University of Kentucky College of Engineering

Publications & Patents

Book and Book Chapter:

  • N. Demerdash, J. He, and H. Chen, “Electric Machinery and Drives - An Electromagnetics Perspective”, Wiley-IEEE Press, 2023 (Textbook).
  • R. Cuzner and J. He, "Chapter 2: Power Electronic Converters Impacts on MVDC System Architectures." Medium Voltage DC System Architectures, edited by B. Grainger and R. W. De Doncker, IET Press, February 2022, pp. 19-93.

Patents:

  • J. He and N. Demerdash, "On-line diagnostic method for electronic switch faults in neutral-point-clamped converters," U.S. Patent 11,119,159, issued Sept 14, 2021.
  • J. He and N. Demerdash, “Fault-tolerant topology for multilevel T-type converters,”  U.S. Patent 10,658,920, issued May 19, 2020.
  • M. Dame, J. He, and D. Zhang, “Compact design of multilevel power converter systems,” U.S. Patent 10,658,941, issued May 19, 2020.
  • D. Zhang, J. He, and S. Madhusoodhanan, “Three-level two-stage decoupled active NPC converter,” U.S. Patent 10,581,342, issued Mar 03, 2020.
  • C. Li, A. Jassal, N. Thiagarajan, J. He, S. Prabhakaran, K. Huh, X. Kang, and R. Wang, “Magnetic Unit and An Associated Method Thereof,” U.S. Patent No. 11,404,203, issued on Aug. 2, 2022.
  • D. Pan, M. Dame, D. Zhang, and J. He, “Method for shutdown of an active neutral point clamped converter,” U.S. Patent 10,547,251, issued Jan 28, 2020.
  • D. Zhang, J. He, S. Madhusoodhanan, and D. Pan, “Method and system for operating a phase-leg of a three-level active neutral point clamped converter,” U.S. Patent 10,291,150, issued May 14, 2019.
  • T. Zhao, J. He, Y. Familiant, and M. Yang, “Methods and systems for operating hybrid power devices using driver circuits that perform indirect instantaneous load current sensing using stored I-V characteristics,” U.S. Patent 10,020,802, issued July 10, 2018.
  • D. Zhang, R. Zhou, L. Garces, and J. He, “Modulator for a hybrid converter system,” U.S. Patent 9,979,322, issued May 22, 2018.
  • T. Zhao, J. He, Y. Familiant, and M. Yang, “Methods and systems for operating hybrid power devices using driver circuits that perform indirect instantaneous load current sensing,” U.S. Patent 9,722,581, issued Aug 01, 2017.
  • T. Zhao, J. He, V. Bhavaraju, and M. Yang, “Methods and systems for operating hybrid power devices using multiple current-dependent switching patterns,” U.S. Patent 9,397,657, issued July 19, 2016. 

Selected Journal Papers:

  • Z. Ullah, M. Y. Metwly, A. Hemeida, A. S. Abdel-Khalik, J. He and S. Ahmed, "Demagnetization and Thermal Analysis of Six-Phase Permanent Magnet Motor-based Integrated Onboard EV Charging," IEEE Transactions on Transportation Electrification, Sept 2023.
  • P. Roy et al., "Impact of Electric Vehicle Charging on Power Distribution Systems: A Case Study of the Grid in Western Kentucky," IEEE Access, vol. 11, pp. 49002-49023, 2023.
  • M. T. Fard, J. He, H. Huang and Y. Cao, "Aircraft Distributed Electric Propulsion Technologies - A Review," IEEE Transactions on Transportation Electrification, vol. 8, no. 4, pp. 4067-4090, Dec. 2022. (Listed as one of the most popular articles for this journal in IEEE Xplore, accessed on Sept 30, 2022).
  • P. Roy, Y. Liao and J. He, "Economic Dispatch for Grid-Connected Wind Power With Battery-Supercapacitor Hybrid Energy Storage System," IEEE Transactions on Industry Applications, August 2022.
