VITA OF S. YUVARAJAN

Office: 101M ECE Department
Phone Number: 701-231-7365
Fax number: 701-231-8677
 
 

Research Interests

Power Electronics, Electronics

Education

Ph.D. Indian Institute of Technology, Madras, India - 1981
M.Tech. Indian Institute of Technology, Madras, India - 1969
B.E.(Hons) Government College of Technology, Coimbatore, India - 1966

Publications

A. Journal Publications
1.    S. Yuvarajan and B. Ramaswami, "Suboptimal approach to the time optimal control of second order
       systems with complex poles," IEEE Trans. Automatic Control, Vol. AC-14, 1969.

2.    S. Yuvarajan and B. Ramaswami, "Time-optimal quasi-stationary switching boundary for third system," Int.
       Journal of Control, Vol. 14, 1971.

3.   V. Subbiah and S. Yuvarajan, "On charging of ideal capacitors," Indian Journal of Technical Education, Vol.
      2, 1973.

4.   S. Yuvarajan, B. Ramaswami and V. Subrahmanyam, "Analysis of current controlled inverter-fed induction
      motor drive using digital simulation," IEEE Trans. Industrial Electronics and Control Instrumentation, Vol.
      IECI-27, May 1980.

5.  V. Subrahmanyam, S. Yuvarajan and B. Ramaswami, "Analysis of a current inverter feeding an induction
      motor load," IEEE Trans. Industry Applications, Vol. IA-16, May/June 1980.

6.   B. Ramaswami and S. Yuvarajan, "Speed control of a squirrel cage induction motor using a current-fed
      inverter," Electronics and Electricals, April 1983.

7.  Abdollah Khoei and S. Yuvarajan, "Dynamic braking of induction motors using dc injection," Electrical
     Machines and Power Systems, Vol. 10, No.5, 1985.

8.  A. Khoei and S. Yuvarajan, "Single phase ac-ac converters using Power MOSFET's," IEEE Trans. on
     Industrial Electronics, Vol. 35, no. 3, Aug. 1988.

9.  Hwa-liang Chiou, S. Yuvarajan, J. Weimer, and G. Fronista, "A novel method of using waveform generators
      for sine pulse width modulation," IEEE Trans. Aerospace and Electronic Systems, Vol. 30, April 1994.

10. S. Yuvarajan and H. Chiou, "A novel sine PWM scheme using waveform generators, " IEEE Trans. Industrial
      Electronics, Vol. 41, June 1994.

11. Danny Quek and S. Yuvarajan, "Control and protection circuit drives variable power factor MCT converter,"
      Power Conversion and Intelligent Motion, August 1994.

12.  S. Yuvarajan and Danny Quek, "A simple PSPICE model for the MCT," IEEE Trans. Industrial Electronics,
      Vol. 42, No. 5, October 1995.

13. D. Weng and S. Yuvarajan, "Constant-Switching-Frequency AC-DC converter using
      second-Harmonic-Injected PWM," IEEE Trans. Power Electronics, Vol. 11, No. 1, pp. 115-121, January 1996.

14. D. Weng and S. Yuvarajan, "Resonant-boost-input three-phase power factor corrector."
      IEEE Trans. Power Electronics, Vol. 14, No. 6, pp. 1149 -1155,  November 1999.

15. S. Yuvarajan and Abdollah Khoei, “A novel PWM for harmonic reduction and its application to ac-dc
      converters,” IETE Journal of Research, Vol. 48, No. 2, pp. 85-92, March-April 2002.

16. A. Khoei, Kh. Hadidi, S. Jamal, and S. Yuvarajan, “Speed control of a dc motor using a new fuzzy controller,”
IETE Journal of Research, Vol. 48, No. 2, pp. 93-98, March-April 2002.

 

17. S. Yuvarajan, D. Yu and S. Xu, “ A novel power converter for photovoltaic applications,” Journal of Power
Sources, Vol. 135, No. 1-2, pp. 327 – 331, Sept. 2004.

 

18. D. Yu and S. Yuvarajan, “Electronic circuit model for Proton Exchange Membrane fuel cells,” Journal of Power
Sources, Vol. 142, No. 1-2, pp. 238 -242, March 2005.

 

19. Yinying Kuai and S. Yuvarajan, “An electronic load for testing photovoltaic panels,” Journal of Power Sources,
Vol. 154, pp. 308 – 313, 2006.

