You are here

Publications

Journal papers

 

  • X. Sun, M. Cheng, Y. Zhu and L. Xu, "Application of Electrical Transmission in Wind Power Generation System," IEEE Transactions on Industray Applications, Vol. 49, No. 3, pp. 1299-1307, MAY/JUN, 2013.
  • L. Xu, E. Inoa, Y. Liu and B. Guan, "A New High-Frequency Injection Method for Sensorless Control of Doubly Fed Induction Machines," IEEE Transactions on Industry Applications, Vol. 48, No. 5, pp. 1556-1564, SEP/OCT, 2012.
  • H. Liu, L. Xu, M. Shangguan and W. Fu, "Finite Element Analysis of 1MW High Speed Wound-Rotor Synchronous Machine," IEEE Transactions on Magnetics, Vol. 48, No. 1, pp. 4650-4653, NOV. 2012.
  • J. Zhang, L. Xu, M. Guven, S. Chi and M. Illindala, "Experimental Verifcation of Deep Field Weakening Operation of a 50-kW IPM Machine by Using Single Current Regulator," Vol. 47, No. 1, pp. 128-133, JAN/FEB, 2011.
  • H. Rehman and L. Xu, "Alternative Energy Vehicle Drive System: Control, Flux and Torque Estimation, and Efficiency Optimization," IEEE Transactions on Vehicular Technology, Vol. 60, No. 8, pp. 3625-3634, OCT., 2011.
  • J. Du, D. Liang, L. Xu and Q. Li, "Modeling of a Linear Switched Reluctance Machine and Drive for Wave Energy Conversion Using Matrix and Tensor Approach," IEEE Transactions on Magnetics, Vol. 46, No. 6, pp. 1334-1337, JUN., 2010.
  • S. Chi, Z. Zhang and L. Xu, "Sliding-Mode Sensorless Control of Direct-Drive PM Motors for Washing Machine Applications," IEEE Transactions on Industry Applications, Vol. 45, No. 2, pp. 582 - 590, MAR/APR, 2009.
  • L. Xu, J. Zhang and X. Wen, "Multioperational Modes and Control Strategies of Dual-Mechanical Machine for Hybrid Electric Vehicles," IEEE Transactions on Industry Applications, Vol. 45, No. 2, pp. 747 - 755, MAR/APR, 2009. 
  • X. Sun, M. Cheng, H. Wei and L. Xu, "Optimal Design of Double-Layer Permanent Magnet Dual Mechanical Machine for Winding Power Generation," IEEE Transactions on Magnetics, Vol. 45, No. 10, pp. 4613 - 4616, OCT., 2009.
  • L. Xu, "Dual Mechanical Port Machines - Concept and Application of a New Electric Machine to Hybrid Electric Vehicles," IEEE Industry Application Magazine, Vol. 15, No. 4, pp. 44-51, JUL/AUG, 2009.
  • J. Hu, J. Liu and L. Xu, "Eddy Current Effects on Rotor Position Estimation and Magnetic Pole Identification of PMSM at Zero and Low Speeds," IEEE Transactions on Power Electronics, Vol. 23, No. 5, pp. 2565 - 2575, SEPT. 2008.
  • M. Comanescu, L. Xu, "Sliding-mode MRAS speed estimators for sensorless vector control of induction Machine", IEEE Transactions on Industrial Electronics, Vol. 53, No. 1, pp. 146-153, 2005.
  • M. Comanescu, L. Xu, "An improved flux observer based on PLL frequency estimator for sensorless vector control of induction motors", IEEE Transactions on Industrial Electronics, Dec 2005, Vol. 53, Issue 1, pp. 50-56J. Li, L. Xu and Z. Zhang, "An adaptive sliding-mode observer for induction motor sensorless speed control", IEEE Transactions on Energy Conversion, July-Aug 2005, Vol. 41, Issue4, pp. 1039-1046
  • Chuanyang Wang, Longya Xu, “A novel approach for sensorless control of PM machines down to zero speed without signal injection or special PWM technique” IEEE Transactions on Power Electronics June, 2004L. Xu, W. Fu, “Evaluation of Third Harmonics Effects in Five-Phase Synchronous Reluctance Motor Drive Using Time-Stepping Finite Element Method”, IEEE Transactions on Industry Applications, May/June 2002, Vol. 38, No. 3, pp. 638-644
  • X. Wang, S. Chen, W. Wang, Y. Sun and L. Xu, “Transient Model for Induction Machines with Stator Winding Turn Faults,” IEEE Transactions on Industry Applications”, May/June 2002, Vol. 38, No. 3, pp. 625-631
  • L. Xu and C. Wang, Accurate Rotor Position Detection and Sensorless Control of SRM for Super-High Speed Operation,” IEEE Transactions on Power Electronics, Sept. 2002, Vol, 17, No. 5, pp. 757-763
  • F. Wang, F. Zhang, and L. Xu, “Parameter and Performance Comparison of Doubly-Fed Brushless Machine with Cage and Reluctance Rotors”, IEEE Transactions on Industry Applications”, Sept/Oct. 2002, Vol. 38, No. 5, pp. 1237-1243
  • A. Derdiyok H. Rehman, Mustafa K. Guven N. Inane and L. Xu, “Design and Implementation of a New Sliding-Mode Observer for Speed Sensorless Control of Induction Machine”, IEEE Transactions on Industrial Electronics, Oct. 2002, Vol. 49, No. 5, pp.1177-1182
  • H. Rehman, A. Derdiyok, Mustafa K. Guven and L. Xu, “ A New Current Model Flux Observer for Wide Speed Range Sensorless Control of an Induction Machine,” IEEE Transactions on Power Electronics, Nov. 2002, Vol. 17, No. 6, pp1041-1049
  • J. Bu and L. Xu, “Eliminating Starting Hesitation for Reliable Sensorless Control of Switched Reluctance Motors”, Presented at IEEE-IAS Annual Meeting 1998 and Scheduled for Publications on IEEE Transactions on Industry Applications, 2000
  • J. Chen, C. Nayar and L. Xu, “Design and FE analysis of an outer-rotor PM generator for directly coupled wind turbine applications,” Scheduled on IEEE Transactions on Magnetics July 2000, Vol. 36, No. 04
  • L. Xu, “Rotor Structure Selections of Nonsine Five-Phase Synchronous Reluctance Machines for Improved Torque Capability”, IEEE Transactions on Industry Applications, Vol. 36, No. 1, July/Aug. 2000, pp. 1111-1118
  • L. Xu and M. Fu, “Computer Modeling of Interactions of an Electric Motor, Circulatory System and Rotary Blood Pump,” American Society for Artificial Internal Organs, ASAIO Journal, vol. 46

