An electric generator phase ring handling tool, a phase ring loading tool, base loader, and a system and a method for servicing or installing one or more phase rings in an electric generator using the handling tool, the loading tool and the base loader. Phase rings can be picked up and transported to a generator, inserted into the generator, adjusted while inside the generator, and removed. Installation, removal and servicing of the rings in a generator avoids use of a crane and allows shorten generator outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator.

An electric generator phase ring handling tool, a phase ring loading tool, base loader, and a system and a method for servicing or installing one or more phase rings in an electric generator using the handling tool, the loading tool and the base loader. Phase rings can be picked up and transported to a generator, inserted into the generator, adjusted while inside the generator, and removed. Installation, removal and servicing of the rings in a generator avoids use of a crane and allows shorten generator outage duration. Without using a crane for installation, removal and servicing, the safety of workers performing these operations is enhanced. Also, increased precision in transporting, placing, installing, removing, and adjusting the rings is obtained, minimizing the risk of damage to the rings and the generator.

Systems and methods are provided to refurbish a commutator in-place without disassembly of a motor generator. The disclosed system may include a drive/brake system for controlling the rotation of the commutator during the refurbishment process, and a multi-axis Computer Numerical Control (CNC) motion and machining platform for controlling processing and refurbishment devices that traverse the commutator surface. Such devices may include an undercutting device to remove dielectric material from between commutator bars, a stoning device to obtain a polished surface finish for the commutator, and a chamfering device to remove burrs at the edges of the commutator grooves left by the stoning process. Alignment and inspection devices may be utilized along with mobile panels and cameras. The subsystems and components of the disclosed system may comprise a modular implementation designed for transportation and assembly in space-constrained environments.

Systems and methods are provided to refurbish a commutator in-place without disassembly of a motor generator. The disclosed system may include a drive/brake system for controlling the rotation of the commutator during the refurbishment process, and a multi-axis Computer Numerical Control (CNC) motion and machining platform for controlling processing and refurbishment devices that traverse the commutator surface. Such devices may include an undercutting device to remove dielectric material from between commutator bars, a stoning device to obtain a polished surface finish for the commutator, and a chamfering device to remove burrs at the edges of the commutator grooves left by the stoning process. Alignment and inspection devices may be utilized along with mobile panels and cameras. The subsystems and components of the disclosed system may comprise a modular implementation designed for transportation and assembly in space-constrained environments.

A repair method of a stator iron core which has a slot for accommodating a stator coil, and is formed by laminating silicon steel sheets. The method is implemented by moving a part of the silicon steel sheets which form the stator iron core while holding the stator coil in the slot to form a gap between the laminated silicon steel sheets of the stator iron core in the existence of a damaged part, and adding an insulation to the damaged part of the silicon steel sheet from the gap formed between the laminated silicon steel sheets to repair the damaged part of the silicon steel sheet.

A repair method of a stator iron core which has a slot for accommodating a stator coil, and is formed by laminating silicon steel sheets. The method is implemented by moving a part of the silicon steel sheets which form the stator iron core while holding the stator coil in the slot to form a gap between the laminated silicon steel sheets of the stator iron core in the existence of a damaged part, and adding an insulation to the damaged part of the silicon steel sheet from the gap formed between the laminated silicon steel sheets to repair the damaged part of the silicon steel sheet.

Stators for use in electric machines and methods for refurbishing the same. One method for refurbishing a stator for use in an electric machine includes at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, and reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil.

Stators for use in electric machines and methods for refurbishing the same. One method for refurbishing a stator for use in an electric machine includes at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, and reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil.

Stators for use in electric machines and methods for refurbishing the same. One method for refurbishing a stator for use in an electric machine includes at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, and reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil.

Stators for use in electric machines and methods for refurbishing the same. One method for refurbishing a stator for use in an electric machine includes at least partially disassembling the stator to provide access to a plurality of stator windings connected in a four-circuit star connection having three turns per coil, and reconfiguring the stator such that the plurality of stator windings are connected in a four-circuit delta connection having five turns per coil.