  • P. Roy, J. He, T. Zhao and Y. Singh, "Recent Advances of Wind-Solar Hybrid Renewable Energy Systems for Power Generation: A Review," IEEE Open Journal of the Industrial Electronics Society, vol. 3, pp. 81-104, 2022. (Listed as the most popular article for this journal in IEEE Xplore, accessed on May 1, 2022)
  • L. Wang, T. Zhao and J. He, "Centralized Thermal Stress Oriented Dispatch Strategy for Paralleled Grid-Connected Inverters Considering Mission Profiles," IEEE Open Journal of Power Electronics, May 2021.
  • J. Benzaquen, J. He and B. Mirafzal, "Toward more electric powertrains in aircraft: Technical challenges and advancements," IEEE CES Transactions on Electrical Machines and Systems, vol. 5, no. 3, pp. 177-193, Sept. 2021.
  • H. Chen, J. He, X. Guan, N. A. O. Demerdash, A. El-Refaie and C. H. T. Lee, "High-Resistance Connection Diagnosis in Five-Phase PMSMs Based on the Method of Magnetic Field Pendulous Oscillation and Symmetrical Components," IEEE Transactions on Industrial Electronics, Mar 2021.
  • J. He, Q. Yang and Z. Wang, "On-line fault diagnosis and fault-tolerant operation of modular multilevel converters — A comprehensive review," CES Transactions on Electrical Machines and Systems, vol. 4, no. 4, pp. 360-372, Dec. 2020.
  • X. Yuan, J. He, S. Li, L. Li, S. Shi and B. He, "Can Electric Vehicles Meet Highway-Trip Requirements?: Exploration of the Real-World Impact on Highway Driving Range Derating," IEEE Industrial Electronics Magazine, vol. 14, no. 4, pp. 6-19, Dec. 2020.
  • M. T. Fard, M. Abarzadeh, K. A. Noghani, J. He and K. Al-Haddad, "Si/SiC hybrid 5-level active NPC inverter for electric aircraft propulsion drive applications," CJEE, vol. 6, no. 4, pp. 63-76, Dec. 2020.
  • P. Roy, J. He and Y. Liao, "Cost Minimization of Battery-Supercapacitor Hybrid Energy Storage for Hourly Dispatching Wind-Solar Hybrid Power System," IEEE Access, vol. 8, pp. 210099-210115, 2020.
  • M. T. Fard, W. A. Khan, J. He, N. Weise and M. Abarzadeh, "Fast online diagnosis of open-circuit switching faults in flying capacitor multilevel inverters," CJEE, vol. 6, no. 4, pp. 53-62, Dec. 2020.
  • J. He, D. Zhang, and D. Pan, "PWM Strategy for MW-Scale “SiC+Si” Active NPC Converter in Electric Aircraft Propulsion Applications," IEEE Transactions on Industry Applications, June 2020.
  • H. Chen, J. He, N. Demerdash, X. Guan, and C. Lee, "Diagnosis of Open-Phase Faults for a Five-Phase PMSM Fed by a Closed-Loop Vector-Controlled Drive Based on Magnetic Field Pendulous Oscillation Technique," IEEE Transactions on Industrial Electronics, May 2020.
  • L. Wang, J. He, T. Han and T. Zhao, "Finite Control Set Model Predictive Control with Secondary Problem Formulation for Power Loss and Thermal Stress Reductions," IEEE Transactions on Industry Applications, April 2020.
  • S. Huang, G. Cao, J. Xu, Y. Cui, C. Wu and J. He, "Predictive Position Control of Long-Stroke Planar Motors for High-Precision Positioning Applications," IEEE Transactions on Industrial Electronics, April 2020.
  • X. Wang, Z. Wang, M. Gu, D. Xiao, J. He and A. Emadi, "Diagnosis-Free Self-Healing Scheme for Open-Circuit Faults in Dual Three-Phase PMSM Drives," IEEE Transactions on Power Electronics, Mar 2020.