  • M. Fu* and L. Xu, "Computer simulation of sensorless fuzzy control of a rotary blood pump to assure normal physiology," American Society for Artificial Internal Organs, ASAIO Journal, vol. 46, no 3, 2000 pp.273-278.

  • L. Zhu, K. Vafai and L. Xu, “A thermal-electrical study of the device temperature and heat generation in power MOSFETs and their effects on the device electrical performance,” AIAA Journal of Thermophysics and Heat Transfer, Vol. 13, No. 2, April-June1999.? pp. 185-194.

  • L. Zhu, K.Vafai, and L.Xu, "Modeling of non-uniform Heat Dissipation and Prediction of Hot Spots in Power Transistors", International Journal Heat and Mass Transfer, Vol. 41, No. 15, 1998, pp.2399-2407.

  • L. Zhen*, and L. Xu, “Sensorless Field Orientation Control of Induction Machines based on a Mutual MRAS Scheme.,” IEEE Transactions on Industrial Electronics, Vol. 5, No. 5, Oct. 1998, pp. 824-831.

  • L. Zhen, and L. Xu, "On-Line Fuzzy Tuning of Indirect Field-Oriented Induction Machine Drives", IEEE Transactions on Power Electronics, Vol.13, No. 1, Jan/Feb., 1998, pp.134-141.

  • L. Xu, L. Zhen, and E. Kim, "Field-Orientation Control of a Doubly Excited Brushless Reluctance machine", IEEE Transactions on Industry Applications, Vol. 34, No. 1, Jan/Feb. 1998, pp. 148-155.

  • L. Xu, F. Wang, M. Fu, A. Medvedev, W. Smith, and L. Golding, "High efficiency Motor design for blood pump," American Society for Artificial Internal Organs, ASAIO Journal, Vol. 43, no. 5, Sept./Oct. 1997. pp. 615-619.

