BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//EE - ECPv5.10.0//NONSGML v1.0//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:EE
X-ORIGINAL-URL:https://ee.iisc.ac.in
X-WR-CALDESC:Events for EE
BEGIN:VTIMEZONE
TZID:Asia/Kolkata
BEGIN:STANDARD
TZOFFSETFROM:+0530
TZOFFSETTO:+0530
TZNAME:IST
DTSTART:20220101T000000
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220701T153000
DTEND;TZID=Asia/Kolkata:20220701T163000
DTSTAMP:20260615T134650
CREATED:20220608T224202Z
LAST-MODIFIED:20220608T224347Z
UID:239804-1656689400-1656693000@ee.iisc.ac.in
SUMMARY:Talk by Prof Bikash Pal @10am
DESCRIPTION:2nd talk of the “TCE Lecture Series on Power Systems”\nDate and Time: 1st July\, 2022 from 10 am\nVenue: MMCR\, EE \nTitle: Stability Modelling and Analysis of Converter Driven Power System \nAbstract: The number of power electronics converters connected to electrical networks has been growing exponentially as they are part of all new generation connected to the grid. While the rapid control and fast electronic switching available with this technology offer flexibility in network operation\, the dynamic interactions between several of them threaten the operational stability of the transmission grid is a concern. It is required to develop a methodology for identifying the risks associated with the stability and control interaction before a new power electronic device (e.g. Windfarm\, interconnector\, STATCOM) is introduced to the network \nThe talk will focus on an analytical framework in impedance domain to quantify the interaction between the new plant and the rest of the network for setting additional grid connection study specifications which will include detail technical study to check and mitigate the risks associated with new power electronics interfaced generation. The framework developed is to support MMC technology\, control delay\, system strength and FRT capability of dynamic voltage support devices and windfarm through technical case study conducted at the research group of Bikash Pal at Imperial College London. Future research challenges and opportunities will be highlighted. \nSpeaker Bio: Bikash Pal is a Professor of Power Systems at Imperial College London (ICL). He is research active in power system stability\, control\, and estimation. Currently he is leading a six university UK-China research consortium on Resilient Operation of Sustainable Energy Systems (ROSES) as part of EPSRC-NSFC Programme on Sustainable Energy Supply.  He led UK-China research consortium project on Power network stability with grid scale storage (2014-2017): He also led an eight- university UK-India research consortium project (2013-2017) on smart grid stability and control. His research is conducted in strategic partnership with ABB\, SIEMENS\, GE Grid Solutions\, UK\, and National Grid\, UK. UK Power Networks. SIEMENS R&D collaborated with him to develop fast power flow and volt-var control tools in Spectrum Power\, an advanced module for distribution management system solution from SIEMENS. This is now commissioned in distribution control centres in Columbia\, Bosnia Norway and Azerbaijan serving 15 million customers in these countries.  GE commissioned sequel of projects with him to analyse and solve wind farm HVDC grid interaction problems (2013-2019).  Prof Pal was the chief technical consultant for a panel of experts appointed by the UNFCCC CDM (United Nations Framework Convention on Climate Change Clean Development Mechanism). He has offered trainings in Chile\, Qatar\, UAE\, Malaysia and India in power system protections\, stability and control topics. He has developed and validated a prize winning 68-bus power system model\, which now forms a part of IEEE Benchmark Systems as a standard for researchers to validate their innovations in stability analysis and control design.  He was the Editor-in-Chief of IEEE Transactions on Sustainable Energy (2012-2017) and Editor-in-Chief of IET Generation\, Transmission and Distribution (2005-2012). He is Vice President\, PES Publications (2019-).  In 2016\, his research team won the President’s outstanding research team award at Imperial College London (ICL). He is Fellow of IEEE for his contribution to power system stability and control. He is an IEEE Distinguished Lecturer in Power distribution system estimation and control.  He has published about 125 papers in IEEE Transactions and authored four books in power system modelling\, dynamics\, estimations and control. He was Otto Monstead Professor at Denmark Technical University (DTU) (2019) and Mercator Professor sponsored by German Research Foundation (DFG) at University of Duisburg-Essen in 2011. He worked as faculty at IIT Kanpur\, India. He holds a Visiting Professorship at Tsinghua University\, China.
