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Träfflista för sökning "WFRF:(Nilsson Mats) ;pers:(Leijon Mats)"

Sökning: WFRF:(Nilsson Mats) > Leijon Mats

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  • Leijon, Mats, et al. (författare)
  • Direct electric energy conversion system for energy conversion from marine currents
  • 2007
  • Ingår i: Proceedings of the Institution of mechanical engineers. Part A, journal of power and energy. - 0957-6509 .- 2041-2967. ; 221:2, s. 201-205
  • Tidskriftsartikel (refereegranskat)abstract
    • Direct electric energy conversion without input power regulating system or gearboxes may offer a simpler and thus low cost way of converting the energy of moving water. The proposed electrical system consists of a permanent magnetized direct drive generator, a rectification step, transmission, an inverter, a transformer, and a grid connection. This paper focuses on the generator, and simulations of a 5 kW permanent magnetized direct drive generator have been performed. Operation of the generator at both part load and overloads are calculated and presented. It is found that this direct drive permanent magnetized generator provides a relatively high efficiency for both part load and overload conditions.
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  • Nilsson, Karin, et al. (författare)
  • A direct drive generator for marine current energy conversion - first experimental results
  • 2007
  • Konferensbidrag (refereegranskat)abstract
    • Marine currents can be an effective source for renewable electric energy conversion. In this paper a direct drive permanent magnet synchronous generator capable of being connected to a vertical axis turbine for marine current energy conversion is presented. This 5 kVA, 120 pole, 10 rpm prototype generator was initially designed for ocean current speeds of 1.5 m/s using a finite element based electrical machine design software. Unlike most conventional generators this machine has a cable wound stator. To evaluate the electrical and mechanical performance characteristics of this machine, laboratory experiments are being carried out using a speedcontrolled motor drive system and resistive three phase loads. First measurements of voltage and current show good agreement between the modelled and built generator.
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