Constrained ripple spring assembly and methods of installation

Details Constrained ripple spring assembly and methods of installation Constrained ripple spring assembly and methods of installation

H - Electricity

02

K

H02K 3/48 (2006.01)

Patent

CA 2103422

CONSTRAINED RIPPLE SPRING ASSEMBLY AND METHODS OF INSTALLATION ABSTRACT A constrained ripple spring assembly 26 is disposed in the slots 12 of a rotor 10 forming part of a dynamoelectric machine and between the stator windings 14 and the wedges 20 maintaining the windings in the slots. The ripple springs 28 are adhesively secured to flat surfaces, for example, the underside of the wedges or one or two filler strips 30, 32, such that the spring assemblies are substantially flat upon insertion. At a predetermined elevated temperature, the adhesive bond is broken, enabling the spring to expand into a natural corrugated shape to apply a loading against the wedges and winding.

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