URL:https://ee.iisc.ac.in/event/talk-by-prof-bikash-pal-10am/
LOCATION:EE\, MMCR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220701T153000
DTEND;TZID=Asia/Kolkata:20220701T163000
DTSTAMP:20260615T134650
CREATED:20220630T023929Z
LAST-MODIFIED:20220630T024500Z
UID:239818-1656689400-1656693000@ee.iisc.ac.in
SUMMARY:2nd talk of the "TCE Lecture Series on Power Systems"
DESCRIPTION:Title: Stability Modelling and Analysis of Converter Driven Power System \nSpeaker: Prof Bikash Pal \nDate and Time: 1st July\, 2022\, 10 am \nVenue: MMCR\, EE \nAbstract:The number of power electronics converters connected to electrical networks has been growing exponentially as they are part of all new generation connected to the grid. While the rapid control and fast electronic switching available with this technology offer flexibility in network operation\, the dynamic interactions between several of them threaten the operational stability of the transmission grid is a concern. It is required to develop a methodology for identifying the risks associated with the stability and control interaction before a new power electronic device (e.g. Windfarm\, interconnector\, STATCOM) is introduced to the network. \nThe talk will focus on an analytical framework in impedance domain to quantify the interaction between the new plant and the rest of the network for setting additional grid connection study specifications which will include detail technical study to check and mitigate the risks associated with new power electronics interfaced generation. The framework developed is to support MMC technology\, control delay\, system strength and FRT capability of dynamic voltage support devices and windfarm through technical case study conducted at the research group of Bikash Pal at Imperial College London. Future research challenges and opportunities will be highlighted. \nSpeaker Bio: Bikash Pal is a Professor of Power Systems at Imperial College London (ICL). He is research active in power system stability\, control\, and estimation. Currently he is leading a six university UK-China research consortium on Resilient Operation of Sustainable Energy Systems (ROSES) as part of EPSRC-NSFC Programme on Sustainable Energy Supply.  He led UK-China research consortium project on Power network stability with grid scale storage (2014-2017): He also led an eight- university UK-India research consortium project (2013-2017) on smart grid stability and control. His research is conducted in strategic partnership with ABB\, SIEMENS\, GE Grid Solutions\, UK\, and National Grid\, UK. UK Power Networks. SIEMENS R&D collaborated with him to develop fast power flow and volt-var control tools in Spectrum Power\, an advanced module for distribution management system solution from SIEMENS. This is now commissioned in distribution control centres in Columbia\, Bosnia Norway and Azerbaijan serving 15 million customers in these countries.  GE commissioned sequel of projects with him to analyse and solve wind farm HVDC grid interaction problems (2013-2019).  Prof Pal was the chief technical consultant for a panel of experts appointed by the UNFCCC CDM (United Nations Framework Convention on Climate Change Clean Development Mechanism). He has offered trainings in Chile\, Qatar\, UAE\, Malaysia and India in power system protections\, stability and control topics. He has developed and validated a prize winning 68-bus power system model\, which now forms a part of IEEE Benchmark Systems as a standard for researchers to validate their innovations in stability analysis and control design.  He was the Editor-in-Chief of IEEE Transactions on Sustainable Energy (2012-2017) and Editor-in-Chief of IET Generation\, Transmission and Distribution (2005-2012). He is Vice President\, PES Publications (2019-).  In 2016\, his research team won the President’s outstanding research team award at Imperial College London (ICL). He is Fellow of IEEE for his contribution to power system stability and control. He is an IEEE Distinguished Lecturer in Power distribution system estimation and control.  He has published about 125 papers in IEEE Transactions and authored four books in power system modelling\, dynamics\, estimations and control. He was Otto Monstead Professor at Denmark Technical University (DTU) (2019) and Mercator Professor sponsored by German Research Foundation (DFG) at University of Duisburg-Essen in 2011. He worked as faculty at IIT Kanpur\, India. He holds a Visiting Professorship at Tsinghua University\, China.
