Daniel Ludois

Assistant Professor

Room: 2564
Engineering Hall
1415 Engineering Dr
Madison, WI 53706

Ph: 262-8211
ludois@wisc.edu


Profile Summary

We live in a world that uses energy at an ever increasing rate. As a society striving to be sustainable and environmentally conscious, there is demand for high performance energy systems which utilize fewer resources. Of the various methods to deliver and utilize energy, I am most enamored with electricity. Electric motors and generators, or more generally “electric machines,” are a fundamental building block of modern society. In fact, over 99% of all the electricity on the planet originates from an electric generator regardless of the power source (wind, coal, nuclear, etc.) and roughly 2/3 of that energy goes on to power electric motors. Additionally, power electronics facilitate power conversion in nearly every modern commercial or industrial facility, home, vehicle or device ranging from microwatts to gigawatts.

Recently, my work focuses on a multi-facetted power electronics, fluid mechanics and electrodynamics approach to develop capacitive (rather than inductive) electrical and electromechanical power conversion devices. Applications include wind turbines, electric and hybrid electric vehicles, aerospace, energy storage and infrastructure. My group uses extensive analytical and computer based analysis to design and construct laboratory prototypes for model validation.

Education

  • Ph.D. Electrical Engineering 2011, University of Wisconsin-Madison
  • M.S. Electrical Engineering 2008, University of Wisconsin-Madison
  • B.S. Physics 2006, Bradley University

Research Interests

  • Power electronics
  • Electric machines
  • Non-contact power transfer
  • Sustainable engineering technologies and practices

Publications

Journal

  1. Ge, B., Ludois, D.C., \"Dielectric Liquids for Enhanced Field Force in Macro Scale Direct Drive Electrostatic Actuators and Rotating Machinery,\"  IEEE Transactions on Dielectrics and Electrical Insulation, accepted, to appear 2016.
  2. Ge, B.; Ludois, D.C., \"Design Concepts for a Fluid Filled 3-Phase Axial Peg Style Electrostatic Rotating Machine Utilizing Variable Elastance,\" in Industry Applications, IEEE Transactions on, 2016 Available on IEEE Xplore Early Access doi: 10.1109/TIA.2016.2517075
  3. Dai, J.; Ludois, D.C., \"Capacitive Power Transfer Through a Conformal Bumper for Electric Vehicle Charging,\" in Emerging and Selected Topics in Power Electronics, IEEE Journal of, 2016 Available on IEEE Xplore Early Access doi: 10.1109/JESTPE.2015.2505622
  4. Ludois, D.C.; Reed, J.K., \"Brushless Mitigation of Bearing Currents in Electric Machines Via Capacitively Coupled Shunting,\" in Industry Applications, IEEE Transactions on , vol.51, no.5, pp.3783-3790, Sept.-Oct. 2015 Available on IEEE Xplore
  5. Jiejian Dai; Ludois, D.C., \"A Survey of Wireless Power Transfer and a Critical Comparison of Inductive and Capacitive Coupling for Small Gap Applications,\" in Power Electronics, IEEE Transactions on , vol.30, no.11, pp.6017-6029, Nov. 2015 Available on IEEE Xplore
  6. Dai J.; Ludois D.C.; “Single Active Switch Power Electronics for Kilowatt Scale Capacitive Power Transfer,” Emerging and Selected Topics in Power Electronics, IEEE Journal of, vol.3, no.1, pp.315,323, March 2015Available on IEEE Xplore
  7. Ludois, D.C.; Erickson, M.J.; Reed, J.K., \"Aerodynamic Fluid Bearings for Translational and Rotating Capacitors in Noncontact Capacitive Power Transfer Systems,\" Industry Applications, IEEE Transactions on, vol.50, no.2, pp.1025,1033, March-April 2014. Available on IEEE Xplore
  8. Ludois, D.C.; Venkataramanan, G., \" \"Simplified Terminal Behavioral Model for a Modular Multilevel Converter,\" Power Electronics, IEEE Transactions on, vol.29, no.4, pp.1622, 1631, April 2014. Available on IEEE Xplore
  9. Ludois, D.C.; Reed, J. K.; Hanson, K.; , \"Capacitive Power Transfer for Rotor Field Current in Synchronous Machines,\" Power Electronics, IEEE Transactions on , vol.27, no.11, pp.4638- 4645, Nov. 2012. Available on IEEE Xplore
  10. Ludois, D.C.; Reed, J. K.; Venkataramanan, G., \"Hierarchical Control of Bridge-of-Bridge Multilevel Power Converters,\", IEEE Transactions on Industrial Electronics, vol.57, no.8, pp.2679-2690, Aug. 2010. Available on IEEE Xplore
  11. Ludois, D.C.; Venkataramanan, G.; \"An Examination of AC/HVDC Power Circuits For Interconnecting Bulk Wind Generation with the Electric Grid.\" Energies 3, no. 6: 1263-1289. 2010. open access, mdpi online