  • M. Fu, L. Xu, A. Medvedev, W. Smith, and L. Golding, "DSP controller design and development for Innovative Ventricular Assist System (IVAS)," American Society for Artificial Internal Organs ASAIO Journal, Vol.43, no. 5, Sept./Oct. 1997. pp. 559-564.

  • L. Xu, Z. Zhao and J. Jiang,"On-line Estimation of Variable Parameters of Synchronous Machines Using a Novel Adaptive Algorithm--Estimation and Experimental Verification", IEEE Transactions on Energy Conversion, Vol. 12, No.3, September, 1997, PP. 200-210.

  • Z. Zhao, L. Xu and J. Jiang, "On-line Estimation of Variable Parameters of Synchronous Machines Using a Novel Adaptive Algorithm--Principles and Procedures", IEEE Transactions on Energy Conversion, Vol. 12, No.3, September, 1997, PP. 193-199.

  • B. Heber, L. Xu? and Y. Tang, "Fuzzy Logic Enhanced Speed Control of an Indirect Field-Oriented Induction machine Drive", IEEE Transactions on Power Electronics, Vol.12, No. 5, Sept/Oct., 1997, pp.772-778.

  • L. Xu, F. Liao and L. Zhen, "Design of the Doubly-Fed Reluctance Motor for Adjustable Speed Drives," IEEE Transactions on Industry Application, Vol.32, No.5,Sept/Oct. 1996, pp. 1195-1203.

  • L. Xu and Eric Ruckstadter, "Direct Modeling of Switched Reluctance Machine by Coupled Field-Circuit Method", IEEE Transactions on Energy Conversion, Vol. 10, No. 3, Septtember,1995, pp.446-454.

  • Z. Zhao and L. Xu, "A Dynamic On-Line Parameter Identification and Full-Scale System Experimental Verification for Large Synchronous Machines", IEEE Transactions on Energy Conversion, Vol. 10, No.3, September, 1995, pp. 392-398.

  • L. Xu and Y. Tang, "Vector Control and Fuzzy Logic Control of Doubly Fed Variable Speed Drives with DSP Implementation", IEEE Transactions on Energy Conversion, Vol.10, No.4, December,1995, pp.661-668.

  • Y. Tang and L. Xu, "A Flexible Active and Reactive Power Control Strategy for a Variable Speed Constant Frequency Generating System", IEEE Transactions on Power Electronics, Vol.10, No. 4, July/Aug., 1995, pp.472-478.

  • L. Xu and W. Cheng, "Torque and Reactive Power Control of a Doubly-Fed Induction Machine by Position Sensorless Scheme" IEEE Transactions on Industry Applications, Vol. 31, No. 3, May/June 1995, pp. 636-642.

  • L. Xu and L. Ye, "Analysis of a Novel Stator Winding Structure Minimizing harmonic Current and Torque Ripple for Dual Six-Step Converter-Fed High Power AC Machines ", IEEE Transactions on Industry Applications, Vol. 31, No. 1, Jan/Feb. 1995, pp. 84-90.

  • L. Xu, L. Ye, L. Zhen and A. El-Antably, "A New Design Concept of Permanent Machine for Flux Weakening Operation," IEEE Transactions on Industry Applications, Vol. 31, No. 2, Mar/April 1995, pp. 373-379.

  • L. Xu and L. Ye, "Analysis of a Novel Stator Winding Structure Minimizing harmonic Current and Torque Ripple for Dual Six-Step Converter-Fed High Power AC Machines," IEEE Transactions on Industry Applications, Vol. 31, No. 1, Jan/Feb. 1995, pp. 84-90.

  • L. Xu and W. Cheng, "Torque and Reactive Power Control of a Doubly-Fed Induction Machine by Position Sensorless Scheme," IEEE Transactions on Industry Applications, Vol. 31, No. 3, May/June 1995, pp. 636-642.

  • L. Xu and Y. Tang, "Vector Control and Fuzzy Logic Control of Doubly Fed Variable Speed Drives with DSP Implementation", IEEE Transactions on Energy Conversion, Vol.10, No.4, December, 1995, pp.661-668.

