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High-Density Motor Drive Design for Electric Aircraft Propulsion: What We Might Know and What We Don't
This webinar is being jointly sponsored by the IEEE Power Electronics Society Technical Committee on Aerospace Power and the IEEE Transportation Electrification Community
Tuesday, 13 April 2021 11:00 AM ET
Presenter: Fang Luo, Stoney Brook University, USA
Abstract: In this webinar, the presenter will share his experience and questions in high-density motor drive development for All-Electric Aircraft systems from an academic point-of-view. The first part of the presentation will briefly cover converter development efforts in both non-cryogenic and cryogenic power system configurations. It will provide an architectural comparison for motor drives in such systems. The second part of the presentation will use examples from the presenter’s development to elaborate on co-design/co-optimization efforts to achieve high power-density and efficiency for the propulsion motor drives. These efforts include converter-level and component-level optimization/advancement, as well as power module packaging. The last part of the presentation will briefly introduce the modeling, testing, and analysis of the “side-effects” for the power electronics in electric aircraft propulsion systems, including partial discharge, EMI/EMC, and reflected wave influences, in such a compact, high-power application environment. Through this webinar, the audiences can expect a comprehensive overview of this emerging application and spark more innovative ideas to advance the state-of-the-art for modern power electronics.
Biography: Dr. Fang Luo (S’06- M’10- SM’13) is a new Empire Innovation Associate professor at SBU with his background in power electronics. He was an Assistant Professor in the Electrical Engineering Department at the University of Arkansas (17’-20’) and a research assistant professor at the Ohio State University. His research interests include high power-density converter design, high-density EMI filter design and integration, and power module packaging/integration for wide band-gap devices.
He is the lead PI of the high voltage SiC module-packaging supported by ARL. His research for electric aircraft propulsion has been supported by NSF POETS-ERC, FAA, and NASA, totaling $1.2M. He is a co-pi in The Center for High-Efficiency Electrical Technologies for Aircraft (CHEETA), which is a NASA University Leadership Initiative, with his research focus on the cryogenic-cooled motor drive system. He was the lead PI for the “Turbo-electric propulsion for aircraft systems” project funded by Ohio-Federal Research Network.
Dr. Luo is a senior member of IEEE, a member of AIAA and ASME. He holds two US patents and has authored/co-authored more than 20 journal papers and more than 50 peer-reviewed conference papers. He is an Associate Editor of IEEE Transactions on Power Electronics and International Transactions on Electrical Energy Systems. He is a recipient of NSF CAREER Award.
EMI Reduction Techniques for Automotive Power Conversion Systems
This webinar is being sponsored by the IEEE Power Electronics Society Young Professionals
Thursday, 22 April 2021 10:00 AM ET
Presenter: Pradeep Shenoy, Texas Instruments, USA
Abstract: This presentation addresses the unique challenges of designing power converters to pass automotive EMI/EMC limits. CISPR 25 is the typical starting point for evaluating conducted and radiated emissions in automotive systems. This presentation provides background information on the CISPR 25 standard and explains common noise sources in power converters. Several popular techniques to reduce conducted and radiated emissions are introduced including input filter design, frequency selection, mode selection, snubber design, shielding and layout. Measured results from a 13.5 V input to a 3.3 V, 5 A output converter case study compares the relative effectiveness of several EMI mitigation techniques and present a path to passing CISPR 25 Class 5 conducted emissions. While this talk focuses on automotive applications, the general concepts and techniques are widely applicable.
