A rotor device of an integrated starter-generator motor and a rotor working system are disclosed in the present invention. The rotor device is a monobloc cast, that is machined, to form an inseparable one-piece structure. The rotor device takes the shape of a straw hat and is provided with an external side surface of a hat top being surface (11), an external side surface of a hat brim being surface (13), an inner side surface of the hat brim being surface (12) and a surface (14) which connects the surface (11) with the surface (13). The surface (11) of the rotor device is provided with multiple through holes (1) used for fixing with a crankshaft (82). The surface (12) of the rotor device is provided with multiple threaded holes (2) used for connecting with a clutch. The threaded holes (2) pass through the surface (13) corresponding to the surface (12).

An exemplary electrical system may include a power plant and a dual motor/generator assembly coupled to each other. The power plant may be a gas turbine engine, and may be operable to provide motive power. The dual motor/generator assembly may include a first motor/generator and a second motor/generator operatively coupled to a common gear shaft, and a gear box configured to couple the first motor/generator and the second motor/generator to the power plant. The first motor/generator and the second motor/generator may be operable to selectively provide power to or extract power from the power plant. The dual motor/generator assembly may be configured such that the first motor/generator and the second motor/generator may operate together at part loads, or individually as a main and a redundant, backup to the other.

A method is disclosed for generating and distributing electric power for localized use. The method entails providing an enclosed building having an air conditioning and ventilation unit for supplying cooled air within the building, the unit including a closed loop circuit configured to operate a closed loop refrigeration cycle, including a compressor operable to compress a working fluid of the closed loop circuit. The method further includes engaging an internal combustion engine with the compressor and operating the internal combustion engine to drive the compressor, thereby transferring energy to the refrigeration cycle. The method may also involve engaging an electric motor with the compressor and operating the electric motor to drive the compressor, thereby transferring energy to the refrigeration cycle.

A method is disclosed for generating and distributing electric power for localized use. The method entails providing an enclosed building having an air conditioning and ventilation unit for supplying cooled air within the building, the unit including a closed loop circuit configured to operate a closed loop refrigeration cycle, including a compressor operable to compress a working fluid of the closed loop circuit. The method further includes engaging an internal combustion engine with the compressor and operating the internal combustion engine to drive the compressor, thereby transferring energy to the refrigeration cycle. The method may also involve engaging an electric motor with the compressor and operating the electric motor to drive the compressor, thereby transferring energy to the refrigeration cycle.

A rotatable electrical machine (1), particularly for a motor vehicle starter. The machine has an axis of rotation (X) and comprises a stator (2a) including: a generator field coil (4); including at least one wire (4a) comprising aluminum; and at least one pole shoe (3), including a winding core (31) whereon at least part of the stator winding is formed. The core has a center and a perimeter having at least one curved portion when observing the perimeter along an observational axis perpendicular to the rotational axis and through the center of the core.

A rotatable electrical machine (1), particularly for a motor vehicle starter. The machine has an axis of rotation (X) and comprises a stator (2a) including: a generator field coil (4); including at least one wire (4a) comprising aluminum; and at least one pole shoe (3), including a winding core (31) whereon at least part of the stator winding is formed. The core has a center and a perimeter having at least one curved portion when observing the perimeter along an observational axis perpendicular to the rotational axis and through the center of the core.

A brushless, three phase wound field synchronous machine (WFSM) provides an electromechanical power transfer system wherein it may serve as both a starter and a generator. Power for the excitation system of the WFSM is provided by a three phase flux switching generator (FSG). The three phase FSG also provides position sensor functionality for the WFSM when the WFSM operates in the starter/motor mode.

An apparatus for operating simultaneously as DC (Direct Current) motor and DC generator is disclosed. Four permanent magnets (101, 102, 103, 104) are placed to be able to rotate with a shaft and two coils (201, 202) are placed outside the circumference of the permanent magnets and one secondary cell battery (301) is used to supply electric current to the coils. One device (501) for making electric current flow alternately in the coils is placed. If electric current flows in a first coil (201) by the secondary cell battery, the shaft rotates and the rotating permanent magnets generate electric power in a second coil (202). Electric current flows from the second coil to the first coil. Electric current always flows in one direction in the coils as the shaft rotates in one direction.

An apparatus for operating simultaneously as DC (Direct Current) motor and DC generator is disclosed. Four permanent magnets (101, 102, 103, 104) are placed to be able to rotate with a shaft and two coils (201, 202) are placed outside the circumference of the permanent magnets and one secondary cell battery (301) is used to supply electric current to the coils. One device (501) for making electric current flow alternately in the coils is placed. If electric current flows in a first coil (201) by the secondary cell battery, the shaft rotates and the rotating permanent magnets generate electric power in a second coil (202). Electric current flows from the second coil to the first coil. Electric current always flows in one direction in the coils as the shaft rotates in one direction.

According to one embodiment, a driving device includes a power converter, a voltage controller and a phase adjuster. The phase adjuster is configured to execute a first phase control process of receiving first information relating to a relationship between a phase of a motor current flowing through the motor and a rotational position of the motor, and adjusting the phase of the driving voltage, based on the first information. The phase adjuster is configured to execute a second phase control process of receiving second information relating to a magnitude of the motor current and third information relating to a rotational speed of the motor, and adjusting the phase of the driving voltage, based on the second information and the third information.