit, the catenary being adapted to provide an alternating current to the railway vehicle, the system further including: a voltage step detection device for detecting a voltage step of a pantograph voltage at the pantograph, a zero crossing detection device for detecting a zero crossing of a line current, the line current being a portion of a pantograph current provided to the traction unit, the pantograph current being the current flowing through the pantograph; and a bouncing detection portion adapted to determine at least one bouncing time of the pantograph based on one or more detected voltage steps of the voltage step detection device and/or one or more detected zero crossings of the zero crossing detection device.

Abstract: An electrical power supply system for an electrically propelled vehicle provided with a traction unit and an electrical connector and moving along a circulation rail includes an external power supply zone having a supply line extending along the circulation rail for connection with the electrical connector, and an autonomous power supply zone, located after the external power supply zone along the circulation rail. The supply line includes a main section. The supply line includes a terminal section, extending along the circulation rail in the external power supply zone at least between a first end of the main section and the autonomous power supply zone, for connection with the electrical connector, and a diode, electrically connecting the first end of the main section and a second end of the terminal section and designed to let an electrical current pass through from the main section to the terminal section.