Conference

  1. Ge, B.; Ludois, D.C., \"Design concepts for a 3-phase axial peg style electrostatic rotating machine utilizing variable elastance,\" in Energy Conversion Congress and Exposition (ECCE), 2015 IEEE, pp.6519-6528, 20-24 Sept. 2015  Available on IEEE Xplore
  2. Schroedermeier, Andy; Ludois, D.C., \"An integrated inductor and capacitor with co-located electric and magnetic fields,\" in Energy Conversion Congress and Exposition (ECCE), 2015 IEEE, pp.5293-5301, 20-24 Sept. 2015  Available on IEEE Xplore
  3. Ge, B.; Ludois, D.C., \"A 1-phase 48-pole axial peg style electrostatic rotating machine utilizing variable elastance,\" in IEEE International Electric Machines & Drives Conference (IEMDC), 2015 IEEE, pp.604-610, 10-13 May 2015 Available on IEEE Xplore
  4. Hagen, S.; Knippel, R.; Jiejian Dai; Ludois, D.C., \"Capacitive coupling through a hydrodynamic journal bearing to power rotating electrical loads without contact,\" in Wireless Power Transfer Conference (WPTC), 2015 IEEE , vol., no., pp.1-4, 13-15 May 2015. Available on IEEE Xplore
  5. Jiejian Dai; Ludois, D.C., \"Wireless electric vehicle charging via capacitive power transfer through a conformal bumper,\" Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE, pp.3307,3313, 15-19 March 2015. Available on IEEE Xplore
  6. Jiejian Dai; Ludois, D.C., \"Biologically inspired coupling pixilation for position independence in capacitive power transfer surfaces,\" Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE, pp.3276,3282, 15-19 March 2015. Available on IEEE Xplore
  7. Ludois, D.C.; Reed, Justin K., \"Brushless mitigation of bearing currents via capacitively coupled shunting,\" Electrical Machines (ICEM), 2014 International Conference on , vol., no., pp.2336,2342, 2-5 Sept. 2014. Available on IEEE Xplore
  8. Ge, Baoyun; Ludois, D. C.; Perez, Rodolfo, \"The use of dielectric coatings in capacitive power transfer systems,\" Energy Conversion Congress and Exposition (ECCE), 2014 IEEE , pp.2193,2199, 14-18 Sept. 2014. Available on IEEE Xplore
  9. Ge, Baoyun; Ludois, D.C., \"Evaluation of dielectric fluids for macro-scale electrostatic actuators and machinery,\" Energy Conversion Congress and Exposition (ECCE), 2014 IEEE , pp.1457,1464, 14-18 Sept. 2014. Available on IEEE Xplore
  10. Shea, A; Ludois, D.C., \"A flexible and cost effective gate drive platform for rapid prototyping,\" Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE , pp.560,565, 16-20 March 2014. Available on IEEE Xplore
    Gate Driver Board Files
  11. Shea, Adam; Ludois, D.C., \"Reduction of permanent magnets in small-scale wind turbines,\" Energy Conversion Congress and Exposition (ECCE), 2013 IEEE, pp.5105, 5111, 15-19 Sept. 2013.   Available on IEEE Xplore
  12. Mendoza-Araya, Patricio A.; Kollmeyer, Phillip J.; Ludois, D. C., \"V2G integration and experimental demonstration on a lab-scale microgrid,\" Energy Conversion Congress and Exposition (ECCE), 2013 IEEE, pp.5165,5172, 15-19 Sept. 2013. Available on IEEE Xplore
  13. Ludois, D.C.; Reed, J.; Erickson, M., \"Aerodynamic fluid bearings for capacitive power transfer and rotating machinery,\" Energy Conversion Congress and Exposition (ECCE), 2012 IEEE, pp.1932-1937, 15-20 Sept. 2012.  Available on IEEE Xplore
  14. Ludois, D.C.; Venkataramanan, G., \"Simplified dynamics and control of Modular Multilevel Converter based on a terminal behavioral model,\" Energy Conversion Congress and Exposition (ECCE), 2012 IEEE, pp.3520, 3527, 15-20 Sept. 2012.  Available on IEEE Xplore
  15. Ludois, D.C.; Venkataramanan, G., \"Modular multilevel converter as a low inductance machine drive,\" Power and Energy Conference at Illinois (PECI), 2012 IEEE , pp.1,4, 24-25 Feb. 2012. Available on IEEE Xplore
  16. Ludois, D.C.; Hanson, K.; Reed, J.K.; \"Capacitive power transfer for slip ring replacement in wound field synchronous machines,\" Energy Conversion Congress and Exposition (ECCE), 2011 IEEE, pp.1664-1669, 17-22 Sept. 2011.  Available on IEEE Xplore
  17. Ludois, D.C.; Lee, Jonathan; Mendoza, Patricio; Venkataramanan, Giri; , \"Reuse of Post- Consumer E-Waste for Low Cost Micropower Distribution,\" Global Humanitarian Technology Conference (GHTC), 2011 IEEE , pp.137-142, Oct. 30 2011-Nov. 1 2011.  Available on IEEE Xplore
  18. Melendez-Vega,  Pedro  A.;  Venkataramanan,  Giri;  Ludois,  D.C.;  Reed,  Justin;  ,  \"Low-Cost Light-Weight Quick-Manufacturable Blades for Human-Scale Wind Turbines,\" Global Humanitarian Technology Conference (GHTC), 2011 IEEE , pp.154-159, Oct. 30 2011- Nov. 1 2011.  Available on IEEE Xplore
  19. Reed J., Ludois D.C., Hamlin M., \"Power Conversion Coursework Using a Solid State Tesla Coil,\" Proc. 2010 ASEE Annual Conference, June 20-23, 2010, Louisville, KY.

