Provided is a rotating electrical machine wherein it is possible to sufficiently cool an electronic device attached to a rotor by means of a liquid refrigerant. A rotor for a rotating electrical machine is provided with a shaft supported in a rotatable manner, a rotor core secured to the shaft, an electronic device disposed so as to rotate along with the shaft and the rotor core, a coil wound around the rotor core and connected to the electronic device, and a cooling structure for sequentially cooling the electronic device and the coil by means of a liquid refrigerant supplied from the shaft.

A two phase wind power generator system for producing an electrical output having twice the voltage relative to single phase systems includes a shaft connected to an external shaft rotator, a generator aspect integral with the shaft and an output aspect connected to the generator aspect. The generator aspect includes a power source, switching commutator with integrated brushes, first rotor assembly, first stator assembly, second rotor assembly, and a second stator assembly, with the switching commutator, the first rotor assembly and second rotor assembly discretely mounted to shaft, with the rotor assemblies oriented 180 degrees out of phase. The power source energizes the rotor assemblies, and when the shaft is rotated by an external force, electricity is induced in the stator assemblies. The output aspect is operative to receive electricity induced thereby and convert it to a desired form of electrical current as well as combine it for output.

A gas turbine power generation system is configured by a gas turbine, a main power generator which is coupled to a rotor of the gas turbine through a rotation shaft, a rotation rectifier which converts a three-phase AC current into a DC current and transfers the DC current to a field magnet winding wire of the main power generator, an AC exciter which is configured by an armature winding wire, a d-axis field magnet winding wire, and a q-axis field magnet winding wire, and transfers the three-phase AC current generated at the armature winding wire to the rotation rectifier, an excitation device which drives the AC exciter at the time of start-up of the main power generator, and an excitation power supply which supplies a current to the excitation device.

A gas turbine power generation system is configured by a gas turbine, a main power generator which is coupled to a rotor of the gas turbine through a rotation shaft, a rotation rectifier which converts a three-phase AC current into a DC current and transfers the DC current to a field magnet winding wire of the main power generator, an AC exciter which is configured by an armature winding wire, a d-axis field magnet winding wire, and a q-axis field magnet winding wire, and transfers the three-phase AC current generated at the armature winding wire to the rotation rectifier, an excitation device which drives the AC exciter at the time of start-up of the main power generator, and an excitation power supply which supplies a current to the excitation device.

A singly-excited flux-switching electrical machine, that includes field coils and phase windings, is provided. The field coils and the phase windings are accommodated respectively in the unevenly shaped notches of a stator, such that the field coils and phase windings are radially offset.

A singly-excited flux-switching electrical machine, that includes field coils and phase windings, is provided. The field coils and the phase windings are accommodated respectively in the unevenly shaped notches of a stator, such that the field coils and phase windings are radially offset.

An electrical rotating machine, such as a generator or motor, communicates power from a stationary location to the rotating rotor of the rotating machine via opposed pairs of capacitor plates, one plate of each pair rotating with the rotor and one plate of each pair fixed not to rotate. In one embodiment, separation between the plates of the pair is provided by a cushion of entrapped air.

An electrical rotating machine, such as a generator or motor, communicates power from a stationary location to the rotating rotor of the rotating machine via opposed pairs of capacitor plates, one plate of each pair rotating with the rotor and one plate of each pair fixed not to rotate. In one embodiment, separation between the plates of the pair is provided by a cushion of entrapped air.

A position of a rotor of a synchronous generator is measured under no load and under load. An angle of difference between where a terminal voltage crosses a zero-point and the marked position of the rotor under no load is calculated. A load angle is of the synchronous generator based the no load angle of difference and the load angle of difference.

A position of a rotor of a synchronous generator is measured under no load and under load. An angle of difference between where a terminal voltage crosses a zero-point and the marked position of the rotor under no load is calculated. A load angle is of the synchronous generator based the no load angle of difference and the load angle of difference.