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Title: Power Architecture and Battery Management Systems Research in EVTOLs (Electric Vertical Take-off and Landing)
January 2 @ 4:00 PM - 5:30 PM IST
EE SeminarSpeaker: Prof. Abhijit KulkarniAalborg University, Denmark.Title: Power Architecture and Battery Management Systems Research in EVTOLs (Electric Vertical Take-off and Landing)Date: Tuesday, 2nd January 2024Time: 4.00 pmVenue: EE MMCR (C241)Power Architecture and Battery Management Systems Research in EVTOLs (Electric Vertical Take-off and Landing)Abstract:Urban air mobility (UAM) is an emerging mode of transportation that aims to reduce the traffic congestion using green technologies, which will also reduce environmental pollution. In this presentation, we will discuss the energy storage system and the power architecture for electric vertical take-off and landing (eVTOL) aircraft, which are popularly under development for UAM. The energy storage system comprising of the Li-ion batteries need to be sized optimally and operated to maximize their cycle time. The presentation introduces the sizing details and a reconfigurable battery architecture that paves the way to optimize and improve the operation of the batteries for different flight conditions. The sizing/configuration of the battery packs has an impact on the dc bus voltage, drive train topology and system weight. In this presentation, an optimization method is discussed to select the dc bus configuration that improves the efficiency and payload capacity of the eVTOL.The safe operation of an eVTOL energy system is dependent on the battery management system used. In this presentation, the importance of battery impedance and a novel method to extract battery temperature using online impedance measurement is discussed. A low-complexity method is introduced to develop the battery equivalent circuit model online, that can be used as a digital twin within the battery management system for system diagnostics and protection.Biography of the speaker:Abhijit Kulkarni received the Ph.D. degree in electrical engineering from the Department of Electrical Engineering, Indian Institute of Science, Bengaluru, India, in 2016. From July 2016 to July 2017, he was a Post-Doctoral Research Associate with the University of Illinois at Chicago, Chicago, IL, USA. Subsequently, he worked as a Scientist with Honeywell Technology Solutions Lab. Pvt. Ltd., Bengaluru. He is currently an Assistant Professor at Aalborg University, Denmark.All are welcome.