A system for providing electrical power to a facility includes a generator configured to generate electrical power for the facility when a drive-shaft of the generator is rotated. A motor is configured to provide torque to rotate the generator drive-shaft and to be driven by a first power supply. A mechanical energy provider is configured to provide torque to the drive-shaft using mechanical energy generated from an intermittent local power source. The system is configured to defer to the mechanical energy provider to rotate the drive-shaft such that, when the intermittent local power source is active, less power is needed from the first power supply to power the motor than when the intermittent local power source is inactive.

The power converter is a device that aims to provide an improved design for a power generator using multiple independent rotor and stator assemblies. To accomplish this, the device includes a drive motor that runs a generator that has dual magnetic rotors, wherein the whole assembly is mounted on a single stabilizing post that acts as the stator coil for the drive motor. Preferably, the generator comprises two magnetic rotors, one of which has an in-runner configuration, and the other has an out-runner configuration. The two magnetic rotors, arranged in the two different configurations, generate power that is much greater that the input energy provided to run the top drive motor. Thus, the device includes an assembly formed of three magnetic rotors, wherein a small amount of power provided to a driving motor generates a larger magnitude of power, that could be recovered and saved as usable energy.

The power converter is a device that aims to provide an improved design for a power generator using multiple independent rotor and stator assemblies. To accomplish this, the device includes a drive motor that runs a generator that has dual magnetic rotors, wherein the whole assembly is mounted on a single stabilizing post that acts as the stator coil for the drive motor. Preferably, the generator comprises two magnetic rotors, one of which has an in-runner configuration, and the other has an out-runner configuration. The two magnetic rotors, arranged in the two different configurations, generate power that is much greater that the input energy provided to run the top drive motor. Thus, the device includes an assembly formed of three magnetic rotors, wherein a small amount of power provided to a driving motor generates a larger magnitude of power, that could be recovered and saved as usable energy.

A compound motor-generator system including a first motor-generator and a second motor-generator. The first motor generator includes a stator having a set of three-phase field windings and a first rotor disposed inside and coaxial with the stator and configured to rotate relative to the stator. The second motor-generator includes a rotational stator and a second rotor coupled to a common shaft with the rotor of the first motor-generator and disposed inside and coaxial to the rotational stator. The rotational stator is configured to rotate relative to the second rotor and at a higher rotational speed than the second rotor.

Systems and apparatuses include an asynchronous electrical machine coupled to an engine, a power supply selectively coupled to the electrical machine by a power supply switch device, and an electrical output coupled to the electrical machine by an output switch device. The electrical machine is structured to produce electricity when the power supply switch device is open, the output switch device is closed, and the electrical machine is mechanically driven by the engine, or perform as a starter motor to start the engine when the power supply switch device is closed, the output switch device is open, and the electrical machine mechanically drives the engine.

Systems and apparatuses include an asynchronous electrical machine coupled to an engine, a power supply selectively coupled to the electrical machine by a power supply switch device, and an electrical output coupled to the electrical machine by an output switch device. The electrical machine is structured to produce electricity when the power supply switch device is open, the output switch device is closed, and the electrical machine is mechanically driven by the engine, or perform as a starter motor to start the engine when the power supply switch device is closed, the output switch device is open, and the electrical machine mechanically drives the engine.

A system for load balancing on a multi-phase power line connected to a single phase lateral power line, includes a contactor configured to selectively connect each phase of the multi-phase power line to the single phase lateral power line. There is a phase change device connected in parallel with the contactor and a controller. During the phase change state, the controller connects the input of the phase change device to the multi-phase power line and connects the output of the phase change device the single phase lateral power line. The controller causes the phase change device to output a voltage to the single phase lateral line initially aligned with the first phase and then rotated to align with the second phase and causes the contactor changes connection to the second phase of the multi-phase power line and disconnect the phase change device from the power lines.

A system for load balancing on a multi-phase power line connected to a single phase lateral power line, includes a contactor configured to selectively connect each phase of the multi-phase power line to the single phase lateral power line. There is a phase change device connected in parallel with the contactor and a controller. During the phase change state, the controller connects the input of the phase change device to the multi-phase power line and connects the output of the phase change device the single phase lateral power line. The controller causes the phase change device to output a voltage to the single phase lateral line initially aligned with the first phase and then rotated to align with the second phase and causes the contactor changes connection to the second phase of the multi-phase power line and disconnect the phase change device from the power lines.

A compound motor-generator system including a first motor-generator and a second motor-generator. The first motor generator includes a stator having a set of three-phase field windings and a first rotor disposed inside and coaxial with the stator and configured to rotate relative to the stator. The second motor-generator includes a rotational stator and a second rotor coupled to a common shaft with the rotor of the first motor-generator and disposed inside and coaxial to the rotational stator. The rotational stator is configured to rotate relative to the second rotor and at a higher rotational speed than the second rotor.

An electric drive unit includes a multi-phase AC motor including a plurality of first terminals, and a power converter including a plurality of second terminals. The power converter is fixed to an electric motor case so as to partially overlap the AC motor in an axial direction with a wall portion interposed therebetween. Each first terminal includes a first extended portion extending from the stator along the axial direction, and a first fastening portion. Each second terminal includes a second extended portion extending along an extending direction at a portion of the power converter that does not overlap the AC motor in the axial direction; and a second fastening portion. The electric motor case includes a communication hole formed in the wall portion, and a service hole formed in a portion located on an extension line of the fastener parallel to an insertion direction of the fastener.