Abstract: A retention assembly for retaining a plurality of elements in a stator slot of an electric machine is provided. The retention assembly may include a stator wedge fixedly positioned in a dovetail in the stator slot to retain the plurality of elements; a top ripple spring between the plurality of elements and the stator wedge; and at least one shim positioned between the stator wedge and a load bearing surface of the dovetail. A method may include compressing the stator wedge in the stator slot from a first position thereof relative to the dovetail of the stator slot, the compressing creating a gap between the stator wedge and the dovetail. A shim may be inserted in the gap; the compressing released such that the shim retains the stator wedge in a second position that is more compressed relative to the plurality of elements in the stator slot compared to the first position.

Abstract: An electrically insulating composition comprising about 25 to about 55 percent by weight of filler materials, about 45 to about 75 percent by weight of resin. The percentages being selected such that the total percentage of components does not exceed 100 percent. The composition has a thermal conductivity of about 0.2 to about 1.3 W/m-K when measured at 130° C.

Abstract: An electrically insulating composition comprising about 25 to about 55 percent by weight of filler materials, about 45 to about 75 percent by weight of resin. The percentages being selected such that the total percentage of components does not exceed 100 percent. The composition has a thermal conductivity of about 0.2 to about 1.3 W/m-K when measured at 130° C.

Abstract: A retention assembly for retaining a plurality of elements in a stator slot of an electric machine is provided. The retention assembly may include a stator wedge fixedly positioned in a dovetail in the stator slot to retain the plurality of elements; a top ripple spring between the plurality of elements and the stator wedge; and at least one shim positioned between the stator wedge and a load bearing surface of the dovetail. A method may include compressing the stator wedge in the stator slot from a first position thereof relative to the dovetail of the stator slot, the compressing creating a gap between the stator wedge and the dovetail. A shim may be inserted in the gap; the compressing released such that the shim retains the stator wedge in a second position that is more compressed relative to the plurality of elements in the stator slot compared to the first position.

Abstract: Embodiments of the disclosure can include a method for reducing or repairing vibration-caused damage in a stator bar, and a dynamoelectric machine resulting therefrom. The method for reducing vibration-caused damage in a stator can include applying, from within a ventilation slot of a stator core, a liquid based vibration-absorbing material onto a side ripple spring, the side ripple spring being in contact with a stator bar and the stator core; and allowing the liquid based vibration-absorbing material to cure, wherein the cured vibration-absorbing material remains in contact with the side ripple spring for absorbing stator vibrations.

Abstract: Embodiments of the disclosure can include a method for reducing or repairing vibration-caused damage in a stator bar, and a dynamoelectric machine resulting therefrom. The method for reducing vibration-caused damage in a stator can include applying, from within a ventilation slot of a stator core, a liquid based vibration-absorbing material onto a side ripple spring, the side ripple spring being in contact with a stator bar and the stator core; and allowing the liquid based vibration-absorbing material to cure, wherein the cured vibration-absorbing material remains in contact with the side ripple spring for absorbing stator vibrations.