Dimosthenis C. Katsis

Work Address Permanent Address

Athena Energy Corp. 13602 Ulysses Ct

13602 Ulysses Ct. Bowie, MD 20720

Bowie, MD 20720 (301) 352 8454

(240) 383-9000 email:

EDUCATION: B.S.E.E., May 1995: Virginia Tech, Blacksburg, VA

M.S.E.E., August 1997: Development of a Testbed for Evaluation of Electric Vehicle Drive Performance Virginia Tech, Blacksburg, VA

Ph.D. May 2003: Thermal Characterization of Die-Attach Degradation in the Power MOSFET

Virginia Tech, Blacksburg, VA

John Hopkins University Jan 2009 - Present

·  Engineering Professional Program Graduate School Instructor

Athena Energy Corp June 2006 - Present

·  Reliability Analysis services for a major lighting manufacturer and failure analysis for a solar manufacturer for diode and MOSFET root cause analysis

·  Development of high-temperature power supply systems for automotive customers

·  Design and development of wide-input power supplies for solar power manufacturer

·  Optimization and troubleshooting inverter designs

·  Development of high temperature, wide bandwidth current measurement systems.

·  Awarded SBIR OSD06-EP7 “Robust Silicon Carbide Power Switch Module Technologies”

US Army Research Laboratory: Adelphi, MD June 2002 – June 2006

·  Team Leader: Power Semiconductor Characterization and Applications of high temp JFET, BJT, and MOSFET silicon carbide power devices

·  Lead development of 10 kilowatt AC-AC Power supply for battlefield power

·  Lead development of high temperature (250°C) Silicon Carbide AC motor drive

Center for Power Electronics Systems: Blacksburg, VA August 1999 – Jan 2003

·  Dissertation and Defense of Thermal Characterization of Power Semiconductor Devices

·  Development of Electro-Thermal Characterization System to Find Faults in Power Semiconductors

·  Training of mechanical engineering graduate students in reliability measurements of semiconductors at the University of Maryland Reliability Lab (CALCE)

·  Development of power semiconductor hardware for General Motors - Electric Vehicle Inverter

GE Industrial Systems: Salem, VA August 1997 –August 1999

·  Completion of GE’s Technical Leadership (Edison Engineering) Program

·  Test Leader for IGCT-Based 14 Megawatt AC Motor Drive

·  Team Leader for Large Semiconductor Device Characterization (IGCT) 4.5kV 4kA

·  Power System Design Leader for GE’s Next Generation Excitation Controller

·  Marketing Team Leader for Plastics Industry Application of AC Drives

Virginia Power Electronics Center: Blacksburg, VA June 1995 – August 1997

·  Team Lead for DARPA Funded (RA-94 Program) Development of High Efficiency-Reduced Cost Electric Vehicle AC Motor

·  Microcontroller and Field Programmable Gate Array Programming for DARPA Inverter

·  Design and construction of a 75 kilowatt electric motor dynamometer laboratory

·  Designed and built 20 kW Battery Charger for Hybrid Electric Vehicles

Design Engineer August 1995 – August 1997

·  Development of liquid level controllers using sequential pump switching and non-corrosive water level measurement

·  Supported research on embedded microcontroller programming and implementation

Hybrid-Electric Vehicle Project / Solar-Electric Vehicle Project Sept. 1991- June 1995

·  Team Leader for Electrical Systems of the Hybrid-Electric Vehicle Development Team at Virginia Tech

·  Developed Automatic Engine-Battery Charger Controller for Hybrid Electric Vehicle

·  Designed and Constructed Solar Array Power Switching Units With Simple Adaptive Control For Maximum Power Tracking

·  Responsible for Lead Acid Battery Characterization and Performance Measurement

PUBLICATIONS

Primary Authorship:

1.  Katsis D.C., Litz M. A. “Development of a Wireless Radioactive Material Sensor Network ” SORMA Conference 2010

2.  Katsis D.C., Burns D., Henriquez S., and Litz M. “Development of low-power wireless networked radioactive material sensor” SPIE Conference 2010

3.  Invited Paper: D. C. Katsis “Performance and Reliability of High Energy Capacitors in Inverters and DC/DC Converters”, in proceedings of ASME Congress November 2009, Lake Buena Vista, Florida, USA