  • Y. Xu, Z. Wang, P. Liu and J. He, "A Soft-Switching Current-Source-Inverter Fed Motor Drive With Reduced Common-Mode Voltage," IEEE Transactions on Industrial Electronics, Mar 2020.
  • D. Pan, D. Zhang, J. He, C. Immer and M. Dame, "Control of MW-Scale High-Frequency “SiC+Si” Multilevel ANPC Inverter in Pump-Back Test for Aircraft Hybrid-Electric Propulsion Applications," IEEE Journal of Emerging and Selected Topics in Power Electronics, Jan 2020.
  • D. Zhang, J. He and D. Pan, "A Megawatt-Scale Medium-Voltage High Efficiency High Power Density “SiC+Si” Hybrid Three-Level ANPC Inverter for Aircraft Hybrid-Electric Propulsion Systems," IEEE Transactions on Industry Applications, vol. 55, no. 6, pp. 5971-5980, Nov.-Dec. 2019.
  • J. He et al., "Multi-Domain Design Optimization of dv/dt Filter for SiC-Based Three-Phase Inverters in High-Frequency Motor-Drive Applications," IEEE Transactions on Industry Applications, vol. 55, no. 5, pp. 5214-5222, Sept.-Oct. 2019.
  • R. Katebi, J. He and N. Weise, "Investigation of Fault Tolerant Capabilities in an Advanced Three-Level Active T-Type Converter," IEEE Journal of Emerging and Selected Topics in Power Electronics, vol. 7, no. 1, pp. 446-457, Mar. 2019.
  • D. Zhang, J. He and S. Madhusoodhanan, “Two-Stage Decoupled 3-Level Active Neutral Point Clamped Converter with SiC MOSFET and Si IGBT,” IEEE Transactions on Industry Applications, vol. 54, no. 6, Nov/Dec 2018.
  • J. He, R. Katebi, N. Weise, N. Demerdash, and L. Wei, “A Fault-Tolerant T-Type Multilevel Inverter Topology with Increased Overload Capability and Soft-Switching Characteristics,” IEEE Transactions on Industry Applications, vol. 53, no. 3, pp. 2826-2839, May 2017.
  • J. He, N. Demerdash, N. Weise, and R. Katebi, "A Fast On-Line Diagnostic Method for Open-Circuit Switch Faults in SiC-MOSFET Based T-Type Multilevel Inverters," IEEE Transactions on Industry Applications, vol. 53, no. 3, pp. 2948-2958, May-June 2017.
  • J. He, R. Katebi, and N. Weise, “A Current-Dependent Switching Strategy for Si/SiC Hybrid Switch Based Power Converters,” IEEE Transactions on Industrial Electronics, vol. 64, no. 10, Oct. 2017.
  • R. Katebi, J. He and N. Weise, “An Advanced Three-Level Active Neutral-Point Clamped Converter with Improved Fault-Tolerant Capabilities,” IEEE Transactions on Power Electronics, vol. 33, no. 8, pp. 6897-6909, Oct. 2017.
  • X. Wang, Z. Wang, Z. Xu, J. He and W. Zhao, "Diagnosis and Tolerance of Common Electrical Faults in T-type Three-level Inverters Fed Dual Three-phase PMSM Drives," IEEE Transactions on Power Electronics, vol. 35, no. 2, pp. 1753-1769, Feb. 2020.
  • J. Sun, G. Cao, S. Huang, Y. Peng, J. He and Q. Qian, "Sliding-Mode-Observer-Based Position Estimation for Sensorless Control of the Planar Switched Reluctance Motor," IEEE Access, vol. 7, pp. 61034-61045, 2019.
  • G. Cao, H. Hu, S. Huang, J. Sun and J. He, "An Assistant-Mover-Based Position Estimation Method for Planar Switched Reluctance Motors," IEEE Transactions on Industrial Electronics, vol. 67, no. 7, pp. 6066-6077, July 2020.
  • H. Chen, X. Liu, N. A. O. Demerdash, A. El-Refaie, Z. Chen and J. He, "Computationally Efficient Optimization of a Five-Phase Flux-Switching PM Machine Under Different Operating Conditions," IEEE Transactions on Vehicular Technology, May 2019.
