Abstract: Generator rotor comprising a rotor rim and a plurality of permanent magnet modules arranged at one of an inner and outer circumference of said rotor rim, wherein the rotor rim comprises a plurality of rotor rings separated by gaps between them, and attached to each other via a plurality of axial strips fixed to the other of the inner and outer, the permanent magnet modules comprise a base and one or more rows of magnets mounted on a top surface of said base, and wherein the permanent magnet modules are fixed to the strips by a plurality of fasteners extending through the gaps between the rotor rings.

Abstract: There are provided a motor and a disk driving device equipped with the motor. The motor may include a core on which a coil is wound, a rotor having a magnet generating an electromagnetic force through an interaction with the coil, and rotating a shaft, a sleeve housing including an inner diameter part to which a sleeve supporting the shaft is press-fitted, a core seating part extended outside in an outer diameter direction from the inner diameter part, and an outer diameter part extended to an axial lower side of the sleeve from the core seating part, and a base plate including a strength reinforcement part formed therein, the strength reinforcement part being brought into contact with the outer diameter part and at least one part of an inner surface of the core seating part.

Abstract: The invention relates to a generator stator configuration, comprising a stiffened stator core having a multitude of stator plates, which have stator teeth on the radial inner periphery of the stator core, each stator plate having a material bond to an adjacent stator plate and/or to a stiffening element on the radial outer periphery on at least one connection point; and a spring-elastic support structure to implement an elastic foundation connection for the stiffened stator core.

Abstract: A rotating electrical machine is provided in which, even when torque from a water turbine is reduced and reverse torque is applied due to load cut off, a rotor core is not eccentric to spider arms. The rotor of a rotating machine includes a vertical rotating shaft, spider arms extending radially from the vertical rotating shaft, and a rotor core component provided to the outer circumference of the spider arms. A T key and cotters are inserted into and secured to a key way provided to an abutment surface of the inner circumference of the rotor core component and the top end of the spider arm. A plate spring is mounted to a surface of the spider arm, the surface facing a rotational direction for electrical generation. The plate spring has one side engaging the spider arm, the other side engaging the rotor core component, and a middle portion bolted from an opposite surface of the spider arm.

Abstract: A rotating electric machine includes: a stator and a rotor, wherein the rotor includes a rotor core in which rotor plates punched from roll formed magnetic steel plate are laminated, and a spider that retains the rotor core; the rotor plates and the rotor core include a plurality of keys arranged in their inner circumference contacting with the spider; the spider includes a plurality of keyways arranged in its outer circumference contacting with the rotor; a plurality of keys of the rotor core and a plurality of keyways of the spider are formed in such a manner that they fit with each other; and the plurality of keys of the rotor core and the plurality of keyways of the spider fit in a combination that renders a weight imbalance of the rotor core due to lamination of the rotor plates and a weight imbalance of the spider cancel each other.

Abstract: In one embodiment, a system includes a stator mounting kit that includes multiple radial adjustment shims having different thicknesses from one another. The stator mounting kit also includes multiple stator alignment adapters having different circumferential alignments between a keybar mount and a spring bar mount. The stator mounting kit is configured to enable radial and circumferential alignment between each spring bar and respective keybar in a stator framework via selection of one of the stator alignment adapters and selection of one or more of the radial adjustment shims.

Abstract: A rotating electrical machine is provided in which, even when torque from a water turbine is reduced and reverse torque is applied due to load cut off, a rotor core is not eccentric to spider arms. The rotor of a rotating machine includes a vertical rotating shaft, spider arms extending radially from the vertical rotating shaft, and a rotor core component provided to the outer circumference of the spider arms. A T key and cotters are inserted into and secured to a key way provided to an abutment surface of the inner circumference of the rotor core component and the top end of the spider arm. A plate spring is mounted to a surface of the spider arm, the surface facing a rotational direction for electrical generation. The plate spring has one side engaging the spider arm, the other side engaging the rotor core component, and a middle portion bolted from an opposite surface of the spider arm.

Abstract: Systems, methods, and apparatus for controlling key bar movement in a stator assembly are provided. According to one embodiment, a stator assembly is provided that includes multiple core ring compression bands longitudinally spaced apart and disposed around a stator core having a plurality of key bars radially spaced apart and extending longitudinally along a peripheral edge of the stator core. Each of the core ring compression bands can be formed from multiple semi-circular sections coupled to form the respective core ring compression band. Each of the key bars can be disposed within respective cutouts defined in an inner edge of the core ring compression bands.

Abstract: A rotating electric machine includes: a stator and a rotor, wherein the rotor includes a rotor core in which rotor plates punched from roll formed magnetic steel plate are laminated, and a spider that retains the rotor core; the rotor plates and the rotor core include a plurality of keys arranged in their inner circumference contacting with the spider; the spider includes a plurality of keyways arranged in its outer circumference contacting with the rotor; a plurality of keys of the rotor core and a plurality of keyways of the spider are formed in such a manner that they fit with each other; and the plurality of keys of the rotor core and the plurality of keyways of the spider fit in a combination that renders a weight imbalance of the rotor core due to lamination of the rotor plates and a weight imbalance of the spider cancel each other.