URL:https://ee.iisc.ac.in/event/2nd-talk-of-the-tce-lecture-series-on-power-systems/
LOCATION:EE\, MMCR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220704T133000
DTEND;TZID=Asia/Kolkata:20220708T223000
DTSTAMP:20260615T134650
CREATED:20220604T085147Z
LAST-MODIFIED:20220604T085147Z
UID:239798-1656941400-1657319400@ee.iisc.ac.in
SUMMARY:EE Summer School 2022
DESCRIPTION:Visit https://ee.iisc.ac.in/summerschool2022/ for details
URL:https://ee.iisc.ac.in/event/ee-summer-school-2022/
LOCATION:EE\, IISc
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220712T153000
DTEND;TZID=Asia/Kolkata:20220712T170000
DTSTAMP:20260615T134650
CREATED:20220711T052423Z
LAST-MODIFIED:20220711T052521Z
UID:239825-1657639800-1657645200@ee.iisc.ac.in
SUMMARY:PhD Thesis Colloquium
DESCRIPTION:Name of the student: Tanmay Mishra \nFaculty Advisor: Dr. Gurunath Gurrala \nDate : 12th July 2022 \nTime: 10AM – 11.30AM \nVenue: MMCR\, 1st floor C-wing\, EE Department\, IISc \nAbstract: Studying the dynamic behavior of non-linear complex power systems in a laboratory is very challenging. Early experimental platforms used micro-alternators to emulate the behavior of fixed steam turbine models. The micro-alternator is a three-phase synchronous generator with similar electrical constants (in per unit on machine rating) as those typically found in alternators in large power stations. It is an electrical scaled-down model of machines up to 1000 MW rating and is rated between 1 to 10 kVA. Researchers used these micro-machines up to the 90s to study large electric generators’ transient and steady-state performance. The Department of electrical engineering at the Indian Institute of Science (IISc) was also very active in experimental research in power engineering. The department still retained two-three kVA and one ten kVA micro-machine sets\, but the control panels of these machines became obsolete as the manufacturer of these machines Mawdsley\, London\, doesn’t exist anymore. Advancements in simulation software packages and real-time simulators have primarily replaced the experimental models of electric power systems worldwide. The push for green energy technologies worldwide due to climate concerns has increased the presence of power electronic converters in the power grids. Reduction of overall inertia\, frequent occurrence of electromechanical oscillations\, electromagnetic transients\, and control interaction modes has become a concern for the power grid operators. The need for understanding the physical insights of the oscillatory modes introduced by fast-acting power electronic converters\, the need for developing practically feasible control algorithms for mitigating the interaction modes\, and the need for developing dispatchability and grid support features like conventional generation sources have triggered the development of laboratory-scale experimental power grids across the world in the past decade. \n In this thesis\, initially\, an attempt is made to revive the existing three kVA alternator controls. An IGBT-based buck converter static excitation system has been developed for the micro-alternator. This exciter also incorporates several limiters which were non-existent in the old analog control panels. An under-excitation limiter\, over-excitation limiter\, and V/Hz limiter as per IEEE standard 421.5 have been designed to protect the micro-alternator during abnormal conditions such as overloading\, overheating\, and over-fluxing of the machine. The detailed tuning procedure of limiters and TCR is discussed to comply with IEEE STD 421.2 and IEEE STD 421.5. A digital time constant regulator (TCR) is incorporated to modify the micro-alternator’s field’s time constant to mimic large synchronous machines’ dynamics as micro-machine time constants are very small. A custom 5 kVA micro-alternator was manufactured through a local vendor having parameters like the Mawdsley machines to facilitate the creation of multiple short circuits in the testbed. \nA single micro-alternator can represent only one large alternator dynamics\, thereby limiting the platform’s scalability. Emulating machines