Yehui Han

Assistant Professor

2559C Engineering Hall
1415 Engineering Drive
Madison, WI 53706

Ph: (608) 262-2126
Fax: (608) 262-1267
yehui@engr.wisc.edu


Profile Summary

The rapid development of renewable energy technology and the need for greater energy efficiency demands power electronics with greatly increased capabilities. The physical size and cost of power electronic equipment are major limitations preventing improved energy utilization and efficiency in many applications. An important method for reducing the size (and ultimately cost) of power electronics is through increasing switching frequency. Design at very high frequencies (VHF) reduces energy storage requirements and permits the use of smaller passive components. However, there have traditionally been practical obstacles to the use of higher frequencies, such as low efficiency. My ongoing research focuses on developing new circuit designs, novel magnetic components and means of applying new devices to achieve orders of magnitude increase in frequency over the current state-of-art while maintaining high efficiency. This, in turn, opens up new possibilities for how power electronics can be designed and applied. My primary research interests are in power electronics and their applications in renewable energy and energy efficiency. Power electronics efficiently convert and control electrical energy and provide reliable and high quality electrical power. Power electronics are essential to future energy networks, both for interconnecting renewable energy sources and storage devices to distribution networks and for enabling more efficient utilization of energy. With increased emphasis on energy savings and environmental pollution problems, power electronics having new functionality and higher performance will be needed in myriad applications including solar and wind power, fuel cells, electric/hybrid vehicles, and all kinds of commercial and residential applications.

Education

  • PhD 2010, Massachusetts Institute of Technology
  • MS 2003 and BS 2000, Tsinghua University

Research Interests

  • Power Electronics
  • High-Power-Density Integrated Machine Drives
  • Battery Management Systems
  • Renewable Energy and Energy Efficiency

Awards, Honors and Societies

  • IEEE Power Electronics Transactions First Prize Paper Award, 2013
  • IEEE Power Electronics Transactions Second Prize Paper Award, 2013
  • IEEE Power Electronics Transactions Prize Paper Award, 2008
  • IEEE Power Electronics PESC Conference Prize Paper Award, 2008
  • MIT Landsman Fellowship, 2007-2008

Publications

  • Y. Han, and J. Chen, \"Harmonic resonance phenomena in STATCOM and relationship to parameters selection of passive components,\" 36th Intersociety Energy Conversion Engineering Conference, 2001.
  • Y. Han, J. Chen, C. Hu, \"SVC distributed control system design and implementation,\" IEEE/PES-CSEE International Conference on Power System Technology, pp. 2294-2297, Oct. 2002.
  • Y. Han, J. Chen and S. Guan, \"SVC distributed control system using digital signal processing, industrial computers and networking,\" Journal of Tsinghua University (Science and Technology), vol. 43, no. 9, pp. 1206-1209, Sept. 2003.
  • Y. Han, O. Leitermann, D. A. Jackson, J. M. Rivas, and D. J. Perreault, \"Resistance compression networks for resonant power conversion,\" IEEE Power Electronics Specialists Conference, pp. 1282-1292, Jun. 2005.
  • J. M. Rivas, D. A. Jackson, O. Leitermann, A. D. Sagneri, Y. Han, and D. J. Perreault, \"Design considerations for very high frequency dc-dc converters,\" IEEE Power Electronics Specialists Conference, pp. 2287-2297, Jun. 2006.
  • Y. Han, and D. J. Perreault, \"Analysis and design of high efficiency matching networks,\" IEEE Transactions on Power Electronics, vol. 21, no. 5, pp. 1484-1491, Sept. 2006.
  • Y. Han, O. Leitermann, D. A. Jackson, J. M. Rivas, and D. J. Perreault, \"Resistance compression networks for radio-frequency power conversion,\" IEEE Transactions on Power Electronics, vol. 22, no. 1, pp 41-53, Jan. 2007.
  • J. M. Rivas, Y. Han, O. Leitermann, A. D. Sagneri, and D. J. Perreault, \"A high-frequency resonant inverter topology with low-voltage stress,\" IEEE Power Electronics Specialists Conference, pp. 2705-2717, Jun. 2007.
  • J. Hu, A. D. Sagneri, J. M. Rivas, Y. Han, S. M. Davis, and D. J. Perreault, \"High frequency resonant SEPIC converter with wide input and output voltage ranges,\" IEEE Power Electronics Specialists Conference, pp. 1397-1406, Jun. 2008.
  • J. M. Rivas, O. Leitermann, Y. Han, and D. J. Perreault, \"A very high frequency dc-dc converter based on a class Phi-2 resonant inverter,\" IEEE Power Electronics Specialists Conference, pp. 1657-1666, Jun. 2008.
  • Y. Han, G. Cheung, A. Li, C. R. Sullivan, and D. J. Perreault, \"Evaluation of magnetic materials for very high frequency power applications,\" IEEE Power Electronics Specialists Conference, pp. 4270-4276, Jun. 2008.
  • J. M. Rivas, Y. Han, O. Leitermann, A. Sagneri, and D. J. Perreault, \"A high-frequency resonant inverter topology with low-voltage stress,\" IEEE Transactions on Power Electronics, vol. 23, no. 4, pp. 1759-1771, Jul. 2008.
  • D. J. Perreault, J. Hu, J. M. Rivas, Y. Han, O. Leitermann, R. Pilawa-Podgurski, A. D. Sagneri, and C. R. Sullivan, \"Opportunities and challenges in very high frequency power conversion,\" IEEE Applied Power Electronics Conference, pp. 1-14, Feb. 2009.
  • Y. Han, and D. J. Perreault, \"Inductor design methods with low-permeability rf core materials,\" IEEE Energy Conversion Congress and Exposition, pp. 4376-4383, Sept. 2010.
  • Y. Han, and D. J. Perreault, \"Inductor design methods with low-permeability rf core materials,\" IEEE Transactions on Industry Applications, vol. 48, no. 5, pp. 1616-1627 Sept./Oct. 2012.

Courses

Fall 2014-2015

  • ECE 999 - Advanced Independent Study

  • ECE 990 - Research or Thesis
  • ECE 890 - Pre-Dissertator\'s Research
  • ECE 790 - Master\'s Research or Thesis
  • ECE 699 - Advanced Independent Study
  • ECE 399 - Independent Study
  • ECE 342 - Electronic Circuits II
  • Profile Summary

    The rapid development of renewable energy technology and the need for greater energy efficiency demands power electronics with greatly increased capabilities. The physical size and cost of power electronic equipment are major limitations preventing improved energy utilization and efficiency in many applications. An important method for reducing the size (and ultimately cost) of power electronics is through increasing switching frequency. Design at very high frequencies (VHF) reduces energy storage requirements and permits the use of smaller passive components. However, there have traditionally been practical obstacles to the use of higher frequencies, such as low efficiency. My ongoing research focuses on developing new circuit designs, novel magnetic components and means of applying new devices to achieve orders of magnitude increase in frequency over the current state-of-art while maintaining high efficiency. This, in turn, opens up new possibilities for how power electronics can be designed and applied. My primary research interests are in power electronics and their applications in renewable energy and energy efficiency. Power electronics efficiently convert and control electrical energy and provide reliable and high quality electrical power. Power electronics are essential to future energy networks, both for interconnecting renewable energy sources and storage devices to distribution networks and for enabling more efficient utilization of energy. With increased emphasis on energy savings and environmental pollution problems, power electronics having new functionality and higher performance will be needed in myriad applications including solar and wind power, fuel cells, electric/hybrid vehicles, and all kinds of commercial and residential applications.


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