  • S. Huang, G. Cao, Y. Peng, C. Wu, D. Liang and J. He, "Design and Analysis of a Long-Stroke Planar Switched Reluctance Motor for Positioning Applications," IEEE Access, vol. 7, pp. 22976-22987, 2019.
  • H. Chen, X. Liu, N. Demerdash, A. EL-Refaie, J. Zhao and J. He, "Comparison and Design Optimization of a Five-Phase Flux-Switching PM Machine for In-Wheel Traction Applications," IEEE Transactions on Energy Conversion, 2019.
  • G. Cao, N. Chen, S. Huang, S. Xiao, and J. He, “Nonlinear Modeling of the Flux Linkage in Two-Dimensional Plane for the Planar Switched Reluctance Motor,” IEEE Transactions on Magnetics, vol. 54, no. 11, June 2018.
  • H. Chen, X. Liu, A. EL-Refaie, J. Zhao, N. Demerdash and J. He, "Comparative Study of Winding Configurations of a Five-Phase Flux-Switching PM Machine," IEEE Transactions on Energy Conversion, 2019.
  • G. Cao, W. Li, S. Huang, and J. He, “Modeling, Analysis, and Implementation of a Novel Wireless-Moving-Levitating System with Multiple Magnetic Fields,” Electric Power Components and Systems, vol. 47, no. 6-7, 515-525, March 2019.
  • P. Zhang, G. Sizov, J. He, D. M. Ionel, and N. Demerdash, “Calculation of magnet losses in concentrated-winding permanent magnet synchronous machines using a Computationally Efficient - Finite Element method,” IEEE Transactions on Industry Applications, vol. 49, No. 5, pp. 3672-3678, Sep/Oct 2013. (Prize Paper recognized by IEEE IAS Electric Machines Committee)

Selected Conference Papers:

  • M. T. Fard, J. He, M. Sadoughi, B. Mirafzal and F. Fateh, "Smart Coils for Mitigation of Motor Reflected Overvoltage Fed by SiC Drives," 2023 IEEE Applied Power Electronics Conference and Exposition (APEC), Orlando, FL, USA, 2023, pp. 1429-1436.
  • B. Luckett and J. He, "Reliability-Oriented Multi-Objective Design Optimization of Electric Aircraft Propulsion Drives," 2022 IEEE Energy Conversion Congress and Exposition (ECCE), Detroit, MI, USA, 2022, pp. 1-7.
  • R. Ilka, J. He, W. Yin, J. E. Contreras and C. G. Cavazos, "Multi-Physics Modeling and Simulation of Oil-Immersed Power Transformers Based on 3D Finite Element Analysis and Finite Volume Method," 2022 IEEE Industry Applications Society Annual Meeting (IAS), Detroit, MI, USA, 2022, pp. 1-6.
  • J. M. Taylor, M. T. Fard and J. He, "A Multifunctional T-Type 4-Leg Inverter for Various Operation Modes of Electric Aircraft Propulsion," 2022 IEEE Transportation Electrification Conference & Expo (ITEC), Anaheim, CA, USA, 2022, pp. 1205-1210.
  • B. Luckett and J. He, "Multi-Objective Design Optimization of Electric Aircraft Propulsion Power Converters," 2022 IEEE Transportation Electrification Conference & Expo (ITEC), Anaheim, CA, USA, 2022, pp. 456-461.
  • M. T. Fard and J. He, "Fault Tolerant Five-Level Active NPC Inverter for High-Reliability Photovoltaic Applications," 2021 IEEE 13th International Symposium on Diagnostics for Electrical Machines, Power Electronics and Drives (SDEMPED), 2021, pp. 395-400.
  • P. Roy, J. He and A. Cramer, "Three-Port Multilevel Converter for Hourly Dispatching Solar PV Power with Battery Energy Storage System," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 489-496.