Biography: Pradeep Shenoy leads Texas Instrument’s Power Design Services team focused on the automotive, telecommunications, and enterprise computing markets. Pradeep has served in several roles in the IEEE Power Electronics Society including Associate Editor for the IEEE Transactions on Power Electronics, Ad-Com Member-at-Large, Young Professionals Chair, Industry Advisory Board, Chapter Chair, and Regional Chair. He is active in the Applied Power Electronics Conference (APEC) organizing committee and served as a DC-DC Converter Track Chair for several years. Pradeep obtained the B.S. degree from the Illinois Institute of Technology, Chicago, and the M.S. and Ph.D. degrees from the University of Illinois, Urbana-Champaign. He received various awards including the Illinois International Graduate Achievement Award in 2010, the Jack Kilby Award for Innovation in 2015, and Richard M. Bass Outstanding Young Power Electronics Engineer Award in 2020.
Machine Learning Enabled Design Automation and Optimization for Electric Transportation Power Systems This webinar is being sponsored by the IEEE Power Electronics Society DMC
Thursday, 29 April 2021 1:30 PM ET
Presenters: Yue Cao, Oregon State University & Jana Doppa, Washington State University, USA
Abstract: This talk presents an automated design and optimization framework enabled by machine learning (ML) for electric transportation power systems. As these systems become increasingly complex and involve the co-design of multiple inter-dependent subsystems and components, a large amount of engineering time and effort is required to explore all possible designs due to large design spaces. Multi-physical domain models and simulations, essential to measure a given design’s performance, are typically computationally expensive to run – sometimes taking hours to days, depending on the system complexity. Providing an approach to drastically simplify this process – as in time and cost reduction – will allow faster and cheaper research and development throughout the transportation sector. Synergistic integration of advances in machine learning with physical domain knowledge paves one feasible pathway to practically realize this vision. Bayesian optimization (BO) is an effective machine learning framework to solve design automation problems with expensive experiments. This paper proposes a novel BO algorithm referred to as Max-value Entropy Search for Multi-objective Optimization with Constraints (MESMOC) to solve multi-objective optimization (MOO) problems with black-box constraints that can only be evaluated through design simulations. The key idea is to build statistical models of both design objectives and constraints, and use them to intelligently select the sequence of designs for evaluation based on the principle of output space entropy search – maximize the information gain about the optimal Pareto front – to efficiently uncover (approximate) Pareto optimal designs. MESMOC is capable of drastically reducing the number of design simulations to discover a high-quality Pareto front. A heavy-duty vertical-takeoff-landing (VTOL) unmanned aerial vehicle (UAV) power system is selected to demonstrate the effectiveness of the ML-based MESMOC algorithm. In several experimental trials, the ML algorithm uncovered the entire optimal Pareto front while only exploring ~4% of the design space. The proposed ML algorithm, when compared to a popular genetic algorithm, showcases superior performance.
Biography: Dr. Yue Cao is an Assistant Professor in the Energy Systems Group at Oregon State University (OSU). Before joining OSU, he was a research scientist on the propulsions team at Amazon Prime Air in Seattle, WA. He has been a power electronics engineer intern with special projects group at Apple Inc., Halliburton Company, Flanders Electric, and Oak Ridge National Laboratory. His research interests include power electronics, motor drives, and energy storage with applications in transportation electrification and renewable energy integration.
Dr. Cao received M.S. and Ph.D. (2017) in Electrical Engineering from the University of Illinois at Urbana–Champaign (UIUC), and B.S. in electrical engineering and mathematics from the University of Tennessee, Knoxville. Dr. Cao is the Tutorials Chair of ECCE 2021. In 2020, he established a joint IEEE PES/PELS Chapter at OSU. He is currently an Associate Editor for IEEE Transactions on Transportation Electrification.
Biography: Dr. Jana Doppa is a George and Joan Berry Chair Associate Professor in the School of Electrical Engineering and Computer Science at Washington State University (WSU), Pullman. He earned his PhD with the Artificial Intelligence group at Oregon State University (2014); and his M.Tech from Indian Institute of Technology (IIT), Kanpur, India (2006). His general research interests are in the broad field of Artificial Intelligence (AI), where he focuses on machine learning, and data-driven science and engineering for application domains including electronic design automation, computer architecture, material science, and agriculture.
