Publications

Patents

 

 Inventor and Co-inventor of several control methods  for use with motor drives and  power electronics apparatus, these inventions are registered in the following  patents:

Patents:

  1. Japan Patent No. P08-294300 “Speed Estimation”, 5 December 1996
  2. US Patent Number: 5502633,  26 March 1996
  3. Rep. Of China  Patent Number: 31507,  08 July 1995
  4. Australia Patent Number: 651920,  29 December 1994
  5.  US Patent Number: 5361197,  1 November 1994
  6. Japan Patent No. PH06-98545   “Neutral Point Clamped inverter control Apparatus”, 8 Jan. 1994
  7.  Japan Patent No. PH05-268773 “Control Method for Inverter Based on PWM”, 15 Oct. 1993. 
  8. L. Ben-Brahim, M. Benammar, M. Alhamadi, N. Alemadi, M. Alhitmi ” Apparatus For The Determination Of The Angle From Sine/Cosine Transducers ”  UK patent  GB2447901B,  June 1st  2011.
  9. L. Ben-Brahim, M. Benammar, M. Alhamadi, N. Alemadi, M. Alhitmi ” PLL Type Resolver To 360 Degrees Linear Converter Apparatus ”  UK patent  GB2448350B, June 1st  2011.

   Pending Patents:

  1. UK patent application GB0911185.7 date of filing 1/3/2009

 

Book Chapters

 

  1. Ben-Brahim, L, T. Yoshino (2013)  “High Power Drive Systems For Industrial Applications –Practical Examples”, Power Electronics for Renewable Energy Systems, Transportation and Industrial Applications”,  WILLEY 2013

 

Journal papers

 