Accomplishments

Awards-Professional

Gerald Holdridge Teaching Excellence Award 2016

NSF CAREER Award 2015

Wisconsin Alumni Research Foundation (WARF) Innovation Award 2012

Wisconsin Governor\'s Business Plan Competition, 2nd place advanced manufacturing track, 2012  

 

Awards-Students performing research with me

Baoyun Ge, Oral session student winner IEEE Energy Conversion Congress & Expostion (ECCE) 2015

Adam Shea, Oral session student winner IEEE Applied Power Electronics Conference (APEC) 2014

 

Awards-During graduate school

Poster Presentation Award, IEEE Energy Conversion Congress & Exposition (ECCE) 2011

2nd Place \"Distingusished Student Humanitarian\" IEEE President\'s Change the World Competition 2011

Grainger Power Engineering Fellow 2010

Grand Prize - Nelson Institute Climate Leadership Challenge 2010

 

 

 

Personal Statement

We live in a world that uses energy at an ever increasing rate. As a society striving to be sustainable and environmentally conscious, there is demand for high performance energy systems which utilize fewer resources. Of the various methods to deliver and utilize energy, I am most enamored with electricity. Electric motors and generators, or more generally “electric machines,” are a fundamental building block of modern society. In fact, over 99% of all the electricity on the planet originates from an electric generator regardless of the power source (wind, coal, nuclear, etc.) and roughly 2/3 of that energy goes on to power electric motors. Additionally, power electronics facilitate power conversion in nearly every modern commercial or industrial facility, home, vehicle or device ranging from microwatts to gigawatts.

Recently, my work focuses on a multi-facetted power electronics, fluid mechanics and electrodynamics approach to develop capacitive (rather than inductive) electrical and electromechanical power conversion devices. Applications include wind turbines, electric and hybrid electric vehicles, aerospace, energy storage and infrastructure. My group uses extensive analytical and computer based analysis to design and construct laboratory prototypes for model validation

Courses

Summer 2016

  • ECE 699 - Advanced Independent Study

  • ECE 790 - Master\'s Research or Thesis
  • ECE 890 - Pre-Dissertator\'s Research
  • EMA 890 - Pre-Dissertator Research
  • ECE 411 - Introduction to Electric Drive Systems
  • ECE 601 - Special Topics in Electrical and Computer Engineering
  • ECE 790 - Master\'s Research or Thesis
  • ECE 890 - Pre-Dissertator\'s Research
  • EMA 890 - Pre-Dissertator Research
  • ECE 699 - Advanced Independent Study
  • Profile Summary

    We live in a world that uses energy at an ever increasing rate. As a society striving to be sustainable and environmentally conscious, there is demand for high performance energy systems which utilize fewer resources. Of the various methods to deliver and utilize energy, I am most enamored with electricity. Electric motors and generators, or more generally “electric machines,” are a fundamental building block of modern society. In fact, over 99% of all the electricity on the planet originates from an electric generator regardless of the power source (wind, coal, nuclear, etc.) and roughly 2/3 of that energy goes on to power electric motors. Additionally, power electronics facilitate power conversion in nearly every modern commercial or industrial facility, home, vehicle or device ranging from microwatts to gigawatts.

    Recently, my work focuses on a multi-facetted power electronics, fluid mechanics and electrodynamics approach to develop capacitive (rather than inductive) electrical and electromechanical power conversion devices. Applications include wind turbines, electric and hybrid electric vehicles, aerospace, energy storage and infrastructure. My group uses extensive analytical and computer based analysis to design and construct laboratory prototypes for model validation.


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