  • M. T. Fard and J. He, "Comparison of Medium-Voltage High-Frequency Power Inverters for Aircraft Propulsion Drives," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 1599-1605.
  • P. Roy and J. He, "Economic Analysis for Hourly Dispatching Wind Energy Power Using Battery and Supercapacitor Hybrid Energy Storage System," 2021 IEEE Energy Conversion Congress and Exposition (ECCE), 2021, pp. 30-36.
  • B. Luckett and J. He, "Comparative Investigation of SiC Current Source Converter and Matrix Converter Topologies for Medium-Voltage Electric Aircraft Propulsion," 2021 IEEE Transportation Electrification Conference & Expo (ITEC), 2021, pp. 641-646.
  • J. Liu, J. He, B. Chen, Y. Zhang and F. Qiu, "Grid Transient Stability Improvement with Increased PV Availability: A PV Inverter Reliability Enhancement Approach," 2021 IEEE 12th International Symposium on Power Electronics for Distributed Generation Systems (PEDG), 2021, pp. 1-6.
  • P. Roy and J. He, "Hourly Dispatching Utility-Scale Solar PV Power with Megawatt Multilevel Grid Inverter," 2021 IEEE Kansas Power and Energy Conference (KPEC), 2021, pp. 1-6.
  • T. Arvin, J. He, N. Weise and T. Zhao, "Modeling and Simulation of a 20kV Ultra-Fast DC Circuit Breaker for Electric Shipboard Applications," 2020 IEEE Transportation Electrification Conference & Expo (ITEC), Chicago, IL, USA, 2020, pp. 795-801.
  • M. T. Fard, J. He and Z. Wang, "Fault Diagnosis and Fault-tolerant Operation of Current Source Inverter for Safety-Critical Applications," 2020 IEEE Transportation Electrification Conference & Expo (ITEC), Chicago, IL, USA, 2020, pp. 925-929.
  • Y. Zhang, O. Akeyo, J. He and D. M. Ionel, "On the Control of a Solid State Transformer for Multi-MW Utility-Scale PV-Battery Systems," 2019 IEEE Energy Conversion Congress and Exposition (ECCE), Baltimore, MD, USA, 2019, pp. 6481-6486.
  • Y. Zhang, J. He and D. M. Ionel, "Modeling and Control of a Multiport Converter based EV Charging Station with PV and Battery," 2019 IEEE Transportation Electrification Conference and Expo (ITEC), Detroit, MI, USA, 2019, pp. 1-5.
  • J. He, D. Zhang, and D. Pan, “A Novel PWM Strategy for SiC Three-Level Active Neutral Point Clamped Converter,” 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, Oregon, Sept. 2018.
  • D. Zhang, J. He, and D. Pan, “A Megawatt-Scale Medium-Voltage High Efficiency High Power Density "SiC+Si" Hybrid Three-Level ANPC Inverter for Aircraft Hybrid-Electric Propulsion Systems” 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, Oregon, Sept. 2018.
  • J. He, C. Li, A. Jassal, N. Thoagarajan, Y. Zhang, S. Prabhakaran, and X. Kang, “Multi-Domain Design Optimization of dv/dt Filter for SiC-based Three-Phase Inverter in High-Frequency Motor-Drive Applications,” 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, Oregon, Sept. 2018.
  • H. Chen, J. He, N. Demerdash, and H. Koti, “Diagnosis of Open-Phase Faults for a Five-Phase PMSM Fed by Closed-Loop Controlled Drives Using Pendulous Oscillation Phenomenon,” IEEE Industry Application Society (IAS) Annual Meeting, Portland, Oregon, Sept. 2018.
  • Y. Zhang, J. He, S. Padmanaban and D. M. Ionel, “Transistor-Clamped Multilevel H-Bridge Converter in Si and SiC Hybrid Configuration for High-Efficiency Low-Power Photovoltaic Applications”, 2018 IEEE Energy Conversion Congress and Exposition (ECCE), Portland, Oregon, Sept. 2018.
