Format: Zoom https://tennessee.zoom.us/j/91710106815 Title: Wide Bandgap (WBG) Power Electronics Systems for Heavy-Duty Vehicles Presenter: Dr. Brij N. Singh, John Deere, PELS Distinguished Lecturer Abstract: This presentation will cover publicly known information on the 200 kW 1050 VDC silicon carbide (SiC) inverter technology development project in John Deere. The SiC inverter converts vehicle engine power into electrical power needed for the permanent-magnet-motor based electric powertrain used in heavy-duty construction and mining vehicles. The presentation will cover design, development, and test verification of WBG technology deployed in the successful realization of a power-dense (43 kW/Liter) high-temperature (suitable for 115°C coolant) high-efficiency (> 98% over entre range of coolant) SiC dual-inverter. Biography: Dr. Brij N. Singh is a Technical Fellow – Power Electronics Engineering in John Deere Inc., USA. He has earned BE degree in Electrical Engineering from Madan Mohan Malviya Technical University, Gorakhpur, ME degree from Indian Institute of Technology Roorkee, and Ph.D. degree from Indian Institute of Technology, New Delhi, India. In 1996, Dr. Singh joined the École de Technology Supérieure, Université du Québec, Montreal, QC, Canada, as a Post-Doctoral Fellow. In 1999, he joined Concordia University, Montreal, QC, Canada as a Research Fellow. In 2000, he joined the Department of Electrical Engineering and Computer Science, Tulane University, New Orleans, Louisiana, as an Assistant Professor. In 2007, Dr. Singh has joined John Deere Inc., USA as a power electronics staff engineer, where he has led and supported power electronics technology development projects for 644 and 944 hybrid loaders’ electrification. In 2011, he joined John Deere Advanced Technology Department and has executed R&D projects related to high-temperature power-dense high-efficiency power electronics systems including wide bandgap (WBG) power conversion technologies. In September 2020, Dr. Singh was named as the John Deere Region 4 Public Funding Manager with job title as R4 Manager External Relationships. As the R4 Manager External Relationships, Dr. Singh is tasked to lead John Deere Emerging Technology projects including successful execution of government and non-government funded projects in collaboration with universities, government labs, non-Deere industries. Emerging Technology projects led by Dr. Singh are likely to be applicable to John Deere Tech Stack, Production Systems, Product Lifecycle Systems, Construction and Road Building. Various projects led by Dr. Singh are destined to reduce greenhouse gas emission and carbon footprint reduction, resulting in a sustainable environment for the society. Dr. Singh has published over 90 research papers in various Journals including IEEE Transactions and IET Journals. He has 28 approved US patents, one trade secret, and over a dozen pending patents. In Tulane, Dr. Singh received four IEEE/Eta Kapa Nu teaching awards for outstanding instructions in electrical engineering. In John Deere, he has received three innovation and one collaboration awards for product and technology development works. Dr. Singh is the winner of the 2020 IEEE Power Electronics Emerging Technology Award. In Feb 2020, Dr. Singh was awarded the “Title of John Deere Fellow” for exemplary contributions to the power electronics engineering. He is a senior member of the IEEE and lives with his family in West Fargo, North Dakota, USA. Speaker(s): Brij Singh, Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/310691

