Superconducting Generators for Offshore Wind Turbines



Wind turbines represent the second largest source of renewable power (though solar is gaining).  Wind energy started with land-based turbines.  In recent years offshore wind turbines are being deployed to capture the steady offshore winds and relieved siting constraints.

This lecture starts with a discussion of energy accounting for wind turbines by considering the levelized cost of energy (LCOE).  The drivetrains of onshore and offshore are then motivated by considering the dominant factors in LCOE.  The lecture then discusses the permanent magnet generators (PMGs) currently used to support offshore wind turbine drivetrains before transitioning to a discussion of why superconducting generators could be valuable in offshore wind turbines.  The converters through which the generator power is processed to the grid are discussed, including a discussion of space vector modulation for multi-level converters.  The lecture concludes with a discussion of how the generator is controlled through the converter.

  Date and Time




  • Date: 30 Nov 2022
  • Time: 01:00 PM to 02:30 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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Virtual Participating Link:


Meeting ID: 925 1136 2273

Passcode: 396518

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  • Stony Brook University
  • Stony Brook, New York
  • United States 11794-2350
  • Building: Light Engineering Building
  • Room Number: 250
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  • Starts 29 November 2022 11:00 AM
  • Ends 30 November 2022 01:00 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
  • No Admission Charge


David Torrey David Torrey


David Torrey is a Senior Principal Engineer in the Electrical Systems organization at GE Research.  His research interests are in the design and control of electric machines, particularly within the context of integrated energy conversion systems.  His application experience ranges from machine design for subsea hydrocarbon pumping, electric submersible pumps, to design of next-generation generators for offshore wind turbines, to design of engine-embedded generators to support hybrid electric aircraft.  He holds several awarded and pending patents in the electric machine, power electronics, and control fields related to applications in transportation, renewable energy, oil and gas, and micro-grids.  He has authored over 40 journal papers, over 70 conference papers, 3 book chapters, and one textbook in these areas.  He supervised 13 doctoral theses while on the faculty at Rensselaer Polytechnic Institute.  He is a fellow of IEEE and IET.