of different ratings using a single micro-machine would undoubtedly boost the capabilities of experimental platforms for investigating conventional and nonconventional source interactions in laboratories. To the best of our knowledge\, only one such attempt was made in the literature\, where a model reference control algorithm is proposed to mimic any rating alternator dynamics using a doubly excited laboratory micro-alternator. However\, doubly excited micro-alternators are non-existent today. A generalized experimental platform using a non-linear output matching controller based on output feedback linearization is developed in this thesis for emulation of large turbo-alternators of different ratings\, IEEE STD 421.5 excitation systems\, and standard turbine governor models in the laboratory using the 5 kVA micro-alternator. IEEE Model 1.1 synchronous machine model in per unit on machine MVA rating with associated excitation system and governor-turbine models has been used as a reference model to be emulated. A single machine infinite bus (SMIB) setup with the 5 kVA micro-alternator and a 50 km 220 kV scaled lumped parameter frequency-dependent transmission line model is used for experimental validation. Synchronous generators of ratings\, 128 MVA\, 247.5 MVA\, and 1000 MVA have been physically emulated using the setup. The dynamic responses of the large machines with thermal turbines (reheat\, non-reheat)\, hydro turbine\, and excitation systems; DC1A\, AC4A\, and ST1C have been reproduced under small and large disturbances. \nA systematic scaling approach has been proposed to emulate a multi-machine system in the laboratory. Unlike in the SMIB system\, the power levels of generators in a multi-machine system should be scaled to the laboratory level for emulation. Hence\, every power system component (generator\, transmission lines\, transformer\, loads) is scaled to a uniform level so that the laboratory machines don’t get overloaded. The developed non-linear control strategy for emulation has been extended to multi-machine systems. The Western System Coordinating CouncilJ 3-generator 9-bus test system has been used to validate the proposed concept. The feasibility of replicating WSCC system dynamics in a laboratory as a scaled-down model has been verified through simulations under small and large disturbances. Emulating large machine dynamics with different types of turbines\, governors\, and excitation controls using a singly excited micro-alternator enabling a generalized synchronous machine emulation platform is a first-of-its-kind effort in the literature to the best of our knowledge. \n Note: Know how generated from the Source Emulation has been licensed to MCore Technologies Pvt Ltd\, Bangalore for commercialization. \nAcknowledgments: This work is supported by Fund for Improvement of Science and Technology (FIST) program\, DST\, India\, No.SR/FST/ETII-063/2015 (C) and (G) under the project “Smart Energy Systems Infrastructure – Hybrid Test Bed”.
URL:https://ee.iisc.ac.in/event/phd-thesis-colloquium-2/
LOCATION:EE\, MMCR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220727T203000
DTEND;TZID=Asia/Kolkata:20220727T213000
DTSTAMP:20260615T134650
CREATED:20220726T220023Z
LAST-MODIFIED:20220726T220117Z
UID:239845-1658953800-1658957400@ee.iisc.ac.in
SUMMARY:Lecture by Dr. Mathew Magimai Doss 3.00pm
DESCRIPTION:     Department of Electrical Engineering\, IEEE Signal Processing Society Bangalore Chapter\, and Indian Speech Communication Association (IndSCA) cordially invite you to the following lecture \nTitle: Towards speech-based biomarkers \nSpeaker: Dr. Mathew Magimai Doss\, Idiap Research Institute and EPFL\, Switzerland \nHost: Prof. Chandra Sekhar Seelamantula\, EE\, IISc \nDate and time: July 27\, 2022; 3 PM (Coffee will be served during the talk.) \nVenue: Multimedia Classroom\, Department of Electrical Engineering\, Indian Institute of Science \nAbstract:Speech communication is an essential part of our lives\, which can undergo short-term and long-term changes at paralinguistic level due to several reasons such as\, emotion\, mood\, stress\, drinking\, speech pathology\, neurological speech and language disorders (e.g.