  • J. He, D. Zhang, D. Torrey, “Recent Advances of Power Electronics Applications in More Electric Aircrafts,” 2018 AIAA/IEEE Electric Aircraft Technologies Symposium (EATS), Cincinnati, Ohio, 2018.
  • D. Zhang, J. He, D. Pan, M. Dame, M. Schutten, “Development of Megawatt-Scale High-Efficiency High-Power-Density Power Converters for Aircraft Hybrid-Electric Propulsion Systems,” 2018 AIAA/IEEE Electric Aircraft Technologies Symposium (EATS), Cincinnati, Ohio, 2018.
  • G. Cao, N. Chen, S. Huang, S. Xiao, and J. He, “Nonlinear Modeling of the Flux Linkage in Two-Dimensional Plane for the Planar Switched Reluctance Motor,” 2018 IEEE International Magnetics Conference (INTERMAG), Singapore, 2018.
  • Y. Zou, S. Kuruppu, J. He, and B. Cao, “Reliability Improvement of Power Inverters for Low-Speed High-Power Motor Drives,” 2019 IEEE Applied Power Electronics Conference and Exposition (APEC 2019), Anaheim, CA, March 2019.
  • D. Pan, D. Zhang, J. He, C. Immer, and M. Dame, "Pump-Back Validation of a Medium-Voltage High-Frequency "SiC+Si" Hybrid Three-Level ANPC Inverter for Hybrid-Electric Propulsion Application," 2019 IEEE International Electric Machines and Drives Conference (IEMDC), San Diego, CA, May 2019. 
  • J. He, H. Chen, R. Katebi, N. Weise, and N. Demerdash, “Mitigation of Uneven Surge Voltage Stress on Stator Windings of Induction Motors Fed by SiC-MOSFET-based Adjustable Speed Drives,” International Electric Machines and Drives Conference (IEMDC), Miami, FL, May 2017.
  • V. Rallabandi, D. Lawhorn, J. He, and D. M. Ionel, “Current Weakening Control of Coreless AFPM Motor Drives for Solar Race Cars with a Three-port DC/DC Converter,” International Conference on Renewable Energy Research and Applications, San Diego, CA, Nov. 2017.
  • D. Zhang, J. He, and S. Madusoodhanan, “Two-Stage Decoupled 3-Level Active Neutral Point Clamped Converter with SiC MOSFET and Si IGBT,” 2017 IEEE Energy Conversion Congress and Exposition (ECCE), Cincinnati, OH, Oct. 2017.
  • Y. Zou and J. He, “Maximum Power Point Tracking (MPPT) of Sensorless Permanent Magnet Synchronous Generator Wind Power Systems,” 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, September 2016.
  • J. He and N. Demerdash, “An On-Line Diagnostic Method of Open-Circuit Switch Faults in Neutral-Point-Clamped Converters,” 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, 2016.
  • J. He, N. Weise, R. Katebi, L. Wei, and N. Demerdash, “A Fault-Tolerant T-Type Multilevel Converter Topology with Soft-Switching Capability based on Si and SiC Hybrid Phase Legs,” 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, 2016.
  • R. Katebi, N. Weise, A. Stark, and J. He, “Advanced Three Level Active Neutral Point Converter with Fault Tolerant Capabilities,” 2016 IEEE Energy Conversion Congress and Exposition (ECCE), Milwaukee, WI, 2016.
  • Y. Zou and J. He, “Comprehensive Modeling, Simulation and Experimental Validation of Permanent Magnet Synchronous Generator Wind Power System,” IEEE 52nd Industrial & Commercial Power Systems Conference (I&CPS), Detroit, MI, May 2016.
  • J. He, N. Weise, L. Wei, and N. Demerdash, “A Fault-Tolerant Topology of T-Type NPC Inverter with Improved Thermal Overload Capability,” 2016 IEEE Applied Power Electronics Conference and Exposition (APEC 2016), Long Beach, CA, March 2016. (Won Outstanding Presentation Award in APEC 2016)
  • J. He, L. Wei, and N. Demerdash, “Power Cycling Lifetime Improvement of Neutral-Point-Clamped Inverters Used in Adjustable Speed Drives,” 2016 IEEE Applied Power Electronics Conference and Exposition (APEC 2016), Long Beach, CA, March 2016.
