News

April 17, 2024 -- Congrats to Majid on Passing Dissertation Defense and Lulu on Passing Thesis Defense

Congrats to Majid T. Fard on passing his PhD dissertation defense!! Majid has been working on the topic of "High Reliability Motor-Drive Systems for Electric Aircraft Propulsion". Upon graduation, Majid will join GE Aerospace as a Lead Engineer on Power Electronics. 

Congrats to Lulu Wei on passing her M.S. thesis defense !! Lulu's thesis topic focused on the mitigation of high-frequency reflected surge voltage in wind turbine generator-converter systems. 


April 12, 2024 -- Victor and Grace Received UK-ECE Outstanding Senior Awards

April 12, 2024 -- Undergraduate researchers Victor Logan and Grace Smith from the AMPERE Lab received outstanding senior awards from the UK ECE Department, to recognize their outstanding academic performance.

 

  • Victor received the 2024 Robert L. Cosgriff Award, which is presented to an outstanding senior electrical engineering student who will be immediately pursuing graduate studies following graduation. Victor has been working with Dr. JiangBiao He on lifetime improvement of electric propulsion multilevel converters. Upon graduation, Victor will work as a full-time PhD student and research assistant in the AMPERE Lab. 
  • Grace received the 2024 Electrical Engineering Senior Award. Grace was working on modeling and simulation of EV fast chargers under the supervision of Dr. JiangBiao He. After graduation, she will begin working as an Electrical Engineer for Northrop Grumman. 


Feb. 29, 2024 -- PhD Student Mohamed Metwly Presented NSF-Sponsored Research on Robotic Motor-Drive Reliability at APEC-2024

Feb. 29, 2024 -- Our PhD Student and Research Assistant Mohamed Y. Metwly presented our recent NSF-sponsored research on robotic motor-drive reliability at the 2024 IEEE Applied Power Electronics Conference and Expo (APEC-2024), which was held on Feb. 25-29, 2024, in Long Beach, CA. Also, during APEC-2024, our academic collaborators Prof. Behrooz Mirafzal's team from Kansas State University presented our collaborative work on the mitigation of motor reflected voltages in long-cable-fed SiC motor-drive systems. The author and title information of the two papers is provided as follows. Additionally, our industry partner SanRex Corporation exhibited our patented technology on fault-tolerant multilevel SiC inverter prototype at APEC-2024. APEC is the flagship and the largest IEEE conference in the area of power electronics, with 4000~5000 participants every year.

  • Mohamed Metwly, Landon Clark, Biyun Xie, and JiangBiao He, "Robust Online Diagnosis of Inverter Open-Circuit Switching Faults for Robotic Joints with BLDC Motors," 2024 IEEE Applied Power Electronics Conference and Expo (APEC-2024), Feb. 25-29, 2024, Long Beach, CA.
  • Milad Sadoughi, Arya Sadasivan, Fariba Fateh, JiangBiao He, and Behrooz Mirafzal, "Mitigation of Uneven Overvoltage Distribution in Motor Windings Fed by SiC-Based Drives Using a GaN-Based Adaptive Surge Impedance Method," 2024 IEEE Applied Power Electronics Conference and Expo (APEC-2024), Feb. 25-29, 2024, Long Beach, CA. 


Feb. 24, 2024 -- AMPERE Lab Exhibits Electrified Transportation Technologies to K-12 Students on E-Day

Jan 24, 2024 --  E-Day (Engineering Day) has been an important annual open house day for the Pigman College of Engineering at the University of Kentucky since 1921. Generally, approximately 3,000 people attend the on-campus event, and visitors are free to roam the engineering complex and discover what the world of engineering can offer. For the E-Day this year, our AMPERE Lab demonstrates various electrified transportation technologies to many K-12 students from different areas of the state!

 

(Dr. JiangBiao He and PhD Candidate Farzad Y. Notash are presenting electrified transportation technologies to K-12 Students)

 


Jan 25, 2024 -- New DOE Project to Develop EV Integrated Charger-Inverter System

Jan 25, 2024 -  In collaboration with Western Michigan University (Lead) and Oak Ridge National Lab (ORNL), a new 3-year project was awarded recently by DOE Vehicle Technologies Office (VTO). In this project, we will develop integrated charger-inverter (ICI) technologies that enable existing electric vehicle (EV) inverters to serve as a bi-directional charger, while optimizing the overall system for high efficiency, high power density, and low cost, eliminating the need for on-board or off-board chargers. John Deere Corporation and BorgWarner Inc. serve as the industry advisory partners on this project.

 

 


Dec. 15, 2023 -- Dr. He Leads a JESTPE Special Issue on Digital Twin Driven Power Electronic Systems

Dec. 15, 2023 -- In collaboration with a panel of experts and guest editorial members from various research institutions in the global power electronics community, Dr. JiangBiao He leads a Special Issue on Digital Twin Driven High-Reliability Power Electronic Systems for IEEE Journal of Emerging and Selected Topics in Power Electronics (JESTPE)a flagship journal co-sponsored by IEEE Power Electronics Society (PELS) and Industry Applications Society (IAS).

Welcome to submit your publications to this Special Issue if you are working on the related emerging topics!

