Researcher: Robert Lorenz

Areas of Research Expertise
  • Advanced manufacturing
  • Advancing health care
  • Energy independence
  • Environmental sustainability
  • Improving security
  • Materials discovery and sustainability
  • Transportation infrastructure
  • Control of electromagnetic actuators and power electronics
  • Integration of sensing and control in power conversion
  • Physics-based multivariable control design methodologies
  • Design for sensing and control using multi-physics integration
Web Site Robert Lorenz's Department of Mechanical Engineering Website
Curriculum Vitae (CV)
Current/Active Funding
  • WARF, 2000-2020, Laboratory share of royalty and licensing - Professor Robert D Lorenz
  • Toyota Motor Corp., 2014-2016, Investigation of Deadbeat Control for DC-to-DC Converters with Integrated Active Loss Minimizing Control
  • Mitsubishi Electric, 2015-2016, Investigation of PM servo motor design and modeling for dynamic loss minimizing control, deadbeat torque control and self-sensing control
Issued Patent(s)
  • 9,281,772 - Controller for power converter, issued March 2016.
  • 9,214,861 - Loss optimization control for DC-to-DC converter, issued December 2015.
  • 9,116,197 - Integrated interconnect and magnetic-field detector for current sensing, issued August 2015.
  • 8,531,143 - Permanent magnet motor with stator-based saliency for position sensorless drive, issued September 2013.
  • 7,522,434 - Temperature estimation based on a signal oscillation, issued April 2009.
USPTO Published Applications
  • 20150381092 - Controller for power converter, published December 2015.
  • 20150340915 - Variable magnetic flux-type otay electric machine, published November 2015.
  • 20150137648 - Variable magnetomotive force rotary electric machine and control device for variable magnetmotive force rotary electric machine, published May 2015.
  • 20150002121 - Loss optimization control for dc-to-dc converter, published January 2015.
Recent Publication(s)
  • Single sensor three-phase permanent magnet synchronous motor drive based on luenberger style-observers. Hafez B, Abdel-Khalik A, Massoud A, Ahmed S, R Lorenz. ICEMS. 2012 Oct ;():1-6. ISBN: 978-1-4673-2327-7

  • Time optimal torque control and loss minimization in ac machines using deadbeat direct torque and flux control. Lee J, Xu W, Hurst Z, Bradley B, F Quattrone, R Lorenz. ICEMS. 2011 Aug 20:1-6. doi: 10.1109/ICEMS.2011.6073388.

  • Using the traction drive as the sensor to evaluate and track deterioration in electrified vehicle gearboxes. Wolf C, Hanson K, Lorenz R, Anibal Valenzuela M. ECCE. 2012 Sept 15:4164-4171. doi: 10.1109/ECCE.2012.6342257.

  • Generalized correlations for the estimation of condensate power in flooded cylinders. Ramirez G, Valenzuela M, Lorenz R. IEEE Transactions on Industry Applications. 2013 Aug 28;50(2):1577-1589. doi: 10.1109/TIA.2013.2279907.
Recent Artistic Works
  • Center for Power Electronics Systems
  • Wisconsin Electirc Machines and Power Electronics Consortium
  • Hamilton Sundstrand
  • Siemens VDO Electric Drives, Inc
  • University of Rome, “La Sapienza”, Department of Electrical Engineering
Research Tools
Research Facilities
E-mail Address [email protected]
Phone Number 608-262-5343
Current University UW–Madison
Department Electrical and Computer Engineering / Mechanical Engineering
Title Professor
Other Appointments
Address Line 1 2025 Mechanical Engineering Building
Address Line 2 1513 University Avenue
City Madison
State WI
Zip Code 53706
Bachelor's Degree B.S., UW–Madison, 1969
Master's Degree M.S., UW–Madison, Adaptive Control, 1970
PhD Ph.D., UW–Madison, Electro-Optical Sensing, 1984
Other Degrees M.B.A., University of Rochester, Executive Development Program, 1980
Technologies Available for Licensing Temperature Estimation Based on a Signal Oscillation

Reducing DC-DC Converter Loss for More Efficient Cars

Permanent Magnet Synchronous Motor Self-Sensing Drive System

Semiconductor Interconnect Design for Small, Inexpensive, Integrated Current Sensing with Improved Reliability