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No-load core loss prediction of PM generator at low electrical frequency

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  • Bülow, Fredrik
  • Eriksson, Sandra
  • Bernhoff, Hans

Abstract

A method for measurement of frequency dependent electromagnetic core loss of a permanent magnet generator is presented. Core loss of a PM generator is measured at electrical frequencies ranging from 4 to 14 Hz. Core loss in the same interval is simulated using the finite element method and frequency domain loss separation. The specific loss is both extrapolated from specific loss at 50 Hz and measured directly at 4, 8, 12 and 16 Hz. Core loss simulations based on extrapolated specific loss are 38–53% smaller than measured loss. Core loss simulations based on specific loss measured at 4, 8, 12 and 16 Hz are 19–23% smaller than measured loss.

Suggested Citation

  • Bülow, Fredrik & Eriksson, Sandra & Bernhoff, Hans, 2012. "No-load core loss prediction of PM generator at low electrical frequency," Renewable Energy, Elsevier, vol. 43(C), pages 389-392.
    • Handle: RePEc:eee:renene:v:43:y:2012:i:c:p:389-392
    DOI: 10.1016/j.renene.2011.12.002
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    1. Eriksson, Sandra & Solum, Andreas & Leijon, Mats & Bernhoff, Hans, 2008. "Simulations and experiments on a 12kW direct driven PM synchronous generator for wind power," Renewable Energy, Elsevier, vol. 33(4), pages 674-681.
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    1. Sandra Eriksson, 2019. "Design of Permanent-Magnet Linear Generators with Constant-Torque-Angle Control for Wave Power," Energies, MDPI, vol. 12(7), pages 1-19, April.
    2. Senad Apelfröjd & Sandra Eriksson & Hans Bernhoff, 2016. "A Review of Research on Large Scale Modern Vertical Axis Wind Turbines at Uppsala University," Energies, MDPI, vol. 9(7), pages 1-16, July.
    3. Morgan Rossander & Anders Goude & Sandra Eriksson, 2017. "Critical Speed Control for a Fixed Blade Variable Speed Wind Turbine," Energies, MDPI, vol. 10(11), pages 1-21, October.

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