  • L. Xu, Y. Tang and L. Ye*, "Comparison Study of Rotor Structures of Doubly-Excited Brushless Reluctance Machine by Finite Element Analysis," IEEE Transactions on Energy Conversion, Vol. 9, No. 1, March 1994, pp. 165-172.

  • Tumageanian, A. Keyhani, S. Moon, T. Leksan and L. Xu, "Maximum Likelihood Estimation of Synchronous Machine Parameters from Flux Decay Data," IEEE Transactions on Industry Application, Vol. 30, No. 2, March/April 1993, pp. 433-440.

  • Y. Tang and L. Xu, "Fuzzy Logic Application for Intelligent Control of a Variable Speed Drive," IEEE Transactions on Energy Conversion, Vol. 9, No. 4, Dec. 1994, pp. 679-686.

  • L. Xu and J. Yao, "A Compensated Vector Control Scheme of a Synchronous Reluctance Motor Including Saturation and Iron Losses," IEEE Transactions on Industry Applications, Vol. 28, No. 6, Dec. 1992, pp. 1330-1336.

  • L. Xu, "Dynamic Model of an Integral-Cycle Controlled Induction Machine," IEEE Transactions on Energy Conversion, Vol. 7, No. 4, Dec. 1992, pp. 761-767.

  • H. Toliyat, L. Xu, and T. Lipo, "A Five Phase Reluctance Motor with High Specific Torque," IEEE Trans. on Industry Applications, Vol. 28, No. 3, May/June 1992, pp. 659-667.

  • F. Liang, L. Xu,? and T. Lipo, "Analysis of a New Variable Speed Doubly Excited Reluctance Motor", Electric Machines and Power System, Vol. 19. No. 2, March 1991, pp. 125-138.

  • L. Xu, X. Xu, T. Lipo and D. Novotny, "Vector Control of Synchronous Reluctance Machine Including Saturation and Iron Loss," IEEE Trans. on Industry Applications, Vol. 27, No. 5, Sept./Oct. 1991, pp. 997-985,

  • L. Xu, F. Liang, and T. Lipo, "Transient Model of the Doubly Fed Reluctance Motor", IEEE Transaction on Energy Conversion, Vol. 6, No. 1, March 1991, pp. 126-133.

  • L. Xu, T. A. Lipo, and S. Rao, "Analysis of a Variable Speed Singly-salient Reluctance Motor Utilizing Only Two Transistor Switches", IEEE/IAS Transaction, Feb/March, 1990, pp. 229-236.

Conference papers

  • K. Tsai, F. Qi, E. Davidson and L. Xu, "Common Noise EMI Characterization and Improvement for GaN Switched-Capacitor Converter," IEEE Energy Conversion Congress and Exposition, pp. 4159-4165, Denver, CO, 2013.

  • D. Hu, F. Guo and L. Xu, "Hardware-in-the-loop Verification of a Smooth Transition Algorithm between Maximum Torque per Ampere Control and Single Current Regulator," IEEE Energy Conversion Congress and Exposition, pp. 1765-1769, Denver, CO, 2013.

  • Y. Alsmadi, V. Utkin and L. Xu, "Sliding Mode Control of AC/DC Power Converters," 4th International Conference on Power Engineering, Energy and Electric Drives, pp. 1229-1234, Turkey, 2013.

  • D. Hu, L. Zhu and L. Xu, "Maximum Torque per Volt Operation and Stability Improvement of PMSM in Deep Flux-Weakening Region," IEEE Energy Conversion Congress and Exposition, pp. 1233-1237, Raleigh, NC, 2012.

  • T. Fan, Q. Li, X, Wen and L. Xu, "Design Space Methodology and its Application in Interior Permanent Magnet Synchronous Motor Design," International Conference on Electrical Machines and Systems, China, 2011.

  • H. Liu and L. Xu, "Performance Analysis of a Doubly Excited Brushless Machine for Variable Speed Application," International Conference on Electrical Machines and Systems, China, 2011.

  • H. Liu, L Xu and M. Shangguan, "Finite Element Method Simulation of a High Speed Wound-Rotor Synchronous Machine," International Conference on Electrical Machines and Systems, China, 2011.

