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Publications

Journal Papers

• Johnson, K. and Rex, A., "Methods for controlling a wind turbine system with a
  continuously variable transmission in region 2," accepted for publication in the
  Journal of Solar Energy Engineering.
• Johnson, K. and Fingersh, L., 2008, "Adaptive pitch control of variable-speed wind
  turbines," Journal of Solar Energy Engineering, Vol. 130, No. 3, pp. 031012-1 - 031012-7.
  Paper available here to JSEE subscribers.
• Johnson, K., Pao, L., Balas, M., and Fingersh, L., 2006, "Control of Variable Speed
  Wind Turbines: standard and adaptive techniques for maximizing energy capture,"
  IEEE Control Systems Magazine, Vol. 26, No. 3, pp. 70-81.
• Johnson, K., Fingersh, L., Balas, M., and Pao, L., 2004, "Methods for Increasing
  Region 2 Power Capture on a Variable Speed Wind Turbine," Journal of Solar
  Energy Engineering, Vol. 126, pp. 1092-1100.

Conference Papers

• Darrow, P.J., Wright, A., and Johnson, K., "Wind turbine control design to reduce
  capital costs," accepted for publication in the Proceedings of the AIAA/ASME Wind
  Energy Symposium, January 2009.
• Rex, A. and Johnson, K., 2008, "Model Development of a Wind Turbine System with
  a Continuously Variable Transmission for Design of Region 2 Speed Control,"
  Proceedings of the 2008 AIAA/ASME Wind Energy Symposium, (electronic).
• Johnson, K., and Fingersh, L., 2007, "Adaptive Pitch Control of Variable Speed
  Wind Turbines," Proceedings of the 26th ASME Wind Energy Symposium, Reno, NV.
  
• Johnson, K., Fingersh, L., Pao, L., and Balas, M., 2005, "Adaptive Torque Control
  of Variable Speed Wind Turbines for Increased Region 2 Energy Capture,"
  Proceedings of the 24th ASME Wind Energy Symposium, Reno, NV, pp. 66-76.
• Johnson, K., Pao, L., Balas, M., Kulkarni, V., and Fingersh, L., 2004, "Stability
  Analysis of an Adaptive Torque Controller for Variable Speed Wind Turbines,"
  Proceedings of the Conference on Decision and Control, Paradise Island,
  Bahamas, pp. 4087-4094. NREL preprint available here.
• Hand, M., Fingersh, L., Johnson, K., and Wright, A., 2004, "Advanced Control
  Design and Field Testing for Wind Turbines at the National Renewable Energy
  Laboratory," Proceedings of the World Renewable Energy Congress VIII, Denver,
  CO. NREL preprint available here.
• Johnson, K., Fingersh, L., Balas, M., and Pao, L., 2004, "Methods for Increasing
  Region 2 Power Capture on a Variable Speed HAWT," Proceedings of the 23rd ASME
  Wind Energy Symposium, Reno, NV, pp. 103-113. NREL preprint available here.
• Fingersh, L. and Johnson, K., 2004, "Baseline Results and Future Plans for the
  NREL Controls Advanced Research Turbine," Proceedings of the 23rd ASME Wind
  Energy Symposium, Reno, NV, pp. 87-93. NREL preprint available here.

Invited Publications

• Invited review of Wind Turbine Control Systems by Fernando D. Bianchi, Hernán
  De Battista, and Ricardo J. Mantz, IEEE Control Systems Magazine, Oct. 2007,
  pp. 124-126.

NREL Technical Reports

• Johnson, K., Fingersh, L., and Wright, A., 2005, Controls Advanced Research
  Turbine: Lessons Learned during Advanced Controls Testing, NREL Report No.
  TP-500-38130.
• Fingersh, L. and Johnson, K., 2002, Controls Advanced Research Turbine (CART)
  Commissioning and Baseline Data Collection, NREL Report No. TP-500-32879.