Sepsis is a life-threatening medical condition that, if not treated promptly, can result in tissue damage, organ failure, and death. According to the Centers for Disease Control, about 270,000 individuals die of sepsis in the US each year. Further, sepsis expenditures accounted for 13% of total US hospital costs in 2013, totaling more than $24 billion. Our project objectives were to determine if Machine Learning algorithms could reliably predict hospital stay duration for patients with sepsis. The data set we used has been de-identified and is freely available through the BupaR package. The data includes 1050 cases, 15214 events, and 16 types of actions related to sepsis patient care. First, we used process mining to determine how long each patient was in the hospital. Using BupaR’s functions, we created several process model graphs. These process models depict the movement of patients at a hospital and provide duration data for each patent case. Second, we identified outlier data and created two dataset versions: one with and one without outliers. We then applied the following analysis methods: Linear Regression, Random Forest, K-Nearest Neighbors, Neural Networks, XGBoost, and lightGBM. We compared the model validations for the six machine learning models using the same data-splitting method. We found that the XGBoost model had the best prediction accuracy of 73.9 percent for cases with outliers, and 79 percent for cases without outliers. We also found that the lightGBM model had the lowest mean absolute error between prediction and actual duration in days with 3.66 days for the case with outliers, and 2.4 days for the case without outliers. These two models outperformed the other four models. This work will be enhanced in the future by exploring new prediction algorithms and comparing them with the results of this study. Speaker(s): Hilda Klasky, Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/309960

Reliability of electricity networks relays on connected apparatus. Transient events such as switching operations and faults result in complex phenomena involving the interaction of connected devices, often leading to overcurrent and overvoltage. In the seminar, an overview of typical transient events will be provided. An impact on the selected equipment and examples of mitigation strategies based on practical examples will be given. Wojciech Piasecki was born in Poland on May 15,1966. He received the M.Sc. degree in electronics from the University of Science and Technology, in Cracow Poland, and the Ph.D. degree in Biophysics from the Jagiellonian University, Cracow. Since 1998 he has been working at the ABB Corporate Research Center in Cracow, focusing on electromagnetic transient phenomena in electrical networks and on high-frequency and nonlinear modeling of electrical equipment. Currently holds a position of a Senior Principal Scientist in the area of electromagnetic design of electrical apparatus. Wojciech is an IEEE Senior Member. PDH credits will be provided upon payment of USD 5 or above along with the registration. Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/307482

Abstract: With increase percentage of inverters in the power system, the topic of grid forming inverters is becoming more popular. This presentation will provide details on characteristics of grid forming inverters, ways to model them across different simulation domains, understanding the stability of these resources and conceptual similarities across different types of grid forming controls, and observing applications under different scenarios. Bio: Deepak Ramasubramanian is a Technical Leader at the Electric Power Research Institute (EPRI). He joined EPRI in 2017 after obtaining his Ph.D. degree from Arizona State University and his Master degree from the Indian Institute of Technology Delhi in 2013. His research work is in the field of modeling and control of large power systems with high percentage of inverter based generation and load. PDH credits are available at a fee of $5. Fee is not mandatory if participants are not interested in PDH credits. Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/311804

Abstract: With the ever-increasing penetration of power-electronic (PE)-based resources in the power grid, a paradigm shift in planning and operations is required to maintain reliable operation of future power grids. In this talk, some of the challenges in future power grids with large-scale PE-based resources will be discussed along with the advances made in simulation algorithms to enable improved planning of future power grid and design of PE-based resources. The control algorithms evaluated on PE-based resources as use cases of the simulations will be discussed that can improve reliability of future power grids. Bio: Suman Debnath received his bachelors and masters from Indian Institute of Technology Madras (IIT Madras) in 2010, and doctoral degree from Purdue University in 2015. He has since been working with Oak Ridge National Laboratory and is a research and development (R&D) staff over there. He has published over 25 publications and has been awarded several projects worth millions. His research interests include applied mathematics for simulation, modeling, and control of power electronics in various applications (including high-voltage direct current systems, wind, PV, high-power drives, among others). PDH credits are available at a fee of $5. Fee is not mandatory if participants are not interested in PDH credits. Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/311871