  • E. Batarseh, L. Xu, Z. Slameh, M. Abdel-Salam, C. Guy and A. Perez-Neira, "Keynote speech 1: Advanced Solar Energy Conversion Technologies to Enable Smart-Grid Deployment," IEEE Jordan Conference on Applied Electrical Engineering and Computing Technologies, Jordan, 2011

  • L. Xu, E. Inoa, Y. Liu and B. Guan, "A New High Frequency Injection Method for Sensorless Control of Doubly-Fed Induction Machines," IEEE Energy Conversion Congress and Exposition, pp. 1758 - 1764, Phoenix, AZ, 2011. 

  • L. Xu, Y. Liu and X. Wen, "Comparison Study of Singly-Fed Electric Machine with Doubly-Fed Machine for EV/HEV Applications," IEEE International Conference on Electrical Machines and Systems, China, 2011.

  • X. Wen, F. Zhao, X. Guo, T. Fan, L. Xu and Q. Ge, "Application of PM Type DMPM in Hybrid Electric Vehicle," IEEE Energy Conversion Congress and Exposition, pp. 3340 - 3344, Atlanta, GA, 2010. 

  • X. Sun, M. Cheng, H. Wei and L. Xu, "Application of Electrical Variable Transmission in Wind Power Generation System," IEEE Energy Conversion Congress and Exposition, pp. 1529 - 1536, Atlanta, GA, 2010. 

  • Z. Zhang, L. Xu, J. Zhang and B. Guan, "Novel Rotor-Side Control Scheme for Double Fed Induction Generator to Ride Through Grid Faults," IEEE Energy Conversion Congress and Exposition, pp. 3084 - 3090, Atlanta, GA, 2010. 

  • L. Gao, B. Guan, Y. Zhou and L. Xu, "Model Reference Adaptive System Observer Based Sensorless Control of Doubly-Fed INduction Machine," IEEE International Conference on Electrical Machines and Systems, pp. 931 -936, Incheon, 2010.

  • J. Hu, L. Xu and J. Liu, "Eddy Current Effects on Rotor Position Estimation for Sensorless Control of PM Synchronous Machine", IEEE/IAS06

  • R. Esmaili and L. Xu, "Sensorless Control of Permanent Magnet Generator in Wind Turbine Application", IEEE/IAS06

  • S. Chi and L. Xu, "Sliding Mode Sensorless Control of PM Synchronous Motor for Direct-Drive Washing Machines", IEEE/IAS06

  • L. Xu and Y. Zhang, "Application of a Dual Mechanical Port Machine in HEV", IEEE-VPPC2006, Vehicle Power and Propulsion Conference, United Kingdom, September 6-8, 2006

  • S. Chi and L. Xu, "Position Sensorless Control of PMSM Based on a Novel Sliding Mode Observer over Wide Speed Range", CES/IEEE-PELS2006, Shanghai, August 13-16, 2006

  • S. Chi and L. Xu, "A Special Flux-weakening Control Scheme of PMSM - Incorporating and Adaptive to Wide-Range Speed Regulation", CES/IEEE-PELS2006, Shanghai, August 13-16, 2006

  • J. Hu, L. Xu and J. Liu, "Magnetic Pole Identificaion for PMSM at Zero Speed Based on Space Vector PWM", CES/IEEE-PELS2006, Shanghai, August 13-16, 2006

  • L. Xu and Y. Zhang, "Design and Evaluation of a Dual Mechanical Port Machine and System", CES/IEEE-PELS2006, Shanghai, August 13-16, 2006

  • L. Xu, "A new breed of electric machines - basic analysis and applications of dual mechanical port electric machines", Proceedings of the Eighth International Conference on Electrical Machines and Systems, Vol. 1, pp. 24-31, Nanjing, Sept 27-29, 2005

  • J. Liu, J. Hu and L. Xu, "A modified space vector PWM for Z-source inverter-modeling and design", Proceedings of the Eighth International Conference on Electrical Machines and Systems, Vol. 2, pp. 1242-1247, Nanjing, Sept 27-29, 2005

  • V.Sadasivam and L.Xu, "Position Sensorless Vector Control of Permanent Magnet Machines by Torque Angle Estimation," IEEE-PEDS'97, Singapore, May 26-29, 1997