 

20.  K. Zhou, J.G. Zhang, S. Yuvarajan, and D. Weng, “Quasi-active power factor correction circuit for HB LED driver,”
IEEE Trans. Power Electronics, Vol. 23, No. 3, pp. 1410 – 1415, May 2008.

 

21. S. Yuvarajan and Linging Fan, “A doubly-fed induction generator-based wind generation system with quasi-sine
rotor injection,” Journal of Power Sources, Vol. 184, No. 1, pp. 325-330, Sept. 2008.

 

22.  Z. Miao, L. Fan, D. Osborn, and S. Yuvarajan, “Control of DFIG based Wind Generation to Improve Inter-Area
Oscillation Damping,” IEEE Transactions on Energy Conversion, Vol. 24, No. 2, pp. 415-422, June 2009.

 

B. Publications in Refereed Conference Proceedings

1.   V. Subrahmanyam, S. Yuvarajan and B. Ramaswami, "On the utility of Park's vector in the analysis   of
      commutation of a current source inverter feeding an induction motor," Proc. of Industrial Applications Society
      Annual Meeting, Toronto, Oct. 1978.

2.   S. Yuvarajan and B. Ramaswami, "Digital simulation of a thyristor-fed dc motor drive," Proc. of the
      27th Midwest Symposium on circuits and systems, Morgantown, WV, 1984.

3.   S. Yuvarajan, "Digital simulation of a solid state dc  motor drive using SPICE," Proc. of the 29th Midwest
      Symposium on Circuits and Systems, Lincoln, NE, 1986.

4.   S. Yuvarajan, A. Khoei, and C.H. Chan, "Microprocessor based dc motor controller using Power MOSFET,"
      Proc. of the Midwest Symposium on Circuits and Systems, Syracuse, NY, 1987.

5.   A. Khoei and S. Yuvarajan, "Analysis of a rotor controlled induction motor drive using digital simulation," Proc.
      of the Midwest Symposium on Circuits and Systems, Syracuse, NY, 1987.

6.   S. Yuvarajan and Abdollah Khoei, "Harmonic behavior of three phase induction motorsfed by direct ac-ac
      converters," Midwest Symposium on Circuits and Systems, St. Louis, 1988.

7.    Abdollah Khoei and S. Yuvarajan, "Single phase direct ac-ac converter and its application to induction motor
       drive,"  Midwest Symposium on Circuits and Systems,  St. Louis, 1988.

8.    S. Yuvarajan and A. Khoei, "An improved direct ac-ac converter and its application to three phase induction
       motor control," Proc. IEEE  IAS Annual Meeting, Pittsburg, Oct. 1988.

9.    S. Yuvarajan, "Transfer function of a current-fed induction motor," Proc. of the 32nd Midwest Symposium on
       Circuits and Systems, Champaign, IL, July 1989.

10.  Abdollah Khoei and S. Yuvarajan, "Steady state performance of a single phase induction motor fed by a direct
       ac-ac converter," Proc. IEEE IAS Annual Meeting, San Diego, 1989

11.   S. Yuvarajan, "DC to dc power conversion using IGBT switches," Proc. of the 33rd Midwest Symposium on
       Circuits and Systems, Calgary, 1990.

12.   S. Yuvarajan, "Switching characteristics of an IGBT," Proc. IEEE IAS Annual Meeting, Seattle, Oct. 1990.

13.   S. Yuvarajan and Lu Wang, "Power conversion and control using a current sensing       Power MOSFET,"
       Proc. of the 34th Midwest Symposium on Circuits and Systems, Monterey, CA, May 1991.

14.   S. Yuvarajan, "Gate control circuit and switching characteristics of a MOS Controlled Thyristor (MCT)."Proc.
       IEEE IAS Annual Meeting, Dearborn, MI, Sept./Oct.1991.

15.   S. Yuvarajan and L. Wang, "Performance analysis and signal processing in a current sensing Power MOSFET
        (SENSEFET)," Proc. IEEE IAS Annual Meeting, Dearborn, MI,  Sept./Oct. 1991.

16.   S. Yuvarajan and Hwa-liang Chiou, "Development of a novel PWM scheme for resonant dc link inverters,"
       Proc. of Intersociety Energy Conversion Engineering Conference," Atlanta, GA, Aug. 1993.

17.   S. Yuvarajan, H. Chiou, J. Weimer, and G. Fronista, "Resonant dc link inverters with sine PWM control," Proc.
       of Midwest Symposium on Circuits and Systems, Detroit, MI, Aug. 1993.

