A rotor pack for a generator has an exciter rotor rotating with a shaft. A rectifier assembly is in electric communication with the exciter rotor to receive AC current and rectify the AC current into a DC voltage. Positive and negative busses extend from the rectifier assembly to a negative rail and a positive rail on a connection assembly. The negative rail is in contact with the shaft to provide a ground connection. The negative and positive rails are formed of a metal. The negative and positive rails are connected to a main field winding. A high speed generator is also disclosed.

An actuator includes two abutment elements and an adjusting device for changing their spacing in a translational displacement direction. A support element is provided between the abutment elements, a drive motor is supported by the support element, a first spindle nut is rotatably supported by the support element, a second spindle nut is rotatably supported by the support element, a first spindle engages the first spindle nut and is connected to one abutment element, and a second spindle engages the second spindle nut and is connected to the other abutment element. Two limit switches are mounted on a switch support on the support element and spaced apart from each other in the translational displacement direction. A first limit switch actuating element is attached to one of the abutment elements, and a second limit switch actuating element is attached to one of the spindles.

In one embodiment, a generator includes an alternating current exciter to output first, second and third alternating currents respectively having first, second and third phases, and a rotary rectifier to convert the first, second and third alternating currents into first, second and third direct currents, respectively. The generator further includes a rotating shaft on which the exciter and the rectifier are mounted, and plural conductors mounted on the shaft, and including one or more first conductors, one or more second conductors and one or more third conductors to respectively supply the first, second and third alternating currents from the exciter to the rectifier. The plural conductors include one or more conductor groups in each of which two or more conductors are collectively arranged, and each of the conductor groups includes the two or more conductors arranged to cancel a magnetic field around each conductor in the same group.

In one embodiment, a generator includes an alternating current exciter to output first, second and third alternating currents respectively having first, second and third phases, and a rotary rectifier to convert the first, second and third alternating currents into first, second and third direct currents, respectively. The generator further includes a rotating shaft on which the exciter and the rectifier are mounted, and plural conductors mounted on the shaft, and including one or more first conductors, one or more second conductors and one or more third conductors to respectively supply the first, second and third alternating currents from the exciter to the rectifier. The plural conductors include one or more conductor groups in each of which two or more conductors are collectively arranged, and each of the conductor groups includes the two or more conductors arranged to cancel a magnetic field around each conductor in the same group.

The present invention relates to a method for increasing the efficiency of an energy transfer device (100) with which electrical energy is converted contactlessly into electrical energy with the aid of a magnetic field in order to electrically excite a rotor of an electrical machine, comprising the step of:

arranging an additional electrically conductive material layer (13) on at least one active part (12, 19, 35, 45) of the energy transfer device (100), wherein an active part of the energy transfer device (100) is a part of the energy transfer device (100) which is at least partially exposed to the magnetic field used for energy transfer, and wherein the electrical conductivity of the additional material layer (13) is greater than the electrical conductivity of the at least one active part (12, 19, 35, 45). Moreover, the invention relates to an energy transfer device (100) and to a use of an electrically conductive material.

A field coil type rotating electric machine includes a field coil having a serially-connected coil section pair consisting of first and second coil sections, a diode having its cathode and anode respectively connected to opposite ends of the serially-connected coil section pair, a rotating shaft, and a rotor having main pole portions radially protruding from a rotor core. In the rotating electric machine, there are formed both a series resonance circuit including the first coil section and at least one capacitor and a parallel resonance circuit including the second coil section and the at least one capacitor. Electronic components electrically connected with the field coil, which include the diode and the at least one capacitor, are arranged so that an overall center of gravity of all the electronic components is located closer than each of centers of gravity of the electronic components to a central axis of the rotating shaft.

A diode pack comprises a plurality of diodes seated in an assembly within a housing. The diode pack also includes a plurality of radial studs extending from an axial end of the housing relative to an axis of rotation extending through the housing. Each of the radial studs is electrically connected to a respective diode within the assembly. The diode pack further includes a center stud captured within the housing between the assembly and the housing and along the axis of rotation. A method of making a diode pack includes forming a housing of an electrically insulate material, removing a portion of the housing along an axis of rotation of the housing, mounting a center stud in the housing where the portion was removed, and assembling an assembly of diodes into the housing.

A diode pack comprises a plurality of diodes seated in an assembly within a housing. The diode pack also includes a plurality of radial studs extending from an axial end of the housing relative to an axis of rotation extending through the housing. Each of the radial studs is electrically connected to a respective diode within the assembly. The diode pack further includes a center stud captured within the housing between the assembly and the housing and along the axis of rotation. A method of making a diode pack includes forming a housing of an electrically insulate material, removing a portion of the housing along an axis of rotation of the housing, mounting a center stud in the housing where the portion was removed, and assembling an assembly of diodes into the housing.

A main field connection to connect to a main field winding has a semi-cylindrical portion with an axially thicker outer surface, an axially thinner inner surface, with an aperture. An extending portion extends from the semi-cylindrical portion to a remote extending end. The remote extending end extends for a first axial distance. The axially thicker portion of the semi-cylindrical portion extends for a second axial distance. A ratio of the first axial distance to the second axial distance is between 0.65 and 1.4. A rotating assembly, a generator and a method are also disclosed.

A diode pack housing for a rotating rectifier assembly can include a body having an interior surface defining an interior cavity open on a first end and configured to contain a diode pack and a plurality of bus bar channels defined axially on or in the inner surface in the interior cavity. The plurality of bus bar channels can be five or less bus bar channels.