A method for repairing an electric generator having a rotor that rotates about a vertical axis, the rotor including a spider having a number of spider arms extending radially away from the axis, and a rim surrounding the spider. The weight of the rim is normally carried at least in part by rim support ledges of the spider arms. The method for repair includes supporting the rim from the top of the spider and thereby relieving some or all of the weight of the rim being supported by the rim support ledges

A method and system for handling a rotor and a stator of a rotary machine employs a frame and a carriage. The carriage rides on and is guided by a parallel pair of tracks that extend away from the frame. The frame and tracks both rest on a horizontal surface. The stator can be placed on the carriage and the frame can be used to provide support to the rotor. A force may be applied between the rotor and stator in a direction to move the carriage relative to the frame.

The present application relates to a rotor, an assembly method and a replacement method for integrated magnetic pole modules of rotor, and a generator. The rotor includes: a rotor yoke having a mounting surface and an outer peripheral surface which are opposite to each other in a radial direction; multiple beads, which are distributed and spaced apart on the mounting surface along a circumferential direction of the rotor yoke, in which a radial distance between each bead and the mounting surface is adjustable; multiple integrated magnetic pole modules, each of which is detachably connected between two adjacent beads, and includes a carrier plate and multiple permanent magnets arranged on the carrier plate; and multiple fixing members, in which each of the beads is mounted to the mounting surface by the fixing members, and each of the fixing members has an operation portion that can protrude from the outer peripheral surface.

A lamination for use in an integrated drive generator is formed from a plurality of plates having a body including a pair of opposed cylindrical surfaces. Non-cylindrical ditches are defined circumferentially intermediate the pair of cylindrical surfaces. A plurality of passages are formed in an outer periphery of the cylindrical surfaces including relatively large holes extending through a slot to the outer periphery. Grooves are formed intermediate the relatively large holes.

A method for repairing solder joint leakages on a connection unit designed to feed cooling water into hollow metallic stator bars of a stator winding of an electrical machine. A welding or soldering apparatus is designed for carrying out the method.

In a rotor of a rotating electric machine, a slot includes a winding insertion portion and a widened portion. A width dimension of the widened portion is larger than a width dimension of the winding insertion portion. A pair of step portions are formed on both sides of an end portion of the winding insertion portion on the widened portion side. A wedge member is spaced from and opposed to the pair of step portions. An insulation includes: an insulation main body arranged between a rotor winding and a damper bar; and an extended portion, which is arranged in at least a part of a space between the wedge member and the pair of step portions, and is configured to suppress movement of the damper bar in a circumferential direction of a rotor core.

In a method for correcting a portion, in particular a tooth, of a material layer of a dynamoelectric machine, with the material layer including a soft-magnetic material and having a layer thickness between 0.5 and 500 μm, an actual geometry of the portion of the material layer is ascertained and compared to a target geometry. A deviation of the actual geometry from the target geometry is determined. Before the deviation is corrected by partially plastically deforming the material layer using a light source, the material layer is partially heated by a further light source.

An electromagnetic machine includes a housing, an axle coupled to the housing in a rotatable fashion, a stator assembly disposed generally within the housing, the stator assembly including a stator plate and a stator bearing coupled to the axle such that the stator assembly is rotatable about the axle, a rotor assembly fixed to the axle and disposed generally within the housing and including a rotor housing that defines a circumferentially extending channel that is sized to receive a portion of the stator assembly therein; and a locking mechanism configured to selectively prevent and permit rotation of the stator assembly about the axle via the stator bearing. The housing can include an access window defined therein such that the stator assembly is accessible through the access window.

At least a part of a bridge portion of each electromagnetic steel sheet is modified, and electromagnetic steel sheets that have undergone the modification are stacked. This allows the bridge portions of a rotor core according to the present embodiment to have a lower magnetic permeability than that of other sites, and it is therefore possible to prevent some of the magnetic field lines from being short-circuited so as to draw a closed curve in the rotor core. Accordingly, a decrease in the efficiency of an interior permanent magnet (IPM) type rotating electric machine can be suppressed.

The present application relates to a rotor, an assembly method and a replacement method for integrated magnetic pole modules of rotor, and a generator. The rotor includes: a rotor yoke having a mounting surface and an outer peripheral surface which are opposite to each other in a radial direction; multiple beads, which are distributed and spaced apart on the mounting surface along a circumferential direction of the rotor yoke, in which a radial distance between each bead and the mounting surface is adjustable; multiple integrated magnetic pole modules, each of which is detachably connected between two adjacent beads, and includes a carrier plate and multiple permanent magnets arranged on the carrier plate; and multiple fixing members, in which each of the beads is mounted to the mounting surface by the fixing members, and each of the fixing members has an operation portion that can protrude from the outer peripheral surface.