18.   S. Yuvarajan, Danny Quek, and J. Weimer, "Switching characteristics and PSPICE model of an MCT," Proc.
       of IEEE IAS Annual meeting, Toronto, Canada, Oct. 1993.

19.   S. Yuvarajan and Hwa-liang Chiou, "Waveform-generator-based sine PWM scheme for resonant dc link
       inverters," Proc. of Applied Power Electronics Conference and Exposition, Orlando, FL, Feb. 1994.

20.   S. Yuvarajan, M. Chen, J. Weimer, and G. Fronista, "DC-DC power conversion using a resonant link," Proc.
       of Intersociety Energy Conversion Engineering Conference, Monterey, CA, Aug. 1994.

21.  Danny Quek, S. Yuvarajan, J. Weimer, and G. Fronista, "Development of variable-power-   factor MCT
       converters," Proc. of Intersociety Energy Conversion Engineering Conference, Monterey, CA, Aug. 1994.

22.  Danny Quek and S. Yuvarajan, "Design of control and protection schemes for MCT converters," Proc. of
       Midwest symposium on circuits and Systems, Lafayette, LA,  Aug. 1994.

23.  M. Chen and S. Yuvarajan, "Development of a dc chopper fed a resonant dc link," Proc. of  Midwest
       Symposium on Circuits and Systems, Lafayette, LA , Aug. 1994.

24.  Danny Quek and S. Yuvarajan, "A novel gate drive for the MCT incorporating overcurrent protection," Proc. of
       IEEE IAS Annual Meeting, Denver, CO, Oct. 1994.

25.  S. Yuvarajan, R. Nelson, and Danny Quek, "A study of the effects of snubber on switching loss and EMI in an
      MCT converter," Proc. of IEEE IAS Annual Meeting, Denver, CO, Oct. 1994.

26. Danny Quek and S. Yuvarajan, "A novel PWM scheme for harmonic reduction in power converters," Proc. of
      International Conference on Power Electronics and Drive systems, Singapore, February 1995.

27.  DaFeng Weng and S. Yuvarajan, "Constant-switching-frequency ac-dc converter using second-harmonic
       injected PWM," Proc. of IEEE  Applied Power Electronics Conference and Exposition, Dallas, Texas, March
      1995.

28.  DaFeng Weng and S. Yuvarajan, "AC-DC converter using second-harmonic-injected PWM," Proc. IEEE
       Power Electronics Specialists Conference , Atlanta, Georgia, June 1995.

29.  DaFeng Weng and S. Yuvarajan, "Analysis of a boost-type power factor corrector using a conductance model,
      Proc. of IEEE Applied Power Electronics Conference and Exposition, San Jose, California, March 1996.

30.  DaFeng Weng and S. Yuvarajan, "A novel full bridge zero-voltage-transition PWM dc-dc converter using a
      saturable core reactor Proc. of  IEEE IAS Annual Meeting, Oct. 1996.

31.  S. Yuvarajan and DaFeng Weng, "A novel soft-commuated inverter with a nonlinear-core transformer," Proc.
       of  1996 Power Systems World International Conference.

32.  DaFeng Weng and S. Yuvarajan, "A low-current-stress ZVT PWM dc-dc converter using a saturable core
       reactor," Proc. of  IEEE Power Electronics Specialists Conference, St. Louis, MO, June 1997.

33.  S. Yuvarajan and DaFeng Weng, "Input current harmonic reduction in ac-dc converters using  rectified-voltage
       PWM," Proc. of  Powersystems world International Conference, Sept. 1997.

34.  Stefan Zebunke and S. Yuvarajan, "Minimization of input current distortion in a power factor corrector using
      equal energy criterion," Proc. of Powersystems World International Conference, Sept. 1997.

35.  DaFeng Weng and S. Yuvarajan, "Resonant Boost Input Three phase Power Factor Corrector," Proc. of IEEE
       Applied Power Electronics Conference , Feb. 1998.

36.  A. Khoei and S. Yuvarajan, "Analog realization of fuzzifier and defuzzifier interfaces for fuzzy chips," Proc. of North
      American Fuzzy Information Processing Society (NAFIPS) Annual Meeting, August 1998.

37.  A. Khoei and S. Yuvarajan, "Fuzzy-logic dc motor controller with improved performance," Proc. of IEEE Industry
       Applications Society Annual Meeting, St. Louis, Missouri, October 1998.

38.  S. Yuvarajan and D. Weng, "Three-phase power factor corrector with an adjustable output voltage," Proc. of
       Power Systems World International Conference, Santa Clara, California, November 1998.