  • L. Xu and M. Fu, "New Current and Neutral Point Voltage Control Schemes for a Boost Type Three-level Rectifier", IEEE-PESC'97, St. Louis, Misouri, June 22-27, 1997.
  • L. Xu and M. Fu, "A Novel Sensorless Control Approach for PM Motors Using DSP", NAECON'97, Dayton, Ohio, July 14-17, 1997

  • Z. Zhao, L. Xu and A. El-Antably, "Strategies and a Computer Aided Program for Design and Analysis of Induction Machines for Inverter-Driven Variable Speed Systems," IEEE-IAS Annual Meeting, Orlando, 1995

  • Li Zhen and L. Xu, "A Mutual MRAS Identification Scheme for Position Sensorless Field Oriention Control of Induction Machines," IEEE-IAS Annual Meeting, Orlando, 1995

  • C. Bonanno, Li Zhen and L. Xu, "A Direct Field Oriented Induction Machine Drive with Robust Flux Estimaor for Position Sensorless Control," IEEE-IAS Annual Meeting, Orlando, 1995

  • B. Heber L. Xu, and Y.Tang, "Fuzzy Logic Enhanced Speed Control of an Indirect Field Oriented Induction Machine Drive," IEEE Power Electronics Specialist COnference, Atlanta, June, 1995

  • Z. Zhao and L. Xu, "A Dynamic On-Line Parameter Identification and Full-Scale System Experimental Verification for Large Synchronous Machines," IEEE/PES Winter Meeting, 1995.

  • L. Xu and Eric Ruckstadter, "Direct Modeling of Switched Reluctance Mahine by Coupled Field-Circuit Method," IEEE/PES Winter Meeting, 1995.

  • L. Xu and Y. Tang, "A Study of Advanced Static VAR Compensation with Voltage Source and Current Source Converters and a New System," IEEE/PES Winter Meeting, 1995.

  • L. Xu and Y. Tang, "Vector Control and Fuzzy Logic Control of Doubly Fed Variable Speed Drives with DSP Implementation," IEEE/PES Winter Meeting, 1995.

  • L. Xu and F. Liao, "Finete Element Analysis of the Effects of Cross-Coupling in Doubly-Excited Brushless Reluctance Machines," Presented at International Conference on Electrical Machines," 5-8 Sepetember, 1994, Paris, France

  • L. Xu and F. Liao, "Design of the Doubly-Fed Reluctance Motor for Adjustable Speed Drives," IEEE-IAS Annual Meeting Proceedings, Denver, 1994

  • Wei Cheng and Longya Xu, "Torque and Reactive Power Control of a Doubly-Fed Induction Machine by Position Sensorless Scheme" IEEE-IAS Annual Meeting Proceedings, Denver, 1994

  • C. J. Bonnano, Longya Xu and Xingyi Xu, "Robust Parameter Insensitive Position Sensorless Field Orientation control of an Induction Machine", IEEE International Power Electronics Specialist Conference Proceeding, pp. 752-759, June, 1994, Taipei

  • C. J. Bonnano and Longya Xu, "A Position Sensorless Induction Machine Drive for Electric Vehicle Applications", IEEE Workshop On Power Electronics in Transportation, Oct. 20-21, 1994 Dearborn MI

  • Longya Xu, Wei Cheng and Xingyi Xu, "Position Sensorless Control of a Doubly-Fed Induction Machine System Using Only Rotor Side Variables," International Power Electronics and Motion Control Conference Proceeding, pp. 527-634, July, 1994, Beijing

  • Y. Tang and L. Xu, "Adaptive Fuzzy Control of a variable Speed Power Generating System with Doubly Excited Reluctance Machnie," IEEE Power Electronics Specialist Conference Proceeding, pp. 377-384, June, 1994, Taipei

  • W. Cheng, and L. Xu, "A General Purpose Flexible DSP56001 Development System for Motion Control Applications," International Confersnce on Signal Processing Application s & Technology, Dallas, Texas, Oct. 18-21,1994

  • L. Xu and Lurong Ye, "Analysis of a Novel Stator Winding Structure Minimizing harmonic Current and Torque Ripple for Dual Six-Step Converter-Fed High Power AC Machines ", IEEE/IAS Annual Meeting, Toronto, Oct. 1993.

  • L. Xu and Lurong Ye, "A New Design Concept of Permanent Machine for Flux Weakening Operation", IEEE/IAS Annual Meeting, Toronto, Oct. 1993.

