Improved damper cage design for salient-pole synchronous generators
| Autor: | Chris Gerada, Michael Galea, Michele Degano, Neil Brown, Stefano Nuzzo, David Gerada |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Engineering
Asymmetric rotor winding damper cage design harmonic analysis iron losses calculation principal inductance salient-pole synchronous generator Topology (electrical circuits) 02 engineering and technology Permanent magnet synchronous generator 01 natural sciences Damper Harmonic analysis Control theory 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering 010302 applied physics Total harmonic distortion business.industry 020208 electrical & electronic engineering Control engineering Shock absorber Control and Systems Engineering Electromagnetic coil Transient (oscillation) business shock absorbers salient-pole synchronous generator asymmetric rotor winding damper cage design harmonic analysis iron losses calculation |
| ISSN: | 0278-0046 1557-9948 |
| Popis: | © 2016 IEEE. The benefits of implementing a damper winding in salient-pole synchronous generators are widely known and well consolidated. It is also well known that such a winding incurs extra losses in the machine due to a number of reasons. In order to improve the overall efficiency and performance of classical salient-pole, wound field synchronous generators that employ the traditional damper cage, an improved amortisseur winding topology that reduces the inherent loss is proposed and investigated in this paper. This is essential in order to meet modern power quality requirements and to improve the overall performance of such "classical" machines. The new topology addresses the requirements for lower loss components without compromising the acceptable values of the output voltage total harmonic distortion and achieves this by having a modulated damper bar pitch. As vessel for studying the proposed concept, a 4-MVA salient-pole synchronous generator is considered. A finite element model of this machine is first built and then validated against experimental results. The validated model is then used to investigate the proposed concept with an optimal solution being achieved via the implementation of a genetic algorithm optimization tool. Finally, the performance of the optimized machine is compared to the original design both at a steady state and transient operating conditions. |
| Databáze: | OpenAIRE |
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