A load protection system and a method of protecting a load. The load protection system includes a PLC transmitter module and a PLC receiver module, which are configured to communicate a plurality of bits of data, each bit transmitted near a zero-crossing of a voltage on the power lines supplying power to the load, in the form of a high frequency burst of pulses. The pulses are structured in two patterns. The first pattern serves to identify the start of the second pattern, and the second pattern includes the data. The first pattern is unique and not represented within the second pattern. The load may be a motor, and the data may include a parameter value representing a parameter of the motor.

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.

An insulation deterioration detection device which is mounted in an inverter device including a plurality of switching elements includes: a frequency component extractor which extracts the same frequency component as a frequency of the three-phase alternating current power from the current detection signal of an electric motor winding wire connected to the switching element; and an insulation deterioration detection controller which performs a first switching operation for turning on the switching element and turning off the other switching elements and stores in a first storage device the frequency component extracted by the frequency component extractor during an execution period of the first switching operation, in which it is determined whether insulation deterioration of the electric motor occurs at least based on a value stored in the first storage device.

Methods and modules for protecting pumps are provided, the modules having a sensor for detecting leaks of the pump seal, a sensor for detecting rain and/or a sensor for detecting that the pump is running dry and thus is overheated. Each sensor communicates with a circuitry configured to shut down the pump until the problem is resolved and to send a notice or alarm to a person or a system. A reset button may be provided to override the shutdown of the pump by the circuitry. Methods of using the modules are also provided.

A load protection system and a method of protecting a load. The load protection system includes a PLC transmitter module and a PLC receiver module, which are configured to communicate a plurality of bits of data, each bit transmitted near a zero-crossing of a voltage on the power lines supplying power to the load, in the form of a high frequency burst of pulses. The pulses are structured in two patterns. The first pattern serves to identify the start of the second pattern, and the second pattern includes the data. The first pattern is unique and not represented within the second pattern. The load may be a motor, and the data may include a parameter value representing a parameter of the motor.

Disclosed is a vehicle drive device including: a rotary electric machine including a rotor and a stator; a housing member forming a housing chamber that houses the rotary electric machine; a cover member connected to one end side of the housing member in an axial direction, facing the rotary electric machine in the axial direction, and including a support portion that rotatably supports the rotor; a power switching element electrically connected to a coil of the stator; and a smoothing capacitor electrically connected to the power switching element. The power switching element and the smoothing capacitor are fixed to the cover member and disposed between the cover member and the rotary electric machine in the axial direction. The smoothing capacitor overlaps the power switching element when viewed in a radial direction.

A vehicle drive device includes: a rotary electric machine including a rotor and a stator; a housing member forming a housing chamber that houses the rotary electric machine; a cover member connected to one end side of the housing member in an axial direction, facing the rotary electric machine in the axial direction, and including a bearing support portion that rotatably supports the rotor; a power switching element electrically connected to a coil of the stator; and a smoothing capacitor electrically connected to the power switching element. The smoothing capacitor is disposed on a radially outer side of the power switching element when viewed in the axial direction.

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 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.

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.