Dr. Doppa received the NSF CAREER Award (2019), a Google Faculty Research Award (2015), and the Outstanding Innovation in Technology Award from Oregon State University (2015). Dr. Doppa is an elected editorial board member of the Journal of Artificial Intelligence Research.
Opportunities, Challenges and Potential Solutions in High-frequency SiC Motor Drives
This webinar is being sponsored by the IEEE Power Electronics Society Technical Committee on Electrical Machines, Drives and Automation
Thursday, 6 May 2021 10:00 AM ET
Presenter: Xibo Yuan, University of Bristol, United Kingdom
Abstract: The fast-switching speed, higher voltage and higher temperature capabilities of SiC power devices have brought in clear opportunities in achieving high-density, higher-efficiency, higher-frequency and highly-integrated motor drives. This webinar will first provide an overview of the performance of state-of-the-art SiC devices and converters and their applications in motor drive area. Then, the issues due to high frequency switching and their impact on electric machines will be explained. For example, high dv/dt and high switching frequency can cause increased level of motor over-voltage, insulation and bearing degradation and electro-magnetic interference. Under the high dv/dt of SiC drives, motor terminals will see clear over-voltage with much shorter cables than that under Si IGBT motor drives and the voltage stress will mostly drop on the first several turns of the motor windings. How the switching speed and switching frequency will affect the winding insulation (e.g. partial discharge) and motor bearing current will be explained. Experimental test results with SiC motor drives will be given and the theory behind the experimental observations will be provided. Several potential solutions in addressing the above negative side-effects of high-frequency SiC drives will be discussed, including filters, waveform shaping through soft-switching and gate drive, alterative converter topologies, quasi-multilevel modulation, etc. A couple of SiC motor drive examples and research projects in this area will also be presented to further demonstrate the opportunities, challenges and potential solutions mentioned above.
Biography: Xibo Yuan (Senior Member, IEEE) received the Ph.D. degree from Tsinghua University in 2010. He has been a Professor since 2017 in the Electrical Energy Management Group, Department of Electrical and Electronic Engineering, University of Bristol, Bristol, U.K, where he became Lecturer, Senior Lecturer and Reader in 2011, 2015 and 2016, respectively. He also holds the Royal Academy of Engineering/Safran Chair in Advanced Aircraft Power Generation Systems. He is an executive committee member of the UK National Centre for Power Electronics and the IET Power Electronics, Machines and Drives (PEMD) network. His research interests include power electronics and motor drives, wind power generation, multilevel converters, application of wide-bandgap devices and more electric aircraft technologies. Professor Yuan is an Associate Editor of IEEE Transactions on Industry Applications and IEEE Journal of Emerging and Selected Topics in Power Electronics. He is a Fellow of IET and received The Isao Takahashi Power Electronics Award in 2018.
This webinar is jointly sponsored by the IEEE Transportation Electrification Community and the IEEE Power Electronics Society Technical Committee on
Electrical Machines, Drives and Automation and IEEE Power Electronics Society Technical Committee on Emerging Power Electronic Technologies
Tuesday, 18 May 2021 11:00 AM ET
Presenter: Brij N. Singh, John Deere, USA
Abstract: In this lecture, a broad review of vehicles for farming operation will be given starting from tillage to crop harvesting. Vehicles that have significant use of power electronics will be covered such as Exact-Emerge Planter for seeding operation followed mention of Exact-Apply for crop care and management of plants (corns etc.) that are nutrient deficient. This will lead discussions towards how power electronics supports crop-care system to exactly apply prescription such as fertilizers, pesticides, fungicide, etc. Discussions of this lecture are targeted to create awareness among power electronics and engineering professionals that how your vocation could enable putting food on plate of 9 billion people by 2050 and provide them shelter and transportation infrastructure. This lecture would also cover how electrification is becoming enabling technology in off-road heavy-duty vehicle space. Discussions of this lecture will cover that how wide bandgap (WBG) power electronics could enable many functions, forms, and features in heavy-duty off-road vehicles such as equipment required for agriculture, construction, and mining operations. The Silicon Carbide (SiC) and Gallium Nitride (GaN) based power electronics indeed could offer system level solution that are performance-superior and cost-competitive compared to state-of-art silicon semiconductor-based power electronics. These system approaches will be mentioned in midst of this presentation.
