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Discussion Of The Grainger Center For Electric Machinery And Electromechanics Collaborative Network
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Discussion Of The Grainger Center For Electric Machinery And Electromechanics Collaborative Network






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    Discussion Of The Grainger Center For Electric Machinery And Electromechanics Collaborative Network Discussion Of The Grainger Center For Electric Machinery And Electromechanics Collaborative Network Presentation Transcript

    • Discussion of the Grainger Center for Electric Machinery and Electromechanics Collaborative Network: an Overview of Machines and Energy on a National Scale P. Krein, P. Chapman Grainger Center for Electric Machinery and Electromechanics Dept. of Electrical and Computer Engineering University of Illinois at Urbana-Champaign
    • Introduction
      • CEME Collaborative Network (in order of visits)
        • Purdue University
        • University of California at Berkeley
        • Georgia Institute of Technology
        • University of Wisconsin – Madison
        • The Ohio State University
        • Oregon State University
      • Highlights of one or two activities at each school
      • Time for discussion of directions and needs
    • Purdue University
      • Electromechanical and systems requirements for more-electric naval vessels.
        • Transform the fleet , not just a ship.
        • System requirements and vulnerabilities have changed: in the last several major naval incidents, physical damage was limited but system failure was complete.
        • Must be able to function through first-level damage.
    • Purdue University
      • Genetic-algorithm-based system-level optimization.
        • Examples include optimization based on mission requirements.
        • Optimize operation subject to rational damage scenarios.
      • Ultra-fast simulation
        • Applying approaches that perform time simulation faster than real time.
    • University of California at Berkeley
      • Direct electromechanical generation from engines
        • Integrated generator methods for Stirling engine.
        • The figure of merit for energy conversion is really cost per output joule. Efficiency is less germane.
      • Microengines
        • Rotary engine at millimeter scale with integrated generator.
        • Favorable possibilities relative to batteries and small fuel cells.
      • Robot microactuators
    • University of California at Berkeley
      • Interests in PWM modulation processes and noise management.
      • Much interaction with industry in areas of analog integrated circuits and integrated power.
    • Georgia Institute of Technology
      • Program size on a par with Illinois (Ga Tech and Illinois are the largest ECE programs).
      • Hosts NEETRAC, a power test facility transferred from Georgia Power.
      • Interaction with mechanical engineering.
      • New faculty member in analog and power integrated circuits.
    • Georgia Institute of Technology
      • Online diagnostics for machines
        • Interpret current waveforms for various problems.
        • Applications include internal failures, bearing condition monitoring, imbalance detection.
        • Certain classes of problems are hard to distinguish. Various combinations of forward-sequence, backward-sequence, and d-q transformation concepts can help.
      • In smaller machines, bearing failures are the most common failure mechanism.
    • Georgia Institute of Technology
      • Machine design is actively taught.
      • One example: small generator to optimize power extraction from a reciprocating source.
      • Do the extraction directly rather than with (lossy) mechanical linkages for continuous motion.
      • Global energy challenges: in many areas, 100 W-hr/day would make a substantial impact on living conditions.
    • University of Wisconsin
      • Strong industry support and industry programs.
      • “Self-sensing” drive technologies in which sensors are integrated with machines or with drive circuits.
      • Very strong experimental activity, including a number of drives at a range of power levels.
    • University of Wisconsin
      • “Modular machines”
        • Discrete pole arrangements that can be assembled in piecewise fashion.
        • Opportunity to integrate pole-based drives with individual machine poles.
        • Challenge in dimensional consistency and rigidity.
      • Good interaction between aspects of power systems and aspects or machines and power electronics.
    • The Ohio State University
      • Analysis-based machine design is alive and well. Several industrial projects.
      • Example: discrete-pole machine with high pole count for washing machine application.
      • Work on dual-rotor machines for flexible applications.
      • Example: concentric machine with one PM rotor and one induction rotor. Provides an electric differential action.
    • The Ohio State University
      • Ohio State maintains one of very few high voltage labs.
      • Lab work is directed at dielectrics and insulation, and to a lesser extent at operational issues in power systems.
    • Oregon State University
      • Strong effort right now in ocean wave energy.
      • Challenge: convert vertical motion to electricity.
      • Direct conversion is needed.
    • Oregon State University
      • Interesting aspect: the political and social efforts associated with licenses and siting.
      • Even very careful and diligent preparation leads to a long, involved process.
      • The Oregon Coast has sufficient wave energy potential to more than supply the entire state.
    • Discussion
      • Outside of CEME, much electromechanics work seems to divide into various camps.
      • Few researchers exploring broad design questions or attempting “apples to apples” technology comparisons.
      • Design automation and design optimization remain excellent topics for current researchers.
    • Discussion
      • Innovations in electromechanics play a dominant role in energy as a whole.
        • Efficient machines would drop energy requirements substantially.
        • Broad use of ac drives also yields high impact.
        • Electric and hybrid vehicles.
        • Other more-electric systems for ships, aircraft, and many off-road mobile systems.