An electric motor communication system for use with a fluid moving system and using at least one wireless sensor network is provided. The electric motor communication system includes an electric motor that includes a motor management device configured to transmit and receive input signals via the wireless sensor network, and a processing device coupled to said motor management device and configured to control said electric motor based at least in part on input signals received at said motor management device. The electric motor communication system also includes at least one external device configured to collect data and to transmit said input signals, via the wireless sensor network, to said electric motor.

A system includes an electric motor having a terminal box into which a three-phase power cable is guided and in which the stator winding, e.g., the wire ends of the winding wire of the stator winding, of the electric motor is electrically connected to electrical lines of the three-phase power cable. A data collector is arranged in the terminal box of the electric motor, which has a data store and which is electrically connected to at least one sensor arranged in and/or on the electric motor, and the data collector has an electronic circuit for the modulation and demodulation of voltage portions.

A system includes an electric motor having a terminal box into which a three-phase power cable is guided and in which the stator winding, e.g., the wire ends of the winding wire of the stator winding, of the electric motor is electrically connected to electrical lines of the three-phase power cable. A data collector is arranged in the terminal box of the electric motor, which has a data store and which is electrically connected to at least one sensor arranged in and/or on the electric motor, and the data collector has an electronic circuit for the modulation and demodulation of voltage portions.

One example includes a rotary electric machine. The device includes at least one sensor. Each of the at least one sensor can be configured to provide a sensor signal in a first data format, the sensor signal providing an indication of a respective one of a plurality of operational characteristics of the rotary electric machine. The device also includes a programmable interface configured to receive the sensor signal from each of the at least one sensor and to translate the first data format associated with each of the at least one sensor into a second data format associated with a respective type of sensor corresponding to the respective at least one sensor and to provide at least one output signal in the second data format. Each of the at least one output signal can correspond to at least one of the operational characteristics.

One example includes a rotary electric machine. The device includes at least one sensor. Each of the at least one sensor can be configured to provide a sensor signal in a first data format, the sensor signal providing an indication of a respective one of a plurality of operational characteristics of the rotary electric machine. The device also includes a programmable interface configured to receive the sensor signal from each of the at least one sensor and to translate the first data format associated with each of the at least one sensor into a second data format associated with a respective type of sensor corresponding to the respective at least one sensor and to provide at least one output signal in the second data format. Each of the at least one output signal can correspond to at least one of the operational characteristics.

The subject of the invention is a method and a device for determination of a torsional deflection of a rotation shaft in the electromechanical drivetrain. The method uses a current and a voltage signals measurement of the driving electrical machine and an angular speed measurement of the shaft of the drivetrain and includes the step of measuring of a voltage U.sub.DC of the DC link unit of a converter; the step of calculating a value of a load torque T.sub.load of the driving electrical machine; the step of detecting of an oscillation O.sub.SC(T.sub.load) in the load torque T.sub.load and calculation magnitudes of characteristic frequencies of Fast Fourier Transform FFT(U.sub.DC) of the voltage U.sub.DC of DC link unit; the step of determining of a timestamp indicators t.sub.Tload for oscillations O.sub.SC(T.sub.load) and t.sub.FFT of U.sub.DC for magnitudes of characteristic frequencies of FFT(U.sub.DC) of the voltage U.sub.DC of DC link unit; the step of comparing the value of the timestamp indicators t.sub.Tload and t.sub.FFT and determining a torsional deflection of the rotation shaft if t.sub.Tload<t.sub.FFT; the step of presenting the result of the comparison to the user in a diagnostic unit.

The subject of the invention is a method and a device for determination of a torsional deflection of a rotation shaft in the electromechanical drivetrain. The method uses a current and a voltage signals measurement of the driving electrical machine and an angular speed measurement of the shaft of the drivetrain and includes the step of measuring of a voltage U.sub.DC of the DC link unit of a converter; the step of calculating a value of a load torque T.sub.load of the driving electrical machine; the step of detecting of an oscillation O.sub.SC(T.sub.load) in the load torque T.sub.load and calculation magnitudes of characteristic frequencies of Fast Fourier Transform FFT(U.sub.DC) of the voltage U.sub.DC of DC link unit; the step of determining of a timestamp indicators t.sub.Tload for oscillations O.sub.SC(T.sub.load) and t.sub.FFT of U.sub.DC for magnitudes of characteristic frequencies of FFT(U.sub.DC) of the voltage U.sub.DC of DC link unit; the step of comparing the value of the timestamp indicators t.sub.Tload and t.sub.FFT and determining a torsional deflection of the rotation shaft if t.sub.Tload<t.sub.FFT; the step of presenting the result of the comparison to the user in a diagnostic unit.

A motor control assembly for an electric motor. The motor control assembly is configured to be coupled to the electric motor, and includes a wireless communication module, an input power connector, and an inverter module. The wireless communication module is configured to receive a wireless signal from a system controller. The input power connector is configured to receive a DC voltage from an external power supply module. The inverter module is coupled to the wireless communication module and the input power connector. The inverter module is configured to convert the DC voltage to an AC voltage to operate the electric motor according to the wireless signal.

A motor control assembly for an electric motor. The motor control assembly is configured to be coupled to the electric motor, and includes a wireless communication module, an input power connector, and an inverter module. The wireless communication module is configured to receive a wireless signal from a system controller. The input power connector is configured to receive a DC voltage from an external power supply module. The inverter module is coupled to the wireless communication module and the input power connector. The inverter module is configured to convert the DC voltage to an AC voltage to operate the electric motor according to the wireless signal.

A rotary electric machine includes a bearing that holds a rotation shaft and is capable of rotating the rotation shaft, a housing accommodating the bearing, a rotor that is fixed to the rotation shaft and rotates, and a stator that is fixed to the housing. The stator includes a stator core including a tooth portion protruding toward the rotor and extending along the rotation shaft, a winding wound around the stator core, and magnetic detectors attached to an end portion of the stator core in a direction in which the rotation shaft extends while being separated from each other in a rotation direction of the rotation shaft.