IAS DISTINGUISHED LECTURE - III

#IAS #DISTINGUISHED #LECTURE #- #III
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The third IEEE IAS DISTINGUISHED LECTURE webinar scheduled on Saturday 21 November 2020. The event is organized and hosted by IAS Chapters and Membership Department (CMD) and Co-hosted by IEEE Region-1 Schenectady Section IAS Chapter, NY USA and IEEE Region-10 Vizag Bay Section PELS/IAS/PES Joint Chapter, INDIA. 


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  • Date: 28 Nov 2020
  • Time: 05:30 PM to 06:30 PM
  • All times are (UTC+05:30) Chennai
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  • Host: IAS CMD

    Co-host:

    Region-1 Schenectady Section IAS Chapter, New York, USA

    Region-10 Vizag Bay Section PELS/IAS/PES Joint Chapter, INDIA

    Sponsor: IAS CMD DL/PL Committee

  • Co-sponsored by IAS CMD

  Speakers

David Torrey David Torrey of GE Research

Topic:

Design of Superconducting Synchronous Machines for Low Speed Applications

Synchronous electric machines with superconducting field windings have been around for a long time but have not gone beyond prototypes and very limited demonstrations. However, magnetic resonance imaging (MRI) systems use superconducting magnets that are made in significant volumes each year and run with high reliability. This lecture provides a brief review of the technology advances that move superconducting machines toward commercialization and then discusses how one would go about designing a superconducting machine. Review of electric machine fundamentals will be provided to assist those new to the subject. The notional design of a  superconducting synchronous motor rated for 36.5MW of shaft power at 120rpm that would be compatible with a 6kV DC bus is presented as an illustrative example. Such a machine could serve as a propulsion motor for a large ship. The machine is based on low temperature superconducting field coils and an armature with reduced steel. The large magnetic fields produced by the field coils result in an air gap magnetic field greater than 2T. Mechanical considerations are also discussed, including the electromagnetic forces that are central
to understanding the signatures of the machine.

Biography:

David Torrey is a Senior Principal Engineer in the Electric Power organization at GE Global 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.

Email:

Address:Senior Principal Engineer , GE Research, Niskayuna, United States