Dr Ojo

Joseph Olorunfemi Ojo
Professor
Ph.D., Electrical and Computer Engineering

E-Mail: This e-mail address is being protected from spambots, you need JavaScript enabled to view it Education: 1987, Ph.D., Electrical Engineering, University of Wisconsin, Madison 1980, M.Eng., Electrical Power, Ahmadu Bello University , Nigeria 1977, B.Eng., Electrical Engineering, Ahmadu Bello University, Nigeria Academic Experience: 1988-Present, Professor, Tennessee Technological University, Cookeville 1987-1988, Research Associate, Department of Electrical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 1982-1987, Teaching and Research Assistant, Department of Electrical Engineering, University of Wisconsin-Madison, Madison, Wisconsin 1978-1982, Lecturer, Department of Electrical Engineering, Ahmadu Bello University, Zaria, Nigeria	Credentials Awards Research Bibliography Teaching E-Publications Student Theses Older PhotoGalleries New Photo Galleries
	Recent Awards: 1995: IEEE Industry Application Society Paper Award 1996: Sigma XI Research Award 2001: Kinslow Award Society Memberships: Senior Member, Institute of Electrical and Electronic Engineers (IEEE) Associate Editor IEEE Transactions on Power Electronics
Research Interests: - Electric Machine Analysis and Design - Adjustable-Speed Motor Drives - Power Electronic Converters - Control Theory applied to Power Electronics and Power Systems - Power Systems Economics and Deregulation issues.
Recent Publications Journal Gan Dong and Olorunfemi Ojo, “Current Regulation in Four-Leg Voltage Source Converters,” To appear in the IEEE Transactions on Industrial Electronics, 2007 Gan Dong and Olorunfemi Ojo, “Efficiency Optimizing Control of Induction Motor Using Natural Variables,” IEEE Transactions on Industrial Electronics, pp. 1791-1798, Vol. 53, No. 6, December 2006. Emeka Obe, Tomonobu Senjyu, Marcel Agu, Linus Anih and Olorunfemi Ojo, “Analysis of the Steady-State Components in a Balanced Single-Phase Synchronous Reluctance Motor with a Running Capacitor,” Electric Power System Research, Vol. 77, pp. 295 – 302, 2007. Jyoti Sastry, Olorunfemi Ojo and Zhiqiao Wu, “ High Performance Control of a Boost AC- DC PWM/Rectifier/Induction Generator System,” IEEE Transactions on Industry Applications, pp. 1146-1154, Vol. 42, No. 5, September 2006. Zhiqiao Wu and Olorunfemi Ojo, “ Coupled-Circuit Model Simulation and Airgap-field Calculation of a Dual Stator Winding Induction Machine,” IEE Proceedings, part B – Electric Power and Applications, pp. 387 – 400, Vol. 153, No. 3, May 2006. Emeka Obe and Olorunfemi Ojo, Line-Start Performance of Single-Phase Synchronous Reluctance Motor with Controlled Capacitor,” IEE Proceedings – Electrical Power and Applications, pp. 967 – 976, Vol. 152, No. 4, July 2005. Olorunfemi Ojo, Zhiqiao Wu and Gan Dong, “High Performance Speed-Sensorless Control of an Induction Motor Drive Using a Minimalist Single-Phase PWM converter,” IEEE Transactions on Industry Applications, Vol. 41, No. 4, pp. 996-1004 July/August 2005. Olorunfemi Ojo, Sheetal Asuri, Gan Dong and Z. Wu, “Control of Induction Motor Drive Fed with a Single-Phase Sparse PWM Rectifier-Inverter,” IEE Proceedings – Electrical Power and Applications, Vol. 152, No. 3, pp. 526 – 534, May 2005. Olorunfemi Ojo and P. Khirsagar, “Concise Modulation Strategies for Four-Leg Voltage Source Inverters,” IEEE Trans. on Power Electronics, Vol. 19, No. 1, pp. 46-53, 2004. Olorunfemi Ojo, “The Generalized Discontinuous PWM Modulation Scheme for Three-Phase Voltage Source Inverters,” Trans. on Industrial Electronics, Vol. 51, No. 6, pp. 1280-1289, December 2004. Olorunfemi Ojo and P. Khirsagar, “Concise Modulation Strategies for Four-Leg Voltage Source Inverters,” IEEE Trans. on Power Electronics, Vol. 19, no. 1, pp. 46-53, 2004. Olorunfemi Ojo and Gan Dong, “ Analysis of a Synchronous Reluctance Machine with an Auxiliary Single-Phase Winding,” IEEE Trans. on Industry Applications Society, vol. 39, no. 5, pp. 1307- 1313, September/October 2003. Olorunfemi Ojo and I. E. Davidson, "PWM-VSI assisted stand-alone dual stator winding induction generator, " IEEE Trans. on Industry Applications, Vol. 36, No. 6, pp. 1604-1611, November-December 2000. Olorunfemi Ojo, The Generalized Discontinuous PWM Modulation Scheme for Three-Phase Voltage Source Inverters, To appear in the IEEE Trans. on Industrial Electronics. Olorunfemi Ojo, Sheetal Asuri, “ Control of Induction Motor Drive Fed with a Single-Phase Sparse PWM