  1. Trabelsi, k. Ghazi, H. Abu-Rub, L. Ben-Brahim, “Finite Control Set Model Predictive Control for Grid Connected Packed U Cells Multilevel Inverter,” IEEE Trans. Ind. Electronics, 2016, accepted.
  2. Ben-Brahim, A. Gastli, M. Trabelsi, k. Ghazi, M. Houchati, H. Abu-Rub, “Modular Multilevel Converter Circulating Current Reduction using Model Predictive Control,” IEEE Trans. Ind. Electronics, 2016, accepted. DOI 10.1109/TIE.2016.2519320
  3. A. Al-Emadi, L. Ben-Brahim, M. Benammar “A New Tracking Technique for Mechanical Angle Measurement” Elsevier, Measurement Journal Vol. 54, pp. 58-64 Elsevier, 2014.
  4. Sun, Baoming Ge, D. Bi, Y. Liu, H. Abu-Rub, L. Ben-Brahim, F. Z. Peng, “Modeling, Impedance Design, and Efficiency Analysis of Quasi- Z Source Module in Cascaded Multilevel Photovoltaic Power System,” in IEEE Transactions on Industrial Electronics, vol. 61, no. 11, pp. 6108-6117, Nov. 2014.
  5. Trabelsi, K.A. Ghazi, N. Al-Emadi, L. Ben-Brahim, “A weighted real-time predictive controller for a grid connected flying capacitors inverter”, Elsevier  International Journal of Electrical Power and Energy systems, vol. 49, pp. 322-332, 2013.
  6. Trabelsi, L. Ben-Brahim, “A New Design of dSpace Microcontroller-based Real-Time Digital Predictive Controller for Grid Connected Photovoltaic Power Conditioning System”, International Journal of Advanced Research in Computer and Communication Engineering, Vol. 2, Issue 10, October 2013
  7. Trabelsi and L. Ben-Brahim “An adaptive hysteresis dead-band-based SVPWM method for multi-level inverter”, Int. J. Power Electronics, Inderscience,  Vol. 5, Nos. 3/4, pp. 280-299, 2013.
  8. Ben-Brahim, M. Benammar, M. Alhamadi ” A Resolver Angle Estimator Based On Its Excitation Signal” IEEE Transactions On Industrial Electronics, Vol. 56, No. 2, pp. 574-580, February 2009.
  9. Ben-Brahim  “A Discontinuous PWM Method for Balancing the Neutral Point Voltage in Three-Level Invereter-Fed Variable Frequency Drives (VFDs)” IEEE Transactions on Energy Conversion, Vol. 23, No. 4, pp. 1057-1063, December 2008.
  10. Ben-Brahim, M. Benammar, M. Alhamadi, N. Alemadi, M. Alhitmi ” A New Low Cost Linear Resolver Converter” IEEE Sensors Journal, Volume 8,  Issue 10,  Page(s):1620–1627, Oct. 2008.
  11. Benammar; L. Ben-brahim; Mohd. A. Alhamadi; M. El-Naimi, “A Novel Method for Estimating the Angle from Analog Co-Sinusoidal Quadrature Signals,” Sensors & Actuators A: Physical, A 142- pp.225-231, March 2008.
  12. Ben-Brahim and S. Tadakuma ” A Novel Multilevel Carrier-Based PWM Control Method for GTO Inverter in Low Index Modulation Region” IEEE Transactions On Industry Applications, Vol. 42, No. 1, January-February 2006.
  13. Benammar; L. Ben-brahim; Mohd. A. Alhamadi “A High Precision Resolver-to-DC Converter “, IEEE Transactions on Instrumentation & Measurement, Vol. 54, No. 6, December 2005.
  14. Ben-Brahim  ” On the Compensation of Dead-Time and Zero Current Crossing for a PWM Inverter Controlled AC Servo Drive”  IEEE Transactions on Industrial Electronics,  Vol. 51, No. 5, October 2004.
  15. Benammar, L. Ben-Brahim and M. Alhamadi ” A Novel Resolver-to-360 Degree Linearized Converter “, IEEE Sensors Journal, Vol. 4, No. 1, pp:96-101, February 2004.
  16. Ben-Brahim “repetitive control based PWM inverter dead-time compensation for ac servo drive” Qatar Engineering Journal, Vol. 15, 2002.
  17. Ben-Brahim, S. Tadakuma and A. Akdag  ” Speed Control of Induction Motor without Rotational Transducers” IEEE IA Transactions,  VOL. 35, NO.4,  pp. 844-850, July/August 1999.
  18. Ben-Brahim “Motor Speed Identification via Neural Networks” IEEE Industry Applications  Magazine, Vol. 1, No. 1 pp. 28-32 January/February 1995.
  19. Ben-Brahim  and A. Kawamura  “Digital Control of Induction Motor Current Using Predictive State Observer”  IEEE Transactions on power electronics Vol. 7, No.3, pp. 551-559 July 1992. (Also published in the book  “Sensorless Control of AC Motor Drives” IEEE Press 1996,  by Rajashekara et all.).
  20. Ben-Brahim  and A. Kawamura “A Fully Digitized Field Oriented Controlled Induction Motor     Drive  Using Only Current Sensors”  IEEE Transactions on Industrial Electronics Vol. 39,  No. 3,     pp. 241-249, June 1992.
  21. Ben-Brahim  and A. Kawamura “Digital Current Regulation of  Field Oriented Controlled Induction Motor   Based on Predictive Flux Observer”  IEEE Transactions on Industry Applications, VOL. 27, NO.5,  pp. 956-961, September/October 1991.
  22. Kawamura and L.  Ben-Brahim “Deadbeat Control of Induction Motor Current Using  State  Observer  With Adaptive Poles Selection” Transaction IEE of Japan, vol. 108-D, No. 5, pp. 590-597, May, 1990.

 

Conference Refereed Papers

 

