A dual-wound machine comprises a dual-wound generator supplying power to two separate powered zones. The generator comprises a wound rotor with a field winding and a stator with two sets of phase windings and a field control loop that controls the excitation voltage applied to the field winding and therefore the magnetic field produced by the rotor, in order to maintain a constant field flux in the generator and mitigate dynamic coupling between the two sets of phase windings when supplying power to unbalanced loads.

An integrated hybrid rotary assembly is configured to provide power, torque and bi-directional communication to a rotatable sensor, such as a lidar, radar or optical sensor. A common ferrite core is shared by a motor, rotary transformer and radio frequency communication link. This hybrid configuration reduces cost, simplifies the manufacturing process, and can improve system reliability by employing a minimum number of parts. The assembly can be integrated with the sensor unit, which may be used in vehicles and other systems.

A method for tracking time in use of a generating set includes furnishing at least one piece of information characteristic of an operating time of said generator set. An autonomous device for measurement is solidly attached to a chassis of said generator set and has at least two sensors. One sensor is for measurement of a first physical magnitude. Another sensor is for measurement of a second physical magnitude. The anonymous device performs analysis of said first and second physical magnitudes provides for delivering a piece of information representative of an operating state of said generator set, determination of a piece of information representative of a global operating time of said generator set by cumulative time during which said representative information of an operating state is furnished, and storage of said piece of information representative of a global operating time of said generator set.

An integrated hybrid rotary assembly is configured to provide power, torque and bi-directional communication to a rotatable sensor, such as a lidar, radar or optical sensor. A common ferrite core is shared by a motor, rotary transformer and radio frequency communication link. This hybrid configuration reduces cost, simplifies the manufacturing process, and can improve system reliability by employing a minimum number of parts. The assembly can be integrated with the sensor unit, which may be used in vehicles and other systems.

A vibration motor is disclosed. The vibration motor includes a housing; an elastic connecting piece accommodated in the housing; a fixed component; and a vibrating component suspended in the housing by the elastic connecting piece. One of the fixed component and the vibrating component includes a coil, and the other including a magnet. The vibration motor further includes a damping piece integrated with the elastic connecting piece.

A rotor temperature monitoring method and system for a permanent magnet synchronous motor are provided. According to the method and system, an a-phase line current and a b-phase line current of a stator of a permanent magnet synchronous motor are obtained as a first line current and a second line current; further, a line voltage between the a-phase and the b-phase of the stator is obtained and a rotating speed of the rotor of the permanent magnet synchronous motor is obtained; and then, the first line current, the second line current, the line voltage, the rotating speed of the rotor, an inductance parameter of the permanent magnet synchronous motor and a temperature characteristic equation of a permanent magnet of the rotor are substituted into a preset rotor permanent magnet temperature expression to calculate and obtain the temperature of the rotor.

A regulator has a circuit generating an activation command by bringing, to a first voltage higher than a high reference voltage, a bidirectional line connected to a detection circuit for detecting a status of the activation command. The detection circuit comprises generation means for generating a fault signal from a flag indicating a failure of the alternator, linking the line to a ground by means of a switching element, thus bringing the line to a second voltage lower than a fault voltage lower than the high reference voltage, and the control circuit comprises detection means for detecting the fault signal. The control circuit further transmits a setpoint PWM signal having a maximum higher than the high reference voltage and a minimum lower than a low reference voltage higher than the fault voltage, a duty ratio of the setpoint signal being representative of a setpoint voltage (V0) of the regulator.

A protection device for a pulse inverter is provided and is configured to be detachably arranged on an opening of an open housing part of the pulse inverter, wherein the protection device is configured to protect from dirt, mechanical impact and/or electrostatic charging, at least one inner element of the pulse inverter, in particular an electrical system and/or an electronic system, which is arranged in the open housing part. Furthermore, a pulse inverter is provided comprising a housing, as well as an e-machine with a pulse inverter.

A motor includes a shaft, at least two bearings supporting the shaft, a magnet supported by the shaft between the at least two bearings, a stator surrounding the magnet, and a magnetic member arranged between the magnet and at least one of the bearings in a longitudinal direction of the shaft. The magnetic member has a large outer diameter with respect to an outer diameter of the magnet.

A protection device for a pulse inverter is provided and is configured to be detachably arranged on an opening of an open housing part of the pulse inverter, wherein the protection device is configured to protect from dirt, mechanical impact and/or electrostatic charging, at least one inner element of the pulse inverter, in particular an electrical system and/or an electronic system, which is arranged in the open housing part. Furthermore, a pulse inverter is provided comprising a housing, as well as an e-machine with a pulse inverter.