  • L. Xu and Yifan Tang, "A New Converter Topology for Advanced Static VAR Compensation In High Power Applications", IEEE/IAS Annual Meeting, Toronto, Oct. 1993.

  • L. Xu and Yifan Tang, "Stability Analysis of a Slip Power Recovery System under Open Loop and Field Orientation Control", IEEE/IAS Annual Meeting, Toronto, Oct. 1993.

  • L. Xu and Yifan Tang, "A High Efficiency Variable Speed Wind-Power Generating System Using Doubly-Excited Brushless Reluctance Machine", presented American Wind Energy Association 23rd Annual Conference, San Francisco, July, 1993

  • L. Xu and Yifan Tang, "A Flexible Active and Reactive Power Control Strategy for a Variable Speed Constant Frequency Generating System", presented to IEEE Power Electronics Specialists Conference, Seattle, Washington, USA, 1993.

  • L. Xu, Yifang Tang and Lurong Ye, "Comparison Study of Rotor Structures of Doubly-Excited Brushless Reluctance Machine by Finite Element Analysis", Submitted to IEEE/PES 1991 Winter Meeting, Columbus

  • L. Xu and Lurong Ye, "A Novel Integrated Design of Electric Drive for Electric Cars", IEEE Workshop on Power Electronics in Transportation, Dearborn, Oct. 22-23, 1992

  • W. Pathomkasikul, D. S. Zinger, M. E. Elbuluk, and L. Xu "Switching Characteristics of MCT in Resonant DC Link Soft-Switching Power Converters", IEEE/IAS Annual Meeting, Houston, Oct. 1992.

  • L. Xu, "Analysis of a Doubly-Excited Brushless Reluctance Machine by Direct Finite Element Method", IEEE/IAS Annual Meeting, Houston, Oct. 1992.

  • L. Xu and Yifan Tang, "A Novel Variable Speed Constant Frequency Wind-Power Generating System Using Doubly-Excited Brushless Reluctance Machine", IEEE/IAS Annual Meeting, Oct. Houston, 1992.

  • Y. Tang and L. Xu, "Stator Field Oriented Control of Doubly-Excited Induction Machine in Wind Power Generating System", 35th Mid West Symposium on Circuit and System, Aug. 9-12, 1992, Washington D.C.

  • A. Keyhani, S. I. Moon, T. Leksan, "Maximum Liklihood Estimation of Synchronous Machine Parameters from Flux Decay Data", IEEE/IAS Annual Meeting, Oct. Houston, 1992.

  • A. Keyhani, H. Tsai and L. Xu, "Modeling of Generator Power Electronic Based Automatic Voltage Regulator (AVR) from Small Voltage Disturbances", The 4th European Conference on Power Electronics and Applications, Sept. 1991.

  • A. Keyhani, L. Xu, and S. Moon, "Identification of Parameters of an AC Electric Machine from Standstill Time Domain Data", presented at 1990 IEEE Workshop on Electronic Applications in Transportation.

  • L. Xu, F. Liang and T. A. Lipo, "Analysis of a New Variable Speed Doubly Excited Reluctance Motor", Proceedings of International Conference on Electric Machines, presented at MIT Boston, July, 1990.

  • H. Toliyat, L. Xu, T. A. Lipo, "A Five Phase Reluctance Motor with High Specific Torque", presented at IEEE-IAS Annual Meeting, Seattle, Oct., 1990.

  • L. Xu, X. Xu, T. A. Lipo and D. W. Novotny, "Vector Control of Synchronous Reluctance Machine Including Saturation and Iron Loss", presented at IEEE-IAS Annual Meeting, Seattle, Oct., 1990.

  • L. Xu, F. Liang, and T. A. Lipo, "Transient Model of the Doubly Fed Reluctance Motor", IEEE Power Engineering Society Summer Meeting, Minneapolis, June, 1990.

  • L. Xu and T. A. Lipo, "Analysis of a Variable Speed Singly-Salient Reluctance Motor Utilizing Only Two Transistor Switches", IEEE IAS Annual Meeting, Pittsburgh, Oct., 1988.

  • T. A. Lipo and L. Xu "A Novel Converter Fed Reluctance Motor with High Power Density", Symposium on Electric Drives, Cagliari, Italy, Oct., 1987