  1. M. Meraj, A. Iqbal, L. Brahim, R. Alammari, H. Abu-Rub, “A High Efficiency and High Reliability Single-Phase Modified Quasi Z-Source Inverter for Non-Isolated Grid-Connected Applications”, IEEE IECON’15, pp. 1-6, Yokohama, Japan, Nov. 2015.  
  2. Abduallah, A.A.; Iqbal, A.; Ben-Brahim, L. , “Space vector pulse width modulation techniques for a five-phase impedeance source and quazi impedeance source inverters,” IEEE ICIT’15, pp. 1173-1178, 2015.
  3. L. Ben-Brahim, A. Gastli, K.A. Ghazi, “ Implementation of Iterative Learning Control based Deadtime Compensation for PWM Inverters” 17th Conference on Power Electronics and Applications, EPE’15-ECCE Europe, Geneva, Switzerland, 8-10, September 2015.
  4. A. Gastli, L. Ben-Brahim, M.B.H. Rhouma, “ANN-Based Extraction Approach of PV Cell Equivalent Circuit Parameters” 17th Conference on Power Electronics and Applications, EPE’15-ECCE Europe, Geneva, Switzerland, 8-10, September 2015.
  5. Azani, H.; Massoud, A.; Ben-Brahim, L.; Williams, B.W.; Holliday, D., “Multiloop control strategy for grid-interfaced three-phase voltage source inverter with passively damped LLCL-filter,” in Renewable Power Generation Conference (RPG 2014), 3rd , vol., no., pp.1-6, 24-25 Sept. 2014
  6. Azani, H.; Massoud, A.; Benbrahim, L.; Williams, B.W.; Holiday, D., “An LCL filter-based grid-interfaced three-phase voltage source inverter: Performance evaluation and stability anaylsis,” in Power Electronics, Machines and Drives (PEMD 2014), 7th IET International Conference on , vol., no., pp.1-6, 8-10 April 2014
  7. Massoud, A.; Ben-Brahim, L.; Hamid, A.; Williams, B.W.; Holliday, D., “Stability analysis of an active-damped LLCL filter- based grid-connected three-phase inverter,” in Microelectronics (ICM), 2014 26th International Conference on , vol., no., pp.240-243, 14-17 Dec. 2014
  8. K.A Ghazi, L. Ben-Brahim, “Towards Ultra High Frequency and High Efficiency Gate Drive Circuits”, 7th IEEE GCC confrenece 2013, 17-20 Nov. 2013, Doha, Qatar.
  9. Ashour,M.; Ben-Brahim, L; Al-Emadi.N . “ Matlab/Simulink Implementation & Simulation of Islanding Detection using Passive Methods”, 7th IEEE GCC confrenece 2013, 17-20 Nov. 2013, Doha, Qatar.
  10.  T. Yoshino, H Masuda, Hiromi Hosoda, M. Tsukakoshi, M. Mostafa, L.  Ben-Brahim, “High-Reliability Extra-Large Motor Drives for Oil and Gas Industry”, 7th IEEE GCC conference and exhibition 17-20 November 2013, Doha, Qatar.
  11. M. Trabelsi, L. Ben-Brahim, A. Gastli, K.A. Ghazi, “An Improved Predictive Control Approach for Multilevel Inverters”, SLED 2013, 4th Symposium on Sensorless Control for Electrical Drives, 17.-19. October 2013 – Munich, Germany
  12. M. Trabelsi, L. Ben-Brahim, “A Newly Normalized Deadbeat Control for Grid Connected Distributed Generation System”, IEEE Energy Conversion Congress and Expo, ECCE 2013, USA, September 2013.
  13. M. Trabelsi, L. Ben-Brahim, T. Yokoyama, “ Repetitive Scheme Plugged-in Parallel with Deadbeat Controller for VFD Fed by Cascaded Multilevel Inverter”, IEEE Energy Conversion Congress and Expo, ECCE 2013, USA, September 2013.
  14. M. Trabelsi, L. Ben-Brahim, K.A Ghazi, “An Improved Real-Time Digital Feedback Control for Grid Connected Multilevel Inverter”, 39th Annual Conference of the IEEE Industrial Electronics Society, IECON 2013, Austria, November 2013.
  15. Trabelsi, M.; Ghazi, K.A. ; Al-Emadi, N. ; Ben-Brahim, L.  (2012)“ An original controller design for a grid connected PV system” IECON 2012 – 38th Annual Conference on IEEE Industrial Electronics Society, 25-28 Oct. 2012, Montreal, Canada
