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X-ORIGINAL-URL:https://ee.iisc.ac.in
X-WR-CALDESC:Events for EE
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TZID:Asia/Kolkata
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DTSTART:20240101T000000
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240806T103000
DTEND;TZID=Asia/Kolkata:20240806T130000
DTSTAMP:20260526T234124
CREATED:20240726T041901Z
LAST-MODIFIED:20240806T050031Z
UID:241500-1722940200-1722949200@ee.iisc.ac.in
SUMMARY:PhD Thesis Defense by Apoorva Sahu
DESCRIPTION:Synopsis \nJoin conversation (microsoft.com) \nThe consumption of crude oil is increasing every day particularly in developing countries like India which is the third largest consumer of crude oil in the world\, utilizing on an average around 160 million liters per annum of which 30% constitutes diesel fuel. More than 50% of the NOx and hydrocarbons in air come from the diesel exhaust affecting the health of human beings\, vegetation\, and environment. While the solid particulate in the exhaust is taken care to a greater extent by the mechanical filters it is the gaseous pollutants such as oxides of nitrogen (NOx)\, oxides of carbon\, hydrocarbons (HC) etc.\, that need to be addressed as they cause several health-related ailments in addition to acid rain\, global warming\, smog etc. It is timely to work on the development of economical and efficient pollution control strategies. On the other hand\, issues that is affecting our country India currently are accumulation of wastes from utility industry\, mariculture industry and agriculture industry. The prominent amongst them are fly ash\, red mud\, foundry sand\, iron ore tailings\, lignite ash\, rice husk\, wheat straw and sugarcane bagasse etc. Accumulation of these wastes are in several million tons per annum in India. Any proposition in recycling waste is a welcoming step. \n  \nEfforts are continuously being made for the past three decades to mitigate these gaseous pollutants\, particularly NOx\, at various levels by changing the fuel composition\, engine modifications\, pre-combustion techniques and post-combustion (aftertreatment) techniques. The existing post-combustion mode technique “catalyst-based converters and adsorbent based techniques” are becoming expensive owing to the short life\, dependency on noble metals\, more vulnerability to acidic coating\, bulk usage of adsorbents etc. In this regard the application of non-thermal plasma or electric discharge plasma for pollution control aided by additional techniques is slowly gaining popularity in the past few years. Discharge plasma ionizes the atoms at normal temperature and atmospheric pressure (NTP) thus creating an oxidative environment resulting in chemical reactions such as reduction\, oxidation\, decomposition etc. However\, among these reactions it was observed that oxidation was dominating\, to a certain extent the oxidised by-products in the plasma appeared to be less hazardous to humans than to nature. This led to the redesigning of plasma reactors with the intention of enhancing the energy in the charged species favoring reduction reactions instead of oxidation ones but not without serious limitations with respect to the gas flow. \n  \nApplication of electrical discharges for environmental purposes lies in the basic concept of treating the pollutants\, particularly the gaseous ones\, with plasma excited species. It is observed that plasma alone is insufficient for the successful treatment of any of the gaseous pollutants due to the oxidative environment prevailing in the discharge plasma at atmospheric conditions. This necessitated inclusion of additional treatment technique along with plasma leading to the origin of plasma catalysis/plasma adsorption methods where in the catalytic materials were kept inside the plasma environment (plasma catalysis) or the adsorbent materials