Generator Users Group – Combined Cycle Journal

Generator Users Group

Nineteen 2023 meetings focusing on user information needs that you should consider attending

February 19–23, 501F Users Group Annual Meeting, Reno, Nev, Peppermill Resort & Spa. Details/registration at www.501fusers.org as they become available. Chairman: Ivan Kush, Cogentrix Energy Power Management. Contact: Jacki Bennis, jacki@somp.co. February 19-23, 501G Users Group Annual Meeting, Reno, Nev, Peppermill Resort & Spa. Meeting is co-located with the 501F Users Group conference. Details/registration at …

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Generators: A brief history

By Clyde V Maughan, Maughan Generator Consultants (retired) This historical perspective on turbine-driven generators, in four parts, is based on Clyde Maughan’s recollections from a 72-year career in turbine/generator design, manufacturing, and service—half that time with General Electric Co, the remainder as an independent consultant. Having joined GE in 1950, and having worked closely with …

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Generator History, Part 1: Electrical insulation systems

Stator windings Groundwall insulation. Before the turn into the 20th century, insulating materials were natural products: shellac, cotton, paper. The rudimentary stator-winding designs were at low voltage and low temperatures, and apparently functioned fairly well as long as duties were kept sufficiently low. With inevitable trends to larger generators, with higher voltages and higher thermal …

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Generator History, Part 3: Generator cooling methods

Originally, generators were cooled by once-through open air flow. Contamination problems led to closed ventilation systems, with water-to-air heat exchangers to remove the thermal losses—the TEWAC cooling system (Totally Enclosed Water-to-Air Cooling). This type of system is still very popular for small generators. But by the 1930s, ratings were reaching a size where the ability …

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Generators: Wrap-up

Clearly, this article, presented in the four sections bulleted below, provides a very general overview of generator history, with more left unsaid than said. No doubt there are errors of omission as well as commission. But hopefully the reader has gained a better appreciation for the efforts that went into the generator designs of today. …

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Generator Users Group: Video content assists owner/operators troubleshooting equipment issues

To understand the true value of a user group like the Generator Users Group, you must attend and participate in its collaborative, technical environment of generator experts. With the 2022 conference just one month away in San Antonio, the following intends to illustrate the unique content disseminated and absorbed by attendees. The 2021 conference of …

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Spring migration, collector changeout, flex-link systems

James Joyce, operations manager, MD&A’s Generator Repairs Div, speaking at the 2022 conference of the 7F Users Group, May 23-27, in the Fairmont Dallas Hotel, focused on three topics of particular importance to owner/operators of 7FH2 generators: Spring migration, collector changeout, and flex-link systems. All styles of 7FH2s—Gens One, Two, and Three, plus 324s—are affected …

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