Siemens Westinghouse Power Corporation

Siemens Energy, Inc.

Siemens Power Generation, Inc.

Larry L Zeller

Randy Edward Whitener

Jiping Zhang

Peter Jon Clayton

Kevin Michael Light

Raul Ricardo Rico

William Cannon Gardner

Stephen Thomas Soto

David Earl Hulsey

Keith B McLaurin

Robert R Messel

Rene Echevarria

Robert F Lemke

James V Johnson

Robert W Ralph

Christian T Schneider

Ronald P Enos

Henk vanRavenswaay

Mark A Grobe

Craig Michael Spencer

A winding for a rotor for use in an electrical generator utilized in the power generation industry. The winding includes a plurality of axial sections and a plurality of transversely oriented end arc sections. An integrated leg section extends from each end arc section to form an associated corner section at an intersection of each leg section and associated end arc section. Each leg section is affixed to an associated axial section at a joint that is spaced apart from an associated corner section such that the joint is not subjected to stress concentration which occurs at the associated corner section.

Rotor winding having a braze joint spaced apart from stress concentration

The present invention provides for a method of installing a guidevaneto an end platethat comprises manufacturing a guidevane with at least one tablocated on a top length-wise edge of the guidevane and multiple tab slotslocated on the length-wise edge. Then attaching the guidevaneto an end face of an end plate via a fastener that attaches the at least one tab to the end face, and aligning the plurality of tab slots to multiple end plate tabs so that the tab and the tab slots are approximately aligned with the end face of the end plate

Inlet guidevanes for generator rotors

An interconnecting assembly for a rotor assembly of a dynamoelectric machine is provided. The interconnecting assembly may be part of a conductive path generally extending from a radially inward section of the rotor assembly to a winding located at a radially outward section of the rotor assembly. The interconnecting assembly may be made up of a flexible member () comprising a bend (). The interconnecting assembly may be further made up of a connector () connected to the flexible member to pass axial and radial forces that develop during operation of the machine. The positioning of the connector relative to the flexible member may be arranged so that an effect of an axial force on a radius of curvature of the bend and an effect of a radial force on that radius of curvature are opposed to one another. This leads to lower peaks of mechanical stress at the flexible member () (e.g., J-strap), which in turn leads to a relatively more durable and reliable conductive path for the rotor assembly of the dynamoelectric machine.

Generator rotor lead path for connecting to a field winding

A joined assembly and kit for a rotor of a dynamoelectric machine are provided. The joined assembly is part of a conductive path generally extending from a radially inward section of the rotor to a radially outward section of the rotor. The conductive path includes a flexible connecting member from the radially inward section of the rotor to the joined assembly. The joined assembly includes a stacked winding energizable in response to excitation current carried by the conductive path to a top of the stacked winding located at the radially outward section of the rotor. The joined assembly further includes a connector with a first leg providing an electrically insulated mechanical point of contact relative to a bottom of the stacked winding. A second leg is electromechanically connected to the top of the stacked winding, and a third leg provides an electrically conductive path between the first and the second legs, wherein the stacked winding is captured by the connector to constitute such joined assembly, which is jointly movable in response to axial and/or radial forces that may develop during operation of the dynamoelectric machine.

Generator rotor conductive path for connecting to a top-turn of a winding

The present invention increases the life of a pole crossover while minimizing the need for timely inspections and costly replacements. The present invention splits the pole crossover bandat one or more locations along its circumference and then joins the multiple arcs with a flexible member, such as an omega shaped bow. As deflection related stressesincrease, the circumference of the pole crossover band, the flexible memberallows for a natural expansion point in the otherwise rigid material. This relieves stresses that would otherwise be transferred to the connection pointbetween the pole crossover and the generator windings that can cause cracking and eventually generator failure.

Generator rotor pole crossover

An axial zone block ( ) and methods of using the same are provided. The axial zone block ( ) preferably is adapted to be positioned to overlie a rotor shaft ( ) of a generator rotor ( ) and to underlie portions of a plurality of end windings ( ) and portions of at least one coil pole cross-over connector ( ) of the generator rotor ( ) to assist in forming low pressure axial zones in the rotor ( ). The axial zone block ( ) preferably includes a separate upper block portion ( ) adapted to be positioned to underlie and abuttingly contact portions of the at least one coil pole cross-over connector ( ) and portions of the plurality of end windings ( ), a separate lower inboard block portion ( ) adapted to be positioned to underlie and abuttingly contact an inboard end of the upper block portion ( ), and a separate lower outboard block portion ( ) adapted to be positioned to underlie and abuttingly contact an outboard end of the upper block portion ( ) and to be positioned adjacent and abuttingly contact an outboard end of the lower inboard block portion ( ).

Generator rotor having axial zone blocks and associated methods

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Orlando, FL, United States of America

Larry L Zeller