Abstract: A generator slot wedge is described. The slot wedge includes a surface and further includes a strain gage. The strain gage is attached to the surface of the slot wedge. A method of determining the strain on the generator slot wedge of the generator via the strain gage is also described.

Abstract: A generator air gap baffle train assembly includes linearly aligned baffle segments, linearly aligned wedge blocks, and a tensioning rod. Each baffle segment includes a radially outer portion having an outer surface to interface with the axial slot and a side surface angled with respect to the outer surface and an axially aligned first thru bore and a radially inner portion which projects into an air gap. A pair of wedge blocks are positioned on opposing sides of the radially outer portion, each wedge block including a side surface that interfaces with the side surface of the radially outer portion so that the interfacing surfaces are in abutting contact and an outer surface that interfaces with the axial slot and a second thru bore axially aligned with the first thru bore of each baffle segment. The tensioning rod is enclosed by a non-conducting hollow tube spanning between adjacent baffle segments.

Abstract: A generator stator end winding coil support assembly is presented. The assembly includes a bracket rigidly secured to a core flange plate and a brace clamped between a backup plate and the bracket by studs. The brace connects to an inner support ring. An elastic layer is disposed around the brace. Sleeves are disposed in apertures of the brace and enclose the studs. The sleeves set up a gap at interfaces between the brace and the bracket and between the brace and the backup plate that defines a compression of the elastic layer. The compression enables the brace to be movable relative to the bracket rigidly secured to the core flange plate for flexibly supporting the end winding coils. Flexibility and stiffness of the support is controllable by adjusting clamping force of the studs and selection of the elastic layer based on load conditions during operation.

Abstract: A generator slot wedge is described. The slot wedge includes a surface and further includes a strain gage. The strain gage is attached to the surface of the slot wedge. A method of determining the strain on the generator slot wedge of the generator via the strain gage is also described.

Abstract: A generator air gap baffle train assembly includes linearly aligned baffle segments, linearly aligned wedge blocks, and a tensioning rod. Each baffle segment includes a radially outer portion having an outer surface to interface with the axial slot and a side surface angled with respect to the outer surface and an axially aligned first thru bore and a radially inner portion which projects into an air gap. A pair of wedge blocks are positioned on opposing sides of the radially outer portion, each wedge block including a side surface that interfaces with the side surface of the radially outer portion so that the interfacing surfaces are in abutting contact and an outer surface that interfaces with the axial slot and a second thru bore axially aligned with the first thru bore of each baffle segment. The tensioning rod is enclosed by a non-conducting hollow tube spanning between adjacent baffle segments.

Abstract: A generator stator end winding coil support assembly is presented. The assembly includes a bracket rigidly secured to a core flange plate and a brace clamped between a backup plate and the bracket by studs. The brace connects to an inner support ring. An elastic layer is disposed around the brace. Sleeves are disposed in apertures of the brace and enclose the studs. The sleeves set up a gap at interfaces between the brace and the bracket and between the brace and the backup plate that defines a compression of the elastic layer. The compression enables the brace to be movable relative to the bracket rigidly secured to the core flange plate for flexibly supporting the end winding coils. Flexibility and stiffness of the support is controllable by adjusting clamping force of the studs and selection of the elastic layer based on load conditions during operation.

Abstract: An assembly and a method for supporting generator stator end winding coils are presented. The assembly includes an outer support circumferentially disposed on outer side of bottom end winding coils and inner braces disposed on inner side of top end winding coils and circumferentially spaced apart from each other. At least one inner brace is disposed along an axial direction of the top end winding coils. Studs are radially oriented and threaded into the inner braces from the outer support. The studs are tensioned and retightenable to a required clamping force for supporting the end winding coils. Filler layers are disposed between the top end wind coils and bottom end wind coils for supporting the clamping force.

Abstract: A baffle train for turbine generator air baffles independently aligns axial position of the composite air baffle along a stator core bore axial slot. Air baffle sectors that form the composite air baffle are coupled to baffle blocks of the baffle train. The baffle blocks are positioned axially along at least one axial spacer rod corresponding to the desired position of the composite air baffle within the stator bore. The baffle blocks are locked into position by a locking engagement member. Wedge blocks are axially spaced on a reciprocating wedge block rod within the stator slot below the baffle blocks. A biasing element, such as arched leaf spring, tensions the baffle block radially inwardly toward the stator bore when the wedge blocks are reciprocated below the baffle blocks.

Abstract: An assembly and a method for supporting generator stator end winding coils are presented. The assembly includes an outer support circumferentially disposed on outer side of bottom end winding coils and inner braces disposed on inner side of top end winding coils and circumferentially spaced apart from each other. At least one inner brace is disposed along an axial direction of the top end winding coils. Studs are radially oriented and threaded into the inner braces from the outer support. The studs are tensioned and retightenable to a required clamping force for supporting the end winding coils. Filler layers are disposed between the top end wind coils and bottom end wind coils for supporting the clamping force.

Abstract: A baffle train for turbine generator air baffles independently aligns axial position of the composite air baffle along a stator core bore axial slot. Air baffle sectors that form the composite air baffle are coupled to baffle blocks of the baffle train. The baffle blocks are positioned axially along at least one axial spacer rod corresponding to the desired position of the composite air baffle within the stator bore. The baffle blocks are locked into position by a locking engagement member. Wedge blocks are axially spaced on a reciprocating wedge block rod within the stator slot below the baffle blocks. A biasing element, such as arched leaf spring, tensions the baffle block radially inwardly toward the stator bore when the wedge blocks are reciprocated below the baffle blocks.

Abstract: A flux probe (100) for measuring the rotor flux of an electric generator (10). The probe (100) is affixed to a probe carrier (102) and held within a stator coil slot (62) by affixing the carrier (102) to two opposing grooves (104) formed in sidewalls (81) of the slot (62). One or more stator coils (18) are also disposed in the slot (62) and retained therein by a wedge (74) and corresponding spring (72) that applies an radially outwardly directed force to the coils (18). In one embodiment the probe carrier (102) is affixed to a radially inwardly directed face (82) of the wedge (74).