Biography: Dr. Brij N. Singh is a Technical Fellow - Power Electronics Engineering in John Deere USA. He has earned BE from MMM Technical University, Gorakhpur, ME from IIT Roorkee, and Ph.D. from IIIT Delhi, all in Electrical Engineering.
In 1996, Dr. Singh joined the ÉTS Québec, Montreal as a Post-Doctoral Fellow. In 1999, he joined Concordia University, Montreal, as a Research Fellow. In 2000, he joined the Department of Electrical Engineering and Computer Science, Tulane University, New Orleans, as an Assistant Professor.
In 2007, Dr. Singh has joined John Deere USA as a power electronics staff engineer, where presently he holds the position of Region 4 Manager External Relationships.
Dr. Singh has published over 90 research papers, he has 28 approved US patents, one trade secret, and over a dozen pending patents.
In Tulane University, Dr. Singh has won four IEEE Eta Kappa Nu teaching awards for outstanding instructions in electrical engineering. In John Deere, he has won three innovation and one collaboration awards for new product and technology development work. He is the winner of the 2020 IEEE Power Electronics Emerging Technology Award. He is a senior member of the IEEE and is selected to serve as IEEE PELS Distinguished Lecturer for 2021-2022. He lives with his family in West Fargo, North Dakota, USA.
This webinar is sponsored by the IEEE Power Electronics Society Technical Committee on Electrical Machines, Drives and Automation
Tuesday, 29 June 2021 11:00 AM ET
Presenter: Dr. Uday Deshpande, D&V Electronics, USA
Abstract: In this webinar, the presenter will his experience and thoughts on the use of electric motor emulators for testing and validation of inverters.
The first part of the presentation will cover an overview of typical test and validation elements and steps and some of the trends considering increasing electrification and growth of electric vehicles. The second part of the presentation will discuss the essential elements of an electric motor emulator, how it can be used for testing an inverter in lieu of a conventional dyno, typical tests that can be done using an emulator test system including performance, durability, environmental, that address functionality and compliance. The third part of the presentation will cover challenges and considerations that need to kept in mind as people consider using emulator-based test systems. We will look at motor models and real-time implementation, considerations to ensure high fidelity representation of motor behavior, means and mechanisms to study faulted behaviors. Through this webinar, the audiences can expect an in-depth overview of this fast-growing approach to improve test efficiency and effectiveness and spark ideas and discussions to continuously improve design and development cycles.
Prior to joining D&V, Dr. Deshpande held global engineering leadership positions in companies such as CNH Industrial, Ingersoll Rand, General Atomics, Black & Decker. He has worked on projects from electric power steering to electric drivetrain in automotive, on electromagnetic aircraft launch and recovery systems, electrification and autonomy for agriculture equipment, connected products and services. His areas of technical focus are electrical and electromechanical systems and their applications.
Dr. Deshpande has been active in the IEEE Industry Application and Power Electronics societies and part of organizing and steering committees of several conferences including Co-General Chair of the ECCE 2011 conference. He is the past Chair of the Industrial Drives Committee of the IEEE IAS and TC3 Motors, Drives & Actuators technical committee of the IEEE PELS and is an Associate Editor of the Transactions in Power Electronics.
Dr. Deshpande received his B. Tech. (Hons.) degree from the Indian Institute of Technology, Kharagpur, India and the MS and PhD degrees from the University of Kentucky, USA, all in Electrical Engineering.
Dr. Deshpande has several patents and publications to his name and is a Senior Member of IEEE.
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