Generator

MD&A 7FH2 Spring Migration Repair

Mechanical Dynamics & Analysis’ (MD&A) experts offer a unique, patented repair process that eliminates the axial migration of slot leaf springs within 7FH2 generator fields.  This repair can also be applied to 324 generator fields. The blockage of the radial ventilation passages results in reduced hydrogen gas cooling flow, which can lead to thermal instabilities […]

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Global Multiyear Major Outages

Mechanical Dynamics & Analysis (MD&A) recently performed multiyear outages for a customer on several different units in Colombia. First unit:  This was a major outage and generator test & inspection. In addition, this unit was retrofitted with a new rotor, bearings, and steam path components that required machining, including installing and fitting new nozzles. MD&A […]

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Generator Stator Rewind

MD&A has a long track record of successful generator stator rewinds on-site. Stator bar aging puts your generator at risk so let our experts with superior workmanship and responsiveness perform your next stator rewind. MD&A uses superior materials to complete the job. You can count on MD&A’s attention to quality! View the video to see […]

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Expert Repair of Generator High Voltage Bushings

High Voltage Bushings

Insulated devices known as bushings enable an electrical conductor to pass safely through a grounded conducting barrier. Generator bushings are designed to lead current induced in the stator windings through the pressurized, hydrogen-gas tight, earthed generator housing. A typical bushing consists of a conductor surrounded by insulation, except for the terminal ends. As part of […]

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Gas Turbine Major and Generator Test & Balance

Gas Turbine Major

Mechanical Dynamics and Analysis (MD&A) was contracted after a forced outage to perform a major overhaul on a cogeneration unit’s MS5001PA gas turbine, and to remove, test and inspect the generator field. Because the unit dispatches as baseload and the turbine is a critical asset, MD&A was asked to complete the repair work as quickly […]

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Happy 35th Anniversary!

Mechanical Dynamics & Analysis began in 1982 as a small engineering firm supporting power generation companies with third party consulting services.  It was founded by Jim Lindsey.  Since its inception, MD&A has maintained an entrepreneurial culture and has focused on outstanding customer service.  As a result, now in its 35th year, MD&A has evolved from […]

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High Speed Balance Article

High-Speed Balance Rotor

Hear from our high-speed balancing expert, Keith Collins, in this article in Power Magazine’s November issue. High-speed turbine rotor balancing was once rare because of the costs and logistical challenges involved in doing it during an outage. That’s begun to change as economic options emerge, and experience is showing that high-speed balancing can pay big […]

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Generator Rotor Stub Shaft Repair

Generator Rotor Stub Shaft Repair

Mechanical Dynamics and Analysis (MD&A) was retained by a utility to perform a stub-shaft repair of a generator rotor collector-end shaft. The customer reported that the generator rotor had suffered a collector ring failure and also a ground to the main shaft. Major arcing and heat damage occurred to the generator rotor forging shaft. The […]

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100th High-Speed Balance

High-Speed Balance Facility Experts

Mechanical Dynamics and Analysis is proud to announce its 100th rotor balance in our High-Speed Balance Facility. Our High-Speed Balance Facility became operational in 2013 and is one of the most modern balance facilities for power turbines in the world. MD&A’s facility was designed with both vacuum capability and the ability to excite generator rotors […]

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Mechanical Dynamics & Analysis LLC   |   19 British American Blvd., Latham, NY 12110   |   P (518) 399-3616   |   F (518) 399-3929