Rectifier-Inverter,” To appear in the IEE Proceedings (U.K). Olorunfemi Ojo and I. E. Davidson, "PWM-VSI Assisted Stand-alone Dual Stator Winding Induction Generator, " IEEE Trans. on Industry Applications, vol. 36, no. 6, pp. 1604- 1611, November-December 2000. Olorunfemi Ojo, Obasohan Omozusi and A. A. Jimoh, "The Operation of an Inverter-Assisted Single-Phase Induction Generator, IEEE Trans. on Industrial Electronics, vol. 47, no. 3, pp. 632-640, June 2000. Olorunfemi Ojo, Obasohan Omozusi, A. Ginart and B. Gonoh, " The Operation of a Stand-Alone, Single-Phase Industion Generator Using a Single-Phase, Pulse-Width Modulated Inverter with a Battery Supply, " IEEE Trans. on Energy Conversion, vol. 14, no. 3, pp. 526-531, September 1999. Olorunfemi Ojo and Z. Wu, A Synchronous Operation of a Dual-winding Reluctance Generator, accepted for Publication, IEEE Trans. On Energy Conversion, Vol. 12, No. 4, pp. 357-362, December 1997. Olorunfemi Ojo, J. Cox and Wu, Z., "A DC Power Generation using Interior Permanent-Magnet Machines," IEEE Trans. on Energy Conversion, Vol. 12, No. 4, pp. 351-356, December 1997. Olorunfemi Ojo, "Performance of Self-Excited Single-Phase Induction Generators with Shunt, Short-Shunt and Long-Shunt Excitation Connection," IEEE Trans. On Energy Conversion, Vol. 11, No. 3, pp. 477-482, September 1996. Olorunfemi Ojo, "Minimum Airgap Flux Linkage Requirement for Self-excitation in Stand-alone Induction Generators,'' IEEE Trans. on Energy Conversion, Vol. 10, No. 3, pp. 484-497, September 1995. Olorunfemi Ojo, "The Transient and Qualitative Performance of a Self-excited Single-phase Induction Generator,'' IEEE Trans. on Energy Conversion, Vol. 10, No. 3, pp. 493-501, September 1995. Olorunfemi Ojo, "Robust Control of Series Parallel Resonant Converters,'' IEE Proceedings, Control Theory and Applications, Vol. 142, No. 5, pp. 401-410, September 1995. Olorunfemi Ojo, "Dynamics and System Bifurcation in Autonomous Generators," IEEE Trans. on Industry Applications, Vol. 31, No. 4, pp. 918-924, July/August 1995. Olorunfemi Ojo and I. Bhat, "An Analysis of Single-phase Self-excited Induction Generators: Model Development and Steady-state Analysis,'' IEEE Trans. on Energy Conversion, vol. 10, No. 2, pp. 254-260, June 1995. Olorunfemi Ojo, S. Venkataswamy and I. Bhat, "Performance Prediction of Third-order Series Resonant Converter,'' IEE Proceedings, Part B, vol. 142, No. 1, pp. 29-34, January 1995. Conferences Olorunfemi Ojo and Innocent Davidson, A. A. Jimoh , "Model for the Analysis and Control of Induction Motor Drives Fed with AC/AC Converters," Conference Record of the 2000 IEEE - Industry Applications Society, pp. 2224-2230, October 2000. Olorunfemi Ojo and Innocent Davidson , "Dual stator winding induction generator with a four-switch inverter-battery scheme for control," Conference Proceedings of the 2000 IEEE 31st annual power electronics specialists conference, pp. 230-234, Galway, Ireland, June 18- 23th 2000. Olorunfemi Ojo, Sanbao Zheng and Abdolreza Sheikhol-Eslami , " Operation of a center- node unified power flow controller in transmission applications," North American power conference, November 2000 Olorunfemi Ojo and Abdolreza Sheikhol-Eslami , "Universal power conditioners for distributed regulated power systems environment," 4th International Conference on power system operation and planning (ICPSOP'2000), pp. Accra, Ghana, July 31st-August 3, 2000 Olorunfemi Ojo, Field Orientation control of a doubly-fed synchronous reluctance machine," Record of the 29th Annual IEEE Power Specialists Conference, pp. 1276-1282, May 1998.
Teaching: I have taught undergraduate courses in Electromechanical Devices, Power Systems Analysis, and Power Electronics. During the last ten years, I have taught graduate courses in Advanced Electric Machines, Power System Dynamics, Power Electronics Applications in Power Systems, Adjustable-speed Motor Drives and Power Electronics. Course Taught at TTU: Undergraduate: Electrical Energy Systems Electromechanical Energy Conversion Power System Analysis Fundamentals of Electrical Engineering Power Electronics Graduate: Advanced Electric Machinery Design and Control of Power Electronics Systems Adjustable-Speed Motor Drives Design and Finite Element Analysis of Electric Machinery Nonlinear Dynamics and Bifurcations of Electric Power Systems Laboratory Development: Involved with the development of the Electric Machine and Power Electronics Laboratory at Tennessee Technological University

