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Balancing on site: construction of tools for mounting balancing weight inside the airgap of a generator
2007 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

ALSTOM Power in Västerås, Sweden have for some time investigated the possibility to balance a generator rotor on site after rewinding. After extensive testing and investigations it was found that it would be theoretical possible. One of the problems left to solve was how to mount the balancing weight on to the rotor inside the air gap of the generator. This has to be solved before the overhead goal of balancing on site is going to be possible. This thesis work is a continuation of the results that emerge during the course “creative product development” at Luleå Technical University 2004-2005 when a project group received the same question at issue to investigate. The work started with analysing the work and result this group came up with. Based on that we analysed if some of the these ideas is possible to develop or to be improved. The goal with the work is to manufacture a prototype that works and be implemented in ALSTOM as a service to offer to the customers. All solutions have been discussed together with the R&D department at ALSTOM to avoid the biggest errors that can occur merging different technical areas. This has also given us an insight how ALSTOM earlier has thought about some to the problems that we have been facing during the work. The work have followed the product development process designed by Karl T. Ulrich and Steven D. Eppinger in the book “Product Design and Development”. After the first investigating steps we started to work in a 3D-envieroment with the software IDEAS. Before the prototype was sent to production a number of simulations in 3D-space was performed to ensure that the physical dimensions would not be a problem. Finally the production was outsourced to an external company specialized on making prototype models. With the final product produced a number of tests have been carried out to verify our simulations and assumptions. These tests have given the results that ALSTOM was looking for and probably during 2007 ALSTOM will start selling the service balancing on site.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Generators, Balancing, Work on Situ, Small hydraulics
Keyword [sv]
URN: urn:nbn:se:ltu:diva-55033ISRN: LTU-EX--07/045--SELocal ID: bf1aca7f-e263-4dfa-bc72-b03a2b3ac60dOAI: diva2:1028414
Subject / course
Student thesis, at least 30 credits
Educational program
Mechanical Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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