 


Nov. 30, 2023 -- PhD Candidate Ben Luckett Presented Research Achievements in IEEE ITEC-AP in Thailand

Nov. 30, 2023 -- Our PhD candidate, Ben Luckett, presented the recent research achievements on power converter multi-objective design optimization in 2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC-AP) which was held in Thailand this year. The information of the two papers is provided below. As a co-author on the two papers, Prof. JiangBiao He serves as a member of the International Steering Committee and the Technical Program Committee (TPC) of the ITEC-AP. 

  • Benjamin Luckett and JiangBiao He, "Genetic Algorithm Enabled Multi-Objective Design Optimization of Current Source Converters for Turboelectric Aircraft Propulsion," 2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC-AP), Nov. 28 - Dec. 1, 2023, Chiang Mai, Thailand.
  • Benjamin Luckett and JiangBiao He, "Fast Calculation of Semiconductor Steady-State Junction Temperatures in Power Converters," 2023 IEEE Transportation Electrification Conference and Expo, Asia-Pacific (ITEC-AP), Nov. 28 - Dec 1, 2023, Chiang Mai, Thailand.


Nov. 2, 2023 -- AMPERE Researchers Present and Exhibit Project Accomplishments at IEEE ECCE-2023 and IASAM-2023

Nov. 2, 2023 -- AMPERE researchers present and exhibit project accomplishments at the 2023 IEEE Energy Conversion Congress and Expo (ECCE) and the 2023 IEEE IAS Annual Meeting, two conferences cohosted together in Nashville, TN. There are totally 8 papers presented and 2 exhibitions/demonstrations given, which are listed as follows. We would like to sincerely acknowledge the great support from NASA (University Leadership Initiative), National Science Foundation (NSF), Office of Naval Research (ONR), Valvoline Global Operations, IEEE Zucker Foundation, and Department of Education (DoEd).

#1: Novel Integrated On-Board Battery Charger for All-Electric Aircraft Based on Multiphase SPM Synchronous Machine 

      Authors: Mohamed Y. Metwly and JiangBiao He

#2: Simplified Fixed Switching Frequency Model Predictive Control for AFPM Motor Drives in Distributed Electric Aircraft Propulsion System

      Authors: Farzad Y. Notash, Benjamin Luckett and JiangBiao He

#3: Multi-Physics Modeling of Power Electronic Converters with Liquid Immersion Cooling

       Authors: Reza Ilka1, Yiju Wang1, JiangBiao He1, Ronak Ali1, Aaron Swartz1, David Chen1, Ning Ren2, Z. George Zhang2, Gefei Wu2, and Roger England2
                     1University of Kentucky;    2Valvoline Global Operations

#4: Performance Analysis of Optimally Designed BLDC Motor Equipped with Different Winding Layouts for Robotic Arms 

      Authors: Mohamed Y. Metwly, Landon Clark, Biyun Xie and JiangBiao He

#5: Digital Twin Health Monitoring of Five-Level ANPC Power Converter based on Estimation of Semiconductor On-State Resistance
      Authors: Majid T. Fard and JiangBiao He

#6: Genetic Algorithm Enabled Multi-Objective Design Optimization of Power Converters for Electric Aircraft Propulsion 
       Authors: Benjamin Luckett and JiangBiao He

#7: Impact of Immersion Cooling on Balancing Semiconductor Thermal Distribution in NPC Multilevel Converters for Transportation Propulsion
      Authors: Reza Ilka1, Yiju Wang1, JiangBiao He1, Ning Ren2, Z. George Zhang2, Gefei Wu2, and Roger England2
                    1University of Kentucky;      2Valvoline Global Operations

#8: Mitigating High-Frequency Overvoltage on Motor Windings: An Adaptive Approach

      Authors: 1Milad Sadoughi, 1Arya Sadasivan, 1Alex Howard, 1Fariba Fateh, 2JiangBiao He and 1Behrooz Mirafzal

                         1Kansas State University; 2University of Kentucky

#9: Student Demonstration: Interactive Multi-Objective Design Optimization of Power Converters (Ben Luckett)

#10: Exhibition: Fault-tolerant 4-Leg T-Type Inverter for Electric Propulsion Applications

      (The inverter prototype and demo video were provided by our AMPERE Lab, and the exhibition was hosted by our industry collaborator SanRex Corporation)


Sept 1, 2023 -- New DOE Project on Multiport Power Converters for PV-Battery-EV Microgrid Power Systems

Sept 1, 2023 -- A new project on the development of high-efficiency galvanic isolated multiport power converter for PV-Battery-EV microgrid power systems was recently awarded by DOE Energy Efficiency and Renewable Energy (EERE) program DE-FOA-0002903. Dr. He serves as the Principal Investigator, in collaboration with Epower Technology, LLC.

Unlike conventional solutions using multiple individual power converters to interconnect various energy sources, this project aims to develop one monolithic power converter with bi-directional power interfaces, so the power can be flexibly controlled through various energy sources, depending on the mission conditions. The proposed power converter concept has the advantages of high energy efficiency, high power density, low cost, galvanic isolation, and bi-directional power control.

  


Aug. 26, 2023 -- Group Hiking and BBQ at Twin Knobs, KY

Aug. 26, 2023 -- To celebrate the new semester and welcome our new team members, researchers at the AMPERE Lab had a great group hiking and barbecue at Twin Knobs, KY.