Publications:

IE Conference 2003 THE GENERALIZED DISCONTINUOUS PWM MODULATION SCHEME FOR THREE-PHASE VOLTAGE SOURCE INVERTERS
PES 2003 A NEW CARRIER-BASED DISCONTINUOUS PWM MODULATION METHODOLOGY FOR FOUR-LEG VOLTAGE SOURCE INVERTERS
PESC CONCISE MODULATION STRATEGIES FOR FOUR-LEG VOLTAGE SOURCE INVERTERS

Student Theses and Dissertations

- Zhiqiao Wu, AN INVESTIGATION OF DUAL STATOR WINDING INDUCTION MACHINES

- Obasohan I. Omozusi, DYNAMICS AND CONTROL OF A BATTERY INVERTER SINGLE-PHASE INDUCTION GENERATOR SYSTEM

- Zhiqing Wu, MODELING, SIMULATION, AND APPLICATION OF A DOUBLY-FED RELUCTANCE
ELECTRICAL MACHINE

- Sravan Kumar Vanaparthy, PWM SCHEMES FOR THREE PHASE CURRENT SOURCE CONVERTERS

- Srikanth Konduru, MODELING AND CONTROL OF A THREE-PHASE THREE-LEVEL DIODE CLAMPED CONVERTER
-Abstract , Introduction , chapter_2 , chapter_3 , chapter_4 ,chapter_5 , chapter_6 ,chapter_7 , chapter_8 ,chapter_9 , chapter_10 ,chapter_11 , References

- Olufemi Osaloni, PERFORMANCE ANALYSIS AND NONLINEAR FEEDBACK CONTROL OF INTERIOR PERMANENT MAGNET SYNCHRONOUS MOTOR

- Parag. M. Kshirsagar, PWM STRATEGIES IN POWER CONVERTERS
- Abstract , Chapt. 1 , Chapt. 2 , Chapt. 3 , Chapt. 4 , Chapt. 5 , Chapt. 6 , Chapt. 7 , Chapt. 8 , Chapt. 9 , References

- Sheetal K. Asuri, MODELLING AND CONTROL OF SPARSE CONVERTER FED INDUCTION MOTOR DRIVES
- Abstract , Chapter 1, Chapter 2, Chapter 3, Chapter 4, Chapter 5, Chapter 6, Chapter 7, Chapter 8, references.

- Jyoti Sastry, ANALYSIS AND CONTROL OF AN AC/DC PWM RECTIFIER ASSISTED INDUCTION GENERATOR

- Gan Dong, SENSORLESS AND EFFICIENCY OPTIMIZED INDUCTION MACHINE CONTROL WITH ASSOCIATED CONVERTER PWM MODULATION SCHEMES

- John D. Cox, ANALYSIS OF AN INTERIOR PERMANENT MAGNET MACHINE OPERATING IN GENERATOR MODE: abstract, title, toc, lof, Ch 1, Ch 2, Ch 3, Ch 4, Ch 5, Ch 6, Ch 7, Ch 8, REF and VITA