  16. Fayyad, Y.; Ben-Brahim, L. “Multilevel cascaded Z source inverter for PV power generation system”, 2012 International Conference on Renewable Energy Research and Applications (ICRERA), 11-14 Nov. 2012, Nagasaki, Japan.
  17. Fayyad, Y.; Ben-Brahim, L. “A Wavelet-Based Passive Islanding Detection Technique”, 2012 International Conference on Renewable Energy Research and Applications (ICRERA), 11-14 Nov. 2012, Nagasaki, Japan.
  18. L. Ben-Brahim, M. Benammar, T.Yoshino, H. Hosoda, R. Kurosawa and Y. Fayyad,“Electric Drives for LNG Plants”, Proceedings of the 3rd Gas Processing Symposium, Qatar, March 2012
  19. M. Trabelsi, M. Brahim, K.A Ghazi, L. Ben-Brahim, S. Al-Dosari, J. Belhadj, “A New Design of Predictive Controller Combined with an Islanding Detection Method for a Grid Connected Photovoltaic Power Conditioning System” The Third International Renewable Energy Congress,  pp. 352-358, Hammamet-Tunisia,  December 20-22, 2011 
  20. A.I. Maswood, L. Ben-brahim, P. H. Raj “An Investigation into the Efficiency of Silicon Carbide Based Power Inverters” PEIA2011,Doha, Qatar, November 2011.
  21. M. Trabelsi, L. Ben‐Brahim “Experimental Photovoltaic Power Supply based on Flying Capacitors Multilevel Inverter” International Conference On Clean Electrical Power  ICCEP 2011, Ischia Italy,  June 14th-16th, 2011
  22. Y. Tajima, Y. Hori, T. Ino, T. Yokoyama, L. Ben-Brahim, and  M. Trabelsi, “Deadbeat Control with Multi-Sampling Compensation For Medium-Voltage Motor Drives by Cascaded Multi-Cell Inverter Using FPGA Based Hardware Controller” 8th International Conference on Power Electronics – ECCE Asia, The Shilla Jeju, Korea, May 30-June 3, 2011.
  23. M. Trabelsi, L.  Ben-Brahim, “Development of a grid connected photovoltaic power conditioning system based on flying capacitors inverter”8th International Multi-Conference on Systems, Signals and Devices (SSD), Sousse, Tunisia, March 2011
  24. M. Tsukakoshi, M. Al Mamun, K. Hashimura, H. Hosoda, J. Sakaguchi, L. Ben-Brahim “ Novel Torque Ripple Minimization Control for 25MW Variable Speed Drive System Fed by Multilevel Voltage Source Inverter” 39th Turbomachinery Symposium, Houston , USA, October 4-7, 2010
  25. L. Ben-Brahim, M. Benammar “ A New PLL Method for Resolvers” The 2010 International Power Electronics Conference, IPEC2010,, pp. 299-305, Sapporo Japan, June 21-24 2010
  26. L. Ben-Brahim, M. Trabelsi, T. Yokoyama and T. Ino “ A Real Time Digital Feedback Control for VFD Fed by Cascaded Multi-Cell Inverter” The 2010 International Power Electronics Conference, IPEC2010,, pp. 2493-2500, Sapporo Japan, June 21-24 2010
  27. L. Ben-Brahim, M. Benammar, A. Mahran, A. Alhomsi “ A New Closed-Loop Converter for Sinusoidal Encoders -Preliminary Results-“, 13th European Conference on Power Electronics and Applications, EPE2009, Barcelona, Spain, September 8-10 2009.
  28. L. Ben-Brahim “Iterative Learning Control for Variable Frequency Drives” IEEE Power Electronics Specialist Conference, PESC08,pp. 617-623, Greece, June 15-19, 2008.
  29. L. Ben-Brahim, M. Benammar, M. Alhamadi, N. Alemadi, M. Alhitmi” A New Angle Determination Method for Resolvers” The IEEE 10th International Workshop on Advanced Motion Control,Vol.1 pp. 126-131,  Trento, Italy,   March 26th -28th, 2008.
  30. M. Benammar, L. Ben-Brahim, M. Alhamadi, N. Alemadi, M. Alhitmi “ A Resolver Converter Based upon a Novel Open-Loop Technique” IEEE International Conference On Industrial Technology, IEEE ICIT2008, China, 23-24 April 2008.