  • J. He, Z. Vrankovic, P. Ozimek and C. Winterhalter, “DC-Bus Voltage Pump-Up Caused by Common-Mode EMI in Multi-Drive Systems,” 2016 IEEE Applied Power Electronics Conference and Exposition (APEC 2016), Long Beach, CA, March 2016.
  • T. Zhao and J. He, “An optimal switching pattern for “SiC+Si” Hybrid Device Based Voltage Source Converters,” IEEE Applied Power Electronics Conference and Expo (APEC), Charlotte, NC, March 2015.
  • J. He, A. Fatemi, N. Demerdash, and D. M. Ionel, “Diagnosis of Stator Short-Circuit Faults in Series and Parallel Winding Connections of Current-Controlled Permanent Magnet Synchronous Machines,” IEEE International Electric Machines and Drives Conference (IEMDC), Idaho, May 2015.
  • J. He, T. Zhao, X. Jing, and N. Demerdash, “Application of Wide Bandgap Devices in Renewable Energy Systems - Benefits and Challenges,” International Conference on Renewable Energy Research and Applications (ICRERA), Milwaukee, WI, Oct 2014.
  • J. He, C. Somogyi, A. Strandt, and N. Demerdash, “Diagnosis of Stator Winding Short-Circuit Faults in an Interior Permanent Magnet Synchronous Machine,” 2014 IEEE Energy Conversion Congress and Exposition (ECCE 2014), Pittsburg, PA, Sep. 2014.
  • J. He and N. Demerdash, “Diagnosis of Open-Circuit Switch Faults in Multilevel Active-NPC Inverters,” IEEE Transportation Electrification Conference and Expo (ITEC), Detroit, MI, 2014.
  • M. Li, J. He, and N. Demerdash, “A Flux-Weakening Control Approach for Interior Permanent Magnet Synchronous Motors based on Z-Source Inverters,” IEEE Transportation Electrification Conference and Expo (ITEC 2014), Dearborn, MI, June, 2014.
  • X. Jing, J. He, and N. Demerdash, “Loss Balancing SVPWM for Active Neutral-Point-Clamped Multilevel Converters,” 2014 IEEE Applied Power Electronics Conference and Exposition (APEC 2014), Fort Worth, TX, 2014.
  • J. He, A. Strandt, A. Manarik and N. Demerdash, “Diagnosis of Stator Short-Circuit Faults in an IPM Synchronous Machine Using a Space-Vector Pendulous Oscillation Method,” IEEE International Electric Machines and Drives Conference, Chicago, IL, May 2013.
  • X. Jing, J. He, and N. Demerdash, “Application and Losses Analysis of ANPC Converters in Doubly-Fed Induction Generator Wind Energy Conversion System,” IEEE International Electric Machines and Drives Conference (IEMDC 2013), Chicago, IL, May 2013.
  • N. Huang, J. He, and N. Demerdash, “Sliding Mode Observer Based Position Self-Sensing Control of a Direct-Drive PMSG Wind Turbine System Fed by NPC Converters,” IEEE International Electric Machines and Drives Conference (IEMDC 2013), Chicago, IL, May 2013.
  • P. Zhang, G. Sizov, J. He, D. Ionel, and N. Demerdash, “Calculation of magnet losses in concentrated-winding permanent magnet synchronous machines using a Computationally Efficient - Finite Element method,” IEEE Energy Conversion Congress and Exposition (ECCE), Raleigh, NC, Sept. 2012.
  • J. He, G. Sizov, P. Zhang, and N. Demerdash, “A Review of Mitigation Methods for Overvoltage in Long-Cable-Fed PWM AC Drives,” IEEE Energy Conversion Congress and Exposition (ECCE), Phoenix, AZ, Sep. 2011.