4.  Katsis, D.C.; Yunqi Zheng; “Development of an extreme temperature range silicon carbide power module for aerospace applications” Power Electronics Specialists Conference, 2008. PESC 2008. IEEE, 15-19 June 2008 Page(s):290 – 294

5.  Yunqi Zheng, Dimosthenis Katsis, "Investigation of Silicone-Based Encapsulants for a High Temperature Power Module" Conference proceedings of IMAPS 2007

6.  Katsis D. C. ; vanWyk J. D. ; “A Thermal, Mechanical, and Electrical Study of Voiding in the Solder Die-Attach of Power MOSFETs” IEEE Transactions on Components and Packaging Technologies, Vol 29 Issue 1; March 2006, page 127-136

7.  Katsis, D.; Geil, B.; Griffin, T.; Koebke, G.; Kaplan, S.; Ovrebo, G.; Bayne, S.; “Silicon carbide power semiconductor module development for a high temperature 10kW AC drive” Industry Applications Conference, 2005. Conference Record of the Fourtieth IAS Annual Meeting. 2005, Volume 1, 2-6 Oct. 2005 Page(s):399 – 403

8.  Katsis, D.; Wheeler, P.W.; Clare, J.C.; Empringham, L.; Bland, M.; “A utility power supply based on a four-output leg matrix converter” Industry Applications Conference, 2005. . Conference Record of the Fourtieth IAS Annual Meeting 2005, Volume 4, 2-6 Oct., 2005 Page(s):2355 - 2359

9.  Podlesak, T.F.; Katsis, D.C.; Wheeler, P.W.; Clare, J.C.; Empringham, L.; Bland, M.; “A 150-kVA Vector-Controlled Matrix Converter Induction Motor Drive” IEEE Transactions on Industry Applications, Volume 41, Issue 3, May-June 2005 Page(s):841 – 847

10.  Katsis, D.; Wheeler, P.; Clare, J.; Zanchetta, P.; “A three-phase utility power supply based on the matrix converter” Conference Record of the 2004 IEEE Industry Applications Conference, 2004. 39th IAS Annual Meeting. Volume 3, 3-7 Oct. 2004 Page(s):1447 - 1451 vol.3

11.  D. C. Katsis, J.D. vanWyk, “Void Induced Thermal Impedance in Power Semiconductor Modules: Some Transient Temperature Effects”, Transactions of the IEEE Industry Applications Society, Volume: 39 , Issue: 5 , Sept.-Oct. 2003, pp:1239 – 1246

12.  D.C. Katsis, J.D. vanWyk, “A finite element modeling of dynamic hot spot effects in MOSFET dies due to voiding in the solder die-attach”, IEEE 34th Annual Conference of Power Electronics Specialists 2003. June 2003, vol.2. pp: 828 - 833

13.  D. C. Katsis, J.D. vanWyk, “Experimental Measurement and Simulation of Thermal Performance Due to Aging in Power Semiconductor Devices”, 2001 IEEE Industry Applications Society Proceedings, Oct. 2002, vol.3, pp:1746 - 1751

14.  D. C. Katsis, J.D. vanWyk, “Void Induced Thermal Impedance in Power Semiconductor Modules: Some Transient Temperature Effects”, IEEE Industry Applications Society Proceedings, Sept-Oct. 2001, vol.3, pp:1905 - 1911

15.  D. C. Katsis, J.D. vanWyk, “Thermal Impedance Measurements in Power Semiconductor Modules”, CPES Seminar Proceedings, April. 2001

16.  Invited Paper: D. C. Katsis, M. Herwald, J. Choi, D. Borojevic, and F.C. Lee, “Drive Cycle Analysis of an Electric Vehicle Inverter”, in proceedings of IECON ‘97, pp. 658-663

17.  Master’s Thesis: D. C. Katsis, “Development of a Testbed for the Evaluation of Electric Vehicle Drive Performance”, Virginia Polytechnic Institute and State University, 1997

18.  D. C. Katsis, F.C. Lee, “A Single Buck Converter for Hybrid Vehicle Generators”, Proceedings of the Workshop on Power Electronics in Transportation, 24-25 Oct. 1996 Page(s):117 - 124.