 

  1. M. Benammar,  Lazhar Ben-Brahim,  Mohd. A. Alhamadi,  Nasser Al-Emadi, Mohammed Al-Hitmi, “An Open-Loop Technique for Angle Determination from Position Encoders”, IEEE International Symposium on Industrial Electronics (ISIE2008), Cambridge, UK, June 30- July 2, 2008.  
  2. L. Ben-Brahim ” A neutral point voltage balancing method for multi-level GTO inverters” IEEE Industry Applications Conference IAS’06, IAS24P1, Florida, USA, October 2006.
  3. M. Benammar, L. Ben-Brahim, M. Alhamadi, Mohamed El-Naimi  “ Accurate interface for resolvers and sinusoidal encoders” Eurosensor XX Conference, M3B-P2, Sweeden, September 2006. 
  4. M. Benammar, L. Ben-Brahim, M. Alhamadi, Mohamed El-Naimi  “ A novel converter for sinusoidal encoders” IEEE Sensor Conference, Korea, October 2006. 
  5. M. Alhamadi, M. Benammar and L. Ben-Brahim “Precise method for linearizing sine and cosine signals in resolvers and quadrature encoders applications” IEEE IECON’04, Seoul, Korea, November 2004. 
  6. L. Ben-Brahim, M. Benammar and M. Alhamadi ” A New Iterative Learning Control Method for PWM Inverter Current  Regulation “, IEEE PEDS’03 Proceedings, pp. 1460-1465, November  2003.
  7. L. Ben-Brahim, T. Yokoyama and A. Kawamura ” Digital Control for UPS Inverters “, IEEE PEDS’03 Proceedings, pp. 1252-1257, November  2003.
  8. L. Ben-Brahim and S. Tadakuma  ” A New Multilevel Carrier-Based PWM Control Method for GTO Inverter in Low Index Modulation Region” Proceeding IEEE IAS’03, USA, October 2003.
  9. L. Ben-Brahim and S. Tadakuma  ” A new PWM control for GTO minimum on-pulse compensation” Proceeding IEEE IAS’01, pp.1015-1022 vol.2, USA, October 2001.
  10. L. Ben-Brahim “New optimal methods for PWM Inverter Dead-time Compensation”, EPE2001, Graz, Austria, August 2001.
  11. L. Ben-Brahim and A. Kawamura ” Improvement of PWM inverter Output” Japan IAS  Conference, Tokushima, Japan August 2000.
  12.  M. Alhamadi, L. Ben-Brahim and S. Tadakuma ” Industrial AC motor drives -Status of technology” International Power Electronics Conference, IPEC-Tokyo, April 2000.
  13. L. Ben-Brahim ” Improvement of a PWM Controlled NPC GTO Inverter for AC Motor Drives” Proceedings of the IEEE ISIE’99 , Vol.2,  pp. 819-824, Slovenia, July 1999.
  14. L. Ben-Brahim,  A. Gastli and M. A. Al-Hamadi  ” Autotuning for sensorless AC motor drive systems” Proceedings of the IEEE ISIE’99 , Vol. 1,  pp. 367-372, Slovenia, July 1999.
  15. L. Ben-Brahim and S. Tadakuma  ” Speed Control of Induction Motor without Rotational Transducers” Proceeding IEEE IAS’98, pp.625-632, USA, October 1998.
  16. M. Elloumi, L. Ben-Brahim and M. Al-Hamadi “Survey of Speed Sensorless Controls for IM drives” Proceeding IEEE IECON’98 Vol.2, pp.1018-1023, Germany, August/September 1998.
  17. L. Ben-Brahim “The analysis and Compensation of dead-time effects in three phase PWM inverters” Proceeding IEEE IECON’98 Vol.2, pp.792-797, Germany, August/September 1998.
  18. L. Ben-Brahim and S. Tadakuma  “Practical Considerations for Sensorless Induction Motor Drive system”  Proceeding IEEE IECON’98 Vol.2, pp.1002-1007, Germany, August/September 1998.
  19. L. Ben-Brahim “Improvement of the stability of a V/f controlled Induction Motor drive system” Proceeding IEEE IECON’98 Vol.2, pp.859-864, Germany, August/September 1998.
  20. L. Ben-Brahim and R. Dhaouadi  “Disturbance observer based robust force control of a robot   manipulator” 4th International Conf. on Control, Automation, Robotics & Vision,  ICARCV’96 Vol.1, pp.196-200, Singapore, December 1996.
  21. L. Ben-Brahim and R. Dhaouadi   “Tracking Control of  Robot Manipulators ”  JTEA’96,  Vol.1,  pp.253-262, November 1996.
  22. L. Ben-Brahim and R. Dhaouadi  “Robust force control of a robot   manipulator without force  sensor” JTEA’96, Vol.1, pp.244-252, November 1996.
  23. L. Ben-Brahim and R. Dhaouadi  ” Self-tuning Force Controller for a Robot Manipulator using Neural Networks” JTEA,pp. 69-76, Tunisia, November 1995.
  24. L. Ben-Brahim et all.  ” Implementation of an  Induction Motor Speed Estimator via Neural Networks” International Power Electronics Conference, IPEC-Yokohama, pp. 52-58, April 1995.
  25. L. Ben-Brahim and R. Kurosawa  ” Identification of  Induction Motor Speed using Neural Networks”  Power Conversion Conference, PCC-Yokohama, pp. 689-694 April 1993 (Also published in the book  “Sensorless Control of AC Motor Drives” IEEE Press 1996, by Rajashekara et all.).
  26. L.  Ben-Brahim  and A. Kawamura  “Digital Current Regulation of  Field Oriented Controlled Induction  Motor Using Only Current Sensors” International Symposium on Power Electronics, Seoul, Korea April 1992.
  27. L.  Ben-Brahim  and A. Kawamura  “A Fully Digital Control of a Field Oriented Induction Motor Drive using  Flux Observer  with and without Speed Sensor -600Hz Switching Frequency Case- ” IEEE Industrial Electronics Conference IECON’91 Proceedings, Vol. 1 pp. 633-638, Kobe, JAPAN, Nov. 1991.
  28. L. Ben-Brahim  and A. Kawamura  “Digital Current Regulation of Field Oriented Controlled Induction Motor Based on Predictive Flux Observer”  IEEE Industry Application Society IAS Proceedings, pp. 607-612, Seattle, U.S.A. Oct. 1990.
  29. L. Ben-Brahim  and A. Kawamura “Digital Control of Induction Motor Current Using Predictive State Observer” International Power Electronics Conference IPEC’90, Proceedings, pp.489-496, Tokyo, JAPAN, April 1990.
  30. L. Ben-Brahim and R. Kurosawa “Adaptive  Speed Estimation via Neural Networks”  IEE of Japan IAS annual meeting, p. (6-49)-(6-50) March 1993.
  31. S. Miyazaki, R. Kurosawa and L. Ben-Brahim  “Characteristics Improvement of a PWM Controlled Three  Level GTO Inverter” National Convention record I.E.E. Japan,  March 1993 (in Japanese).
  32. L. Ben-Brahim and A. Kawamura “Speed and Voltage Sensorless Field Oriented  Control of Induction Motor  Based on Observer with Digital Current Regulation”  IEE of Japan Industry Application Society IAS Proceedings, pp. I.125-132, Osaka, JAPAN, August 1990.
  33. L.  Ben-Brahim and A. Kawamura “Deadbeat Control of Induction Motor Current Using State Observer  With Adaptive Poles Selection” IEE of Japan Industry Application Society IAS Proceedings, pp. 323-328,  Hakata, JAPAN, August 1989.
  34. L.  Ben-Brahim  and A. Kawamura  “Simulation  Study  of Digital Control of Induction Motor Current  with Deadbeat Response” Technical  Meeting  of  IEE  of  Japan   on Semiconductor Power Conversion, SPC-88-64, Nagaoka, JAPAN, 1988.