\, Parkinson’s Disease (PD)\, Alzheimer’s Diseases). So\, there is a thrust to develop speech-based methods to detect such short-term and long-term changes for clinical applications. In this talk\, I will present a few research and development activities that I am involved in in that direction.Specifically\, I will talk about (a) pathological speech processing\, (b) joint modeling of speech and physiological signals\, and (c) developmentof closed-loop deep brain stimulation with PD patient’s symptoms in loop. \nBiography of the Speaker: Dr. Mathew Magimai Doss received the Bachelor of Engineering (B.E.) in Instrumentation and Control Engineering from the University of Madras\, India in 1996; the Master of Science (M.S.) by Research in Computer Science and Engineering from the Indian Institute of Technology\, Madras\, India in 1999; the PreDoctoral diploma and the Docteur ès Sciences (Ph.D.) from the Ecole polytechnique fédérale de Lausanne (EPFL)\, Switzerland in 2000 and 2005\, respectively. He was a postdoctoral fellow at the International Computer Science Institute (ICSI)\,Berkeley\, USA from April 2006 till March 2007. He is now a Senior Researcher at the Idiap Research Institute\, Martigny\, Switzerland. He is also a lecturer at EPFL. His main research interest lies in signal processing\, statistical pattern recognition\, artificial neural networks and computational linguistics with applications to speech and audio processing and multimodal signal processing. He is a Senior Area Editor of the IEEE Signal Processing Letters. He is also an Associate Editor of the IEEE/ACM Transactions on Audio\, Speech\, and Language Processing. \nAll are invited. \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n  \n 
URL:https://ee.iisc.ac.in/event/lecture-by-dr-mathew-magimai-doss-3-00pm/
LOCATION:EE\, MMCR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220727T223000
DTEND;TZID=Asia/Kolkata:20220727T233000
DTSTAMP:20260615T134650
CREATED:20220726T220657Z
LAST-MODIFIED:20220726T220657Z
UID:239847-1658961000-1658964600@ee.iisc.ac.in
SUMMARY:Lecture by Dr. Prasanth Venugopal @ 5.00pm
DESCRIPTION:Title: SaRe ♫♪♪ Battery Electronics of the Future: Safe and Reliable \nSpeaker: Dr. Prasanth Venugopal\, Assistant Professor\, University of Twente\nDate and Time: 27 July 2022\, 5:00 pm\nVenue: Multimedia Classroom (Hybrid Mode)\, Department of Electrical Engineering\, Indian Institute of Science\nMeeting Link: Click here to join the meeting\n \nAbstract: Li-ion battery (LiB) has disrupted the world of energy storage thereby creating a pathway for a sustainable future relying on intermittent renewable energy sources. It is expected that the market for LiB will exceed 400 GWh per year from 2025 onwards. The talk will summarize an overview of the R&D program at the University of Twente in advanced battery power electronics and battery evaluation. This includes the development of a new generation of advanced BMS concepts based on advanced power electronics. In addition\, an overview will be presented of performance and aging including implications on safety and second-life batteries. \nSpeaker Biography: Prasanth Venugopal received the B.Tech. degree in electrical and electronics engineering from Amrita Vishwa Vidyapeetham University\, Coimbatore\, India\, in 2010\, and the M.Sc. degree in electrical engineering and the Ph.D. degree from the Delft University of Technology\, Delft\, The Netherlands\, in 2012\, and 2018\, respectively. His MSc. and Ph.D. theses were related to wireless charging of EVs. He worked in the semiconductor and passive components industry from 2016-2020 in Munich\, Germany. From November 2016 to December 2018\, he was with Qualcomm Halo\, Munich\, Germany\, as a Senior Electrical Engineer in the field of power electronic systems and applications related to wireless charging of Electric Vehicles. He then went on to work at TDK Europe as a Technical Specialist/Manager for xEV applications until May 2020. From June 2020\, he is appointed as a Tenured Assistant Professor in the Power Electronics and EMC group at U Twente. \nHe has so far published 29 papers with 6 journals and has filed 6 patents which are in various stages of acceptance. His current areas of interest are Electric Vehicles\, Wireless Charging\, Power Electronics Integration – Semiconductors\, and Passive Component Technologies. \n 