This presentation will discuss publicly known information related to John Deere project funded by the US DOE-PowerAmerica. Through PowerAmerica, John Deere has formed a collaboration with researchers from the US Department of Energy National Renewable Energy Laboratory to develop a 200 kW 1050 VDC silicon carbide (SiC) dual-inverter. The SiC inverter converts vehicle engine power into electrical power needed for the permanent-magnet-motor based powertrain used in heavy-duty construction and mining vehicles. The presentation will cover development and test verification of various technologies deployed in the successful realization of a power-dense (43 kW/Liter) high-temperature (suitable for 115°C coolant) high-efficiency (> 98% over entre range of coolant) SiC dual-inverter. Test results from various generations of the SiC inverter will be presented. North Dakota-based John Deere Intelligent Solutions Group (JD ISG) has successfully demonstrated the SiC inverter in the JD 644K hybrid Loader, while inverter cooled with the engine radiator fluid. The DOE-PowerAmerica funding has greatly helped John Deere to accelerate the development of SiC inverter technology including realization of key commercialization objectives. PDH credit $5 fee is charged at time of registration Speaker(s): Brij N. Singh, Ph.D. , Agenda: 9:00am - 9:15 am Welcome & Agenda 9:15am - 10:15am Brij N. Singh, Ph.D. John Deere Fellow, IEEE Fellow, and IEEE PELS DL Virtual: https://events.vtools.ieee.org/m/311324

This presentation will focus on the various options for DC powering of Data Center equipment that have been deployed around the world. It will explore the pros and cons of each of these options, and compare them to traditional Data Center AC UPS backup powering. Energy efficiencies will be discussed as well as costs and availability of DC power supplies for data center end-use equipment. Electrical safety will also be discussed as it relates to the various DC architectures, as well as the traditional AC architecture. The session will be open to Q&A. Curtis Ashton is a degreed electrical engineer and a Master Electrician (state of CO) employed as the Training Director by American Power Systems LLC, which is a DC services (battery and DC plant installation and maintenance) company owned by a very large battery manufacturer (lead-acid and Li-ion). In his career, he was previously employed for 27 years by a large telecom company and data center operator (as a power and grounding expert), and was initially employed by an electric utility (as an electrician’s helper and engineering technician) at a coal-fired generating station. Curtis has authored numerous published papers, magazine articles, and is the lead author of several IEEE and ANSI/ATIS standards. He is the immediate past chair of the IEEE PES ESSB (Energy Storage and Stationary Battery) Committee (which is responsible for 38 IEEE standards among other activities it does), and is working group chair, vice-chair or secretary for almost a dozen working groups within IEEE PES ESSB and IEEE-SA SCC 21. Mr. Ashton also serves as a member of the NFPA 855 committee (energy storage system installation). He has presented at conferences around the world, and is the technical committee chair for the annual Battcon conference. In his spare time, he enjoys keeping up his Spanish language fluency, and refereeing high school basketball and soccer. PDH credit $5 fee is charged at time of registration Knoxville, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/311875

The IEEE Chattanooga PES Chapter invites you to join us for a Lunch and Learn to hear David Anderson from Emprimus talk about his company's effots with using neutral blocking technology to protect the electric power grid against the effects of geomagnetic disturbances (GMD) and electromagnetic pulse (EMP). Read more about David and this discussion below. David Anderson currently serves as the COO of Emprimus, a research and development company working with electric power utilities and various departments of the United States to design, patent, build, test and license complete and effective products to protect the electric power grid against the effects of solar storms/geomagnetic disturbances (GMD) and electromagnetic pulse (EMP). Mr. Anderson has more than 10 years of involvement with neutral blocking technology and works with an experienced team and a variety of consultants and suppliers in sensing and control systems as related to the electric utility industry. He is an active participant in the development of technology to protect the power grid. He and his team have been awarded a variety of patents relating to neutral blocking for protection during peak GMD/E3 events as well as methods and devices for E1 (“early pulse”) sensing and triggering to engage protective systems and/or rapidly isolate portions of the electrical grid. Contact: danderson@emprimus.com Webex meeting invite will be sent once registration closes. All proceeds go towards IEEE scholarships for local unviersity students. **1 PDH Available** Webex, Chattanooga, Tennessee, United States, Virtual: https://events.vtools.ieee.org/m/312295