39. D. Weng and S. Yuvarajan, "Resonant-boost-input three-phase power factor corrector with a low current stress on
      switches," Proc. of IEEE Applied Power Electronics Conference, March 1999.

40. D. Weng and S. Yuvarajan, "Single-power-stage three-phase ac-dc-dc converter with power factor correction," Proc.
       of  IEEE INTELEC, Denmark, June 1999.

41.  D. Weng and S. Yuvarajan, "Resonant-boost-input three-phase power factor corrector using IGBT switches with
       ZCS switching condition." Proc. of IEEE IAS Annual Meeting, Phoenix, AZ, Oct. 1999.

42.  T. Cannon, B. Csongradi, and S. Yuvarajan, "A harmonic-modulated power factor corrector operating from 400
       Hz ac mains," Proc. of Power systems World International Conference, Chicago, IL, Nov. 1999.

43.  Rahul Patil and S. Yuvarajan, "A dc-dc converter with a variable input voltage and variable output voltage,"
       Proc of Power Systems World International Conference, Boston, Oct. 2000.

 

44. S. Yuvarajan and Dongseng Zhang, "Distortion minimization in a single-phase power factor corrector using
      a novel control circuit," Proc. of Power Systems World International Conference, Boston, Oct. 2000.

 

45. Jing He and S. Yuvarajan, "Microprocessor-based fuzzy logic control of a power factor corrector," Proc.
of Power Systems World International Conference, Boston, Oct. 2000.

 

46. Shanguang Xu and S. Yuvarajan, "An electronic load for dc power supplies," Proc. of Power Systems
      World International Conference, Boston, Oct. 2000.

 

47. Shanguang Xu and S. Yuvarajan, "Resonant-boost ac-dc-dc converter," Power Systems World Conference,
      Chicago, September 2001.

 

48. S. Yuvarajan and Shanguang Xu, "Single-stage resonant-boost ac-dc-ac inverter," Proc. IEEE Applied Power
      Electronics Conference, Dallas, TX, March 2002.

 

49. S. Yuvarajan and Shanguang Xu, “Photo-voltaic power converter with a simple Maximum Power Point
Tracker, Proc. ISCAS 2003, Bankok, Thailand, May 2003.

 

50. M. Jayachandran and S. Yuvarajan, “Thyristor-controlled Photo-voltaic power converter,” Proc. Power
      Systems World Conference, Los Angeles, CA, Nov. 2003.

 

51.  Dachuan Yu and S. Yuvarajan, “A novel circuit model for PEM fuel cells.” Proceedings of
       IEEE Applied Power Electronics Conference, Anaheim, CA, February 2004.

 

52.  S. Yuvarajan and D. Yu, “Characteristics and modeling of PEM fuel cells,” Presented at IEEE International
Symposium on Circuits and Systems, Van Couver, Canada, May 2004.

 

53. Dachuan Yu and S. Yuvarajan, “Modeling and performance studies of a fuel-cell-powered boost converter,”
Proc. of IEEE International Telecommunications Energy Conference, Chicago, Sept. 2004.

 

54. S. Yuvarajan and D. Yu, “Electronic circuit model for PEM fuel cells,” Proceedings of 
Fuel Cell Seminar, San Antonio, TX, Nov. 2004.

 

55. D. Yu and S. Yuvarajan, “Load sharing in a hybrid power system with fuel cell and PV Panel,” Proceedings of
Power Systems World Conference, Chicago, Nov. 2004.

 

56. S. Yuvarajan and Yinying Kuai, “An improved voltage-based maximum power point tracking method for
photovoltaic panels,” Proceedings of Power Systems World Conference, Baltimore, October 2005.

 

57. D. Yu and S. Yuvarajan, “Load sharing in a hybrid power system with Pv panels and a PEM fuel cell,”
 Proceedings of  IEEE Applied Power Electronics Conference, March 2006.

 

58. S. Yuvarajan and Juline Shoeb, “Lighting system with and LED string fed by PV Panel,” Proceedings of Power
 Systems World Conference, Long Beach, CA, Oct. 2006.

 

59. K. Zhou, J.G. Zhang, S. Yuvarajan, and D. Weng, “Quasi-active power factor correction circuit for HB LED
driver,” Proceedings of IEEE Applied Power Electronics Conference, Feb./March 2007.

 

60. S. Yuvarajan and Juline Shoeb, “A fast and accurate maximum power point tracker for PV systems,” Proceedings
 of IEEE Applied Power Electronics Conference , Feb. 2008.