Contributing Authorship:

  1. Wheeler, P.W.; Zanchetta, P.; Clare, J.C.; Empringham, L.; Bland, M.; Katsis, D.; “A Utility Power Supply Based on a Four-Output Leg Matrix Converter” IEEE Transactions on Industry Applications,
    Volume 44, Issue 1, Jan.-feb. 2008 Page(s):174 – 186
  2. Zanchetta, P.; Wheeler, P.W.; Clare, J.C.; Bland, M.; Empringham, L.; Katsis, D.; “Control Design of a Three-Phase Matrix-Converter-Based AC–AC Mobile Utility Power Supply” IEEE Transactions on Industrial Electronics, Volume 55, Issue 1, Jan. 2008 Page(s):209 – 217
  3. Trentin, A.; Zanchetta, P.; Wheeler, P.; Clare, J.; Wood, R.; Katsis, D.; “A New Method for Induction Motors Parameter Estimation Using Genetic Algorithms and Transient Speed measurements” Conference Record of the 2006 IEEE Industry Applications Conference, 2006. 41st IAS Annual Meeting, Volume 5, Oct. 2006 Page(s):2435 - 2440.
  4. Podlesak, T.F.; Katsis, D.C.; Wheeler, P.W.; Clare, J.C.; Empringham, L.; Bland, M.; “A 150-kVA vector-controlled matrix converter induction motor drive” Industry Applications, IEEE Transactions on Volume 41, Issue 3, May-June 2005 Page(s):841 – 847
  5. Sei-Hyung Ryu; Krishnaswami, S.; Hull, B.; Heath, B.; Das, M.; Richmond, J.; Fatima, H.; Jon Zhang; Agarwal, A.; Palmour, J.; Lelis, A.; Geil, B.; Katsis, D.; Scozzie, C.; Scofield, J.; “High Speed Switching Devices in 4H-SiC - Performance and Reliability” Semiconductor Device Research Symposium, 2005 International Dec. 7-9, 2005 Page(s):162 – 163
  6. Zanchetta, P.; Clare, J.C.; Wheeler, P.; Katsis, D.; Bland, M.; Empringham, L.; “Control Design of a Three-phase Matrix Converter Mobile AC Power Supply using Genetic Algorithms” Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th 2005 Page(s):2370 - 2375
  7. K. Stinson-Bagby, D. C. Katsis, G. Q. Lu, J. D. vanWyk, “A Failure Analysis Study of Semiconductor Power Device Construction” CPES Seminar Proceedings, April. 2002
  8. S. Frame, D. C. Katsis, D. H. Lee, D. Borojevic, F.C. Lee, “A Three-Phase Zero-Voltage-Transition Inverter with Inductor Feedback”, in proceedings of the European Power Electronics Society ‘97
  9. S. Frame, D. C. Katsis, D. H. Lee, D. Borojevic, F.C. Lee, “Three-Phase Soft-Switching Inverters for Electric Vehicle Applications”, in proceedings of VPEC Seminar ‘95, pp. 45-52.
  10. W. Stinnett, D. C. Katsis, “Design of the Virginia Tech Hybrid-Electric Vehicle”, Society of Automotive Engineers Journal of Hybrid-Electric Vehicles 1995

ORGANIZATIONS AND AWARDS

At-large Member, Power Electronics Society: Baltimore Chapter 2006-2008

Secretary IEEE Industry Applications Society 2005-2006

Winner of the 2005 Army Research and Development Award “High Temperature Silicon-Carbide Electronics for an AC Motor Drive”

2004 Best Paper Award for “A 150 kVA vector controlled matrix converter induction motor drive”

Allen C. Bradley Scholar/ Rockwell Science Center Fellowship for 2001-2002

Allen C. Bradley Scholar/Rockwell Science Center Fellowship for 2000-2001

Allen C. Bradley Scholar/CPES Fellowship for 1999-2000

GE Corporate Recognition Award for Excellence in Rotation (Marketing) 1999

GE Corporate Recognition Award for Engineering Achievements in Power Conversion 1998

GE Intellectual Property award as a finalist in the Invention Disclosure Competition, 1999

GE Outstanding Technical Support for PWM-3 AC Drive Design 1997

Institute of Electrical and Electronic Engineers (IEEE), student branch member of the year 1994

American Society of Mechanical Engineers Technical Presentation Competition: First Place in Region 1992

Duracell/NSTA Scholarship 1991