## 2006-2007 Publications and Patents

## Publications

M. Amrhein, “Induction machine performance improvements – design-oriented approaches,” UILU-ENG-2007-2503, CEME-TR-07-02, April 2007

N. D. Benavides and P. L. Chapman, “Boost converter with a reconfigurable inductor,” in 2007 IEEE Power Electronics Specialists Conference, pp. 1695-1700.

J. Byoun, “Analysis and IC implementation of digitally controlled multi-port dc-dc converters,” UILU-ENG-2007-2504, CEME-TR-07-03, March 2007.

D. Chen, “Development and fabrication of hybrid LC devices on silicon,” Technical Report UILU-ENG-2006-2513, CEME-TR-06-07, September 2006.

Y. Chen, “Dynamic modeling of multiple-input buck-boost converters,” UILU-ENG-2007-2505, CEME-TR-07-04, July 2007.

W. X. Cheng and T. J. Overbye, “An Energy Reference Bus Independent LMP Decomposition Algorithm,” IEEE Transactions on Power Systems, vol. PWRS-21, pp. 1041-1049, August 2006.

C. M. Davis, J. E. Tate, H. Okhravi, C. Grier, T. J. Overbye, and D. Nicol, “SCADA cyber security testbed development,” Proc. of 2006 North American Power Symposium, Carbondale, IL, SepDember 2006.

A. Davoudi and J. Jatskevich, “Realization of parasitics in state-space-value modeling of PWM DC-DC converters,” IEEE Trans. Power Electronics, vol. 21, no. 4, pp. 1142-1147, July 2006.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Simple method of introducing conduction losses for average modeling of switched-inductor cells,” Electronics Letters, vol. 42, no. 21, pp. 1246-1247, October 2006.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Averaged modeling of switched-inductor cells considering conduction losses in discontinuous mode,” IET Electric Power Applications, vol. 1, pp. 402-406, 2007.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Considering source dynamics in computer-aided parametric average-value modeling of PWM converters,” IEEE Computers in Power Electronics Workshop, 2006, pp. 270-274.

A. Davoudi, J. Jatskevich, and T. De Rybel, “Numerical state-space average-value modeling of PWM DC-DC converters operating in DCM and CCM,” IEEE Trans. Power Electronics, vol. 21, no. 4, pp. 1003-1012, July 2006

A. Davoudi and P. L. Chapman, “A general framework for automated physics-based reduced-order modeling of electromechanical systems,” 2007 Summer Computer Simulation Conference.

A. Davoudi and P. L. Chapman, “Eddy current modeling with order reduction in dynamic magnetic equivalent circuits,” 2007 IEEE Power Electronics Specialists Conference, pp. 2069-2074.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Computer-aided average-value modeling of fourth-order PWM dc-dc converters,” International Symposium on Circuits and Systems, 2007, pp. 793-796.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Computer-aided average value modeling of peak current-mode controlled dc-dc converters considering parasitics,” in 2007 IEEE Power Electronics Specialists Conference, pp. 2135-2139.

A. Davoudi, J. Jatskevich, and P. L. Chapman, “Parametric average-value modeling of multiple-input buck converters,” in Proceedings of the 2007 Canadian Conference on Electrical and Computer Engineering.

A. Davoudi, L.Qu, and P. L. Chapman, “Summary of recent work on reduction techniques applied to electromechanical modeling,” 2007 IEEE Electric Ship Technologies Symposium, pp. 363-370.

T. Esram, J. W. Kimball, P. T. Krein, P. L. Chapman, and P. Midya, “Dynamic maximum power point tracking of photovoltaic arrays using ripple correlation control,” IEEE Transactions on Power Electronics, vol. 21, no. 5, pp. 1282-1291, September 2006.

X. Geng, “Design and analysis of pulse-width modulation techniques for spectrum shaping,” Technical Report UILU-ENG-2007-2502, CEME-TR-07-01, February 2007.

X. Geng, “Predistorted pulse width modulation techniques for switching signal spectrum management,” in IEEE Power Electronics Specialists Conf., 2007, pp. 2869-2874.

P. M. Grant, C. Starr, and T. J. Overbye, “A power grid for the hydrogen economy,” Scientific American, vol. 295, pp. 58-65, July 2006.

S. R. Harper, D. L. Thurston, and P. T. Krein, “The effects of dynamic residential load participation: penetration levels for operational impact on reliability,” International Journal of. Critical Infrastructures, vol. 3, no. 1, pp. 221-234, 2007.