 

61.  Lingling Fan, Zhixin Miao, S. Yuvarajan, and J. Glower, “A Comparison of Slip Control, FMAC and Vector
Control in DFIG Wind Generators,” Proceedings of IEEE Industrial Electronics Conference 2008.

 

62.  Lingling Fan and S. Yuvarajan, “Modeling and Slip Control of A Doubly Fed Induction Wind Turbine Generator,”
 Proceedings of North America Power Symposium, Calgary, Canada, Sept. 2008.

 

63.  Zhixin Miao, Lingling Fan, Dale Osborn, and Subbaraya Yuvarajan, “Control of DFIG based Wind Generation
to Improve Inter-Area Oscillation Damping”, Proceedings of IEEE PES General Meeting 2008.

 

64. C. Roshau, S. Yuvarajan, and D. Schulz, “Modeling and Hardware Implementation of VMPPT for a PV Panel 
     with a Reference Cell,” Proceedings of IEEE PVSC Conference, June 2009

65. Munir Kaderbhai and S. Yuvarajan, “Hybrid rotor injection scheme for a doubly fed induction generator,”
     Proceedings of the Symposium on Power Electronics and Machines in Wind Applications (PEMWA),
     Lincoln, Nebraska, June 2009.

66. L. Fan, Z. Miao and S. Yuvarajan, “A unified model of doubly fed induction generator for
      simulating acceleration with rotor injection and harmonics,” Proceedings of IEEE PES General Meeting, Aug. 2009.

67. S. Yuvarajan, “High efficiency dc motor drive powered by a PEM fuel cell,” Accepted for presentation at
      IEEE Vehicle Power and Propulsion Conference (VPPC), Dearborn, Michigan, September 2009.

Courses Taught

Power Electronics
Microelectronics-Devices
Electronic Circuits
Communication Circuits
Advanced Electronics
Electrical Machines
Control Systems
Electrical Circuits
Basic Digital Systems

Ph.D. Theses Supervised

1. Direct AC-AC Converter and its Applications to Variable Speed Induction Motor Drives by A. Khoei (May 1989).

2. Certain Studies on a Resonant DC Link Inverter by H. Chiou (April 1993).

3. Design of Protection and Control Strategies for Low-loss MCT Power Converters by D. Quek (July 1994).

4. Power Conversion and Control Using a Resonant DC Link by M. Chen (April 1995).

5. Development of High Input-Power-Factor Power Supplies by D. Weng ( May 1996).

6. Resonant-boost Single-stage Power Supplies by S. Xu (September 2002).

7. Power Conversion and Control Methods for Renewable Energy Sources by D. Yu (May 2005).

Book Chapters:
`MOS Controlled Thyristors (MCTs)’, Book Chapter in 'Power Electronics Handbook' by Academic Press, August 2001.

Patent:
US Patent #6239995 'Resonant-boost three-phase power factor corrector with a low current stress on switches'  (With D. Weng).

Book Review:
"Design with Operational Amplifiers and Analog Integrated Circuits" by S. Franco 4th Edition for McGraw-Hill.

 

"Power Electronics," by M. Rashid, 3rd Edition for Prentice Hall.

Grants and Contracts:

Projects Completed:
 Power factor improvement of Thyristor converters, National Science Foundation, $42,885, 1987 - '90.

 Five course improvement projects funded by NDSU Faculty Development Committee, $4,825, 1985 - '98.

 Performance evaluation and improvement of a Resonant DC link Inverter with a limited Q-factor, Air Force
 Office of Scientific Research (AFOSR), $20,000, 1993.

 Power measurement and current feedback in a Resonant DC Link Inverter, Department of Defense/EPSCoR,
  $50, 370, 1993- '94.
 
 High-performance Power Supply for The More Electric Aircraft, Department of Defense/EPSCoR, $137,168,
  1997 - 2001.

  Design and Performance Evaluation of Fuzzy-logic-based AC/DC Converters, North Dakota State EPSCoR, 

  $20.000, 1998 – 2000.

 

  A Novel Approach to Optimal Photo-voltaic Power Conversion, North Dakota State EPSCoR, $12,000,

  2002 – 2003.

Professional Development:

  Worked on an AFOSR faculty research project at Wright Patterson Air Force Base during May - Aug.,
  1992.

Professional Affiliation:

  Senior Member IEEE 

Honors and Awards:

  Government of India Technical Teacher Training Fellowship as a graduate student.

  College of Engineering "Researcher of the Year", North Dakota State University, 1993 - ‘94.