URL:https://ee.iisc.ac.in/event/lecture-by-dr-prasanth-venugopal-5-00pm/
LOCATION:EE\, MMCR
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20220729T193000
DTEND;TZID=Asia/Kolkata:20220729T203000
DTSTAMP:20260615T134650
CREATED:20220727T035729Z
LAST-MODIFIED:20220727T035811Z
UID:239849-1659123000-1659126600@ee.iisc.ac.in
SUMMARY:Thesis Colloquium of Mr. Shubham Rawat @ 2.00pm
DESCRIPTION:Title: A Novel Passive Regenerative Snubber for the Phase-Shifted Full-Bridge Converter:  Analysis\, Design and Experimental Verification \nName of the Advisor: Dr Kaushik Basu \nDegree Registered: MTech (Research) \n Date and Time: 29 July 2022\, 02:00 PM  \n Place: MMCR EE \nMeeting Link: Click here to join the meeting \nAbstract: The development of Wide Bandgap (WBG) devices has enabled power electronic converters to operate at much higher frequencies\, voltages and power. Working at a higher switching frequency minimises the size of magnetics but results in significant switching losses and electromagnetic interference (EMI) noise. Thus\, it necessitates the use of soft-switching techniques to reduce these losses. Phase-Shifted Full-Bridge (PSFB) Converter is the most widely used soft-switching topology in the high-voltage and high-power\, unidirectional\, DC-DC conversion. The phase shift PWM control utilises the converter parasitic to achieve zero voltage switching (ZVS) turn ON. The gating technique allows the magnetic energy stored in the leakage inductance of the isolation transformer to charge and discharge the output capacitances of the inverter leg. \nHowever\, the converter suffers from severe voltage overshoots across the rectifier bridge during the zero to the active state transition. The resonant circuit formed between the transformer leakage inductance and the parasitic diode capacitance of the rectifier is responsible for the high-voltage ringing.  Many passive and active snubbers are presented in the literature to mitigate the high voltage overshoots across the diode bridge. While passive snubbers are relatively simple to implement than active snubbers\, they are lossy. On the other hand\, the active snubbers require additional gate driver circuitry and complex control. \nThe first part of the thesis proposes a novel passive regenerative snubber to overcome the mentioned drawbacks of the existing snubbers. The proposed snubber is ideally lossless with no control complexity. The work covers a detailed analysis of the PSFB operation with the proposed snubber while obtaining closed-form expressions for the converter state variables at the end of each topological stage. The study considers all the major converter parasitic\, such as transformer leakage and magnetising inductances\, and parasitic capacitances of the converter. Given the new snubber\, the thesis also lays out a step-by-step PSFB design procedure utilising the analysis carried out in the first part of the work. The design aimed to develop a 100 kHz PSFB for an input voltage of 360-400 V and the output power range of 0.5-1.5 kW at a fixed output voltage of 48 V. The design approach focuses on the two design objectives. All inverter switches must achieve ZVS turn ON\, and the converter gain must achieve the necessary gain to maintain desired constant output voltage for all possible operating conditions. \nA hardware prototype is built and tested per the given specification. The experimental results validate the effectiveness of the snubber in reducing the voltage overshoot. Further\, the analysis and design accuracy is verified using the measured state variables. Finally\, the work presents the overall efficiency and the loss distribution among the converter components.
URL:https://ee.iisc.ac.in/event/thesis-colloquium-of-mr-shubham-rawat-2-00pm/
LOCATION:EE\, MMCR
END:VEVENT
END:VCALENDAR