S.-J. Hong, “Development of GaN-based power electronic devices using plasma-assisted molecular beam epitaxy,” Technical Report UILU-ENG-2006-2512, CEME-TR-06-06, August 2006.

J. Jatskevich, L. Wang, N. Ozog, and A. Davoudi, “A simple explicit method of representing magnetic saturation of salient-pole synchronous machines in both rotor axes using Matlab-Simulink,” Proceedings of the 20th IEEE Canadian Conf. on Elec. Comp. Eng., in press.

J. W. Kimball and P. T. Krein, “Digital Ripple Correlation Control for Photovoltaic Applications,”IEEE Power Electronics Specialists Conf., 2007, pp. 1690-1694.

J. W. Kimball and P. T. Krein, “Singular perturbation theory for dc-dc converters and application to PFC converters,” IEEE Power Electronics Specialists Conf., 2007, pp. 882-887.

J. W. Kimball, P. T. Krein, and Y. Chen, “Hysteresis and delta modulation control of converters using sensorless current mode,” IEEE Transactions on Power Electronics, vol. 21, no. 4, pp. 1154-1158, July 2006.

P. T. Krein, “Introduction to power electronics,” Power Electronics: Devices, Circuits, and Applications Handbook, 2nd Edition, M. Rashid, Ed., Academic Press, New York, Chapter 1, 2007.

P. T. Krein, “Feasibility of geometric digital controls and augmentation for ultra-fast dc-dc converter response,” Proceedings of the IEEE Workshop on Computers in Power Electronics, 2006, pp. 48-56.

P. T. Krein, “Hybrid and electric automotive systems: Combined electrical, mechanical, and fuel cell opportunities for personal transportation,” Proceedings of the. 2nd International. Conf. on Power Electronic Systems and Applications, 2006.

A. Kwasinski, and P. T. Krein, “Multiple-input dc-dc converters to enhance local availability in grids using distributed generation resources,” Proc. IEEE Applied Power Electronics Conf., 2007, pp. 1657-1663.

A. Kwasinski and P. T. Krein, “Optimal configuration analysis of a microgrid-based telecom power system,” in Proceedings of. IEEE International Telecommunications Energy Conference, Sept. 2006, pp. 602-609.

A. Kwasinski and P. T. Krein, “Passivity-based control of buck converters with constant-power loads,” Proc. IEEE Power Electronics Specialists Conference, 2007, pp. 259-265.

A. Kwasinski, W.W. Weaver, P. T. Krein, and P.L. Chapman, “Hurricane Katrina: Damage assessment of power infrastructure for distribution, telecommunication, and backup,” Technical Report UILU-ENG-2006-2511, CEME-TR-06-05, August 2006.

A. Kwasinki, W.W. Weaver, P.L. Chapman, and P. T. Krein, “Telecommunications power plant damage assessment caused by Hurricane Katrina – Site survey and follow-up results,” Proceedings of 2006 IEEE International Telecommunications Energy Conference, pp. 388–395.

J. Jatskevich, L. Wang, N. Ozog, and A. Davoudi, “A simple explicit method of representing magnetic saturation of salient-pole synchronous machines in both rotor axes using Matlab-Simulink,” Proceedings of the 20th Canadian Conference on Electrical and Computer Engineering, in press.

D.J. Maggio, T. J. Overbye, and M. Liu, “Transmission corridor analysis using PTDFs” presented at 2006 NAPS, Carbondale, IL, Sept.17-19, 2006.

T.C. O’Connell and P. T. Krein,, “A preliminary investigation of computer-aided Schwarz-Christoffel transformations for electric machine design and analysis,” Proceedings of the 10th IEEE Workshop on Computers in Power Electronics, 2006, pp. 166-172.

T.C. O’Connell and P. T. Krein, “The Schwarz-Christoffel analytical method applied to electric machine slot shape optimization,” Proceedings of the IEEE International Electric Machines and Drives Conference 2007, Antalya, Turkey, May 3-5, 2007, pp. 341-346.

G. E. Pitel and P. T. Krein, “Transient reduction of dc-dc converters via augmentation and geometric control,” Proc. 2007 IEEE Power Electronics Specialists Conf., pp. 1652-1657

G. E. Pitel and P. T. Krein, “Trajectory paths for dc-dc converters and limits to performance,” Proc. IEEE Workshop on Computers in Power Electronics, 2006, pp. 40-47.