 

Technical Reports

 

  1. Ben-Brahim, M. Benammar, J.Romero ” RasGas Plant Harmonics Study -Harmonics Measurement-“ RasGas, January 2010.
  2. Development of High Power Three-level GTO inverter for Induction Motor Drives”, Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, March 1992.
  3. Ben-Brahim ” Development of High Power Three-level GTO inverter for Induction Motor Drives”, Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, March 1992.
  4. Ben-Brahim ” NPC AC/DC Converter Control”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, November 1992.
  5. Ben-Brahim ” Simulation of Speed Sensorless using NN Method”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, January 1993.
  6. Ben-Brahim ” Comparison between Neural Netweorks and MRAS based speed estimators”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, November 1993.
  7. Ben-Brahim ” Converter Stability using MatrixX”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, Sepetember 1994.
  8. Ben-Brahim ” Speed Sensorless Vector Controlled IM Drive based on Neural Networks Technique”  Power Electronics and Motor Drives Lab Toshiba Corporation, Japan, July 1995.
  9. Ben-Brahim ” Medium Voltage (MV) Inverter for Induction Motor Drive Systems”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, March 1996.
  10. Ben-Brahim ” A Method to Stabilize the V/f Control Scheme for High Voltage Induction Motor Drive System”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, July 1996.
  11. Ben-Brahim ” High Voltage Energy Saving Drive System for Induction Motor ”  Power Electronics control and Motor Drives Lab Toshiba Corporation, Japan, May 1997.