J. S. Popovics, G. Gallo, M.D. Shelton, and P.L. Chapman, “A magnetic sensing approach to characterize corrosion in reinforced concrete,” SPIE Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring, 2007, in press.

L. Qu and P. L. Chapman, “Extraction of dynamic, low-order models for magnetic devices based on finite element analysis with hysteresis,” 2007 IEEE Power Electronics Specialists Conference, pp. 2082-2088.

L. Qu and P. L. Chapman, “Toward a system for automatic extraction of low-order models for magnetic devices,” 2006 Proc. IEEE Workshop on Computers in Power Electronic.

B. C. Raczkowski and P. W. Sauer, “Review of Wind Energy Conversion Systems,” Proc. 2006 Electrical Manufacturing Technical Conference, Indianapolis, IN, pp. 1-8.

P. A. Ruiz and P. W. Sauer, “Reactive Power Reserve Issues,” Proc. 2006 North American Power Symposium, Southern Illinois University, Carbondale, IL, pp. 539-545.

A. Rudkevich, K. Egilmez, L. Minghai, P. Murti, V. Poonsaeng, R. Tabors, and T. J. Overbye, “Identification and congestion analysis of transmission corridors of the Eastern Interconnection,” Proc. 40th Hawaii International Conference on System Sciences, Waikoloa, HI, January 2007.

P. W. Sauer and M.A. Pai, “Relationships between power system dynamic equilibrium, load flow, and operating point stability,” in Real-Time Stability in Power Systems, S. C. Savulescu, Ed. New York: Springer, 2006, pp. 1-30.

D. O. Savageau and T. J. Overbye, “Adaptive influence distance algorithm for contouring bus-based power system data,” Proc. 40th Hawaii International Conference on System Sciences, Kona, HI, January 2007.

J. D. Smith and P. W. Sauer, “Algorithm to Determine Minimum Contingency Set in Voltage Collapse Scenario,” Proc. 2006 North American Power Symposium, Southern Illinois University, Carbondale, IL, pp. 619-624.

Z. Sorchini, “A framework for the analysis and design of vector controllers for induction machines,” Technical Report UILU-ENG-2006-2517, CEME-TR-06-08, August 2006.

Z. Sorchini and P. T. Krein, “An overview of induction motor control,” Proceedings of the 3rd International AUS Symposium on Mechatronics, 2006.

Z. Sorchini and P. T. Krein, “Formal derivation of direct torque control for induction machines,” IEEE Transactions on Power Electronics, Vol. 21, no. 5, pp. 1428–1436, September 2006.

W. W. Weaver and P. T. Krein, “Analysis and applications of a current-sourced buck converter,” Proceedings of the IEEE Applied Power Electronics Conf., 2007.

W. W. Weaver and P. T. Krein, “Implementing power buffer functionality in a dc-dc converter by geometric control,” Record of IEEE Industry Applications Society Annual Meeting, 2006, pp. 2529-2536.

W. W. Weaver and P. T. Krein, “Mitigation of voltage collapse through active dynamic buffers,” International. Journal of. Critical Infrastructures, vol. 3, no. 1, pp. 101-123, 2007.

J. R. Wells, X. Geng, P. L. Chapman, P. T. Krein, and B. M. Nee, “Modulation-based harmonic elimination,” IEEE Transactions on Power Electronics, vol. 22, no. 1, pp. 336-339, January 2007.

G. Zhang, “Torque-angle based analysis and control of induction machines,” Technical Report UILU-ENG-2006-2518, CEME-TR-06-09, August 2006.

Y. Zhang and L. Xu, “Application of dual mechanical port machine in hybrid electrical vehicles,” IEEE Vehicle Power and Propulsion Conference, Windsor, Sept. 6-8, 2006, England, UK.

K. Zheng, “Steady-state bumpless transfer under controller uncertainty: Methodology and applications,” Technical Report UILU-ENG-2006-2519, CEME-TR-06-10, November 2006.

K. Zheng, A.-H. Lee, J. Bentsman, and P. T. Krein, “High performance robust linear controller synthesis for an induction motor using a multi-objective hybrid control strategy,” Nonlinear Analysis: Hybrid Systems and Applications, vol. 65:11, pp. 2061-2081, December 2006.

## Patents

P. Chapman, P. Krein, J. Kimball, and T. Flowers, “Method and apparatus for starting power converters,” U. S. Patent 7,078,883, July 2006.

R. S. Balog and P. T. Krein, “Commutation Technique for an ac-to-ac converter based on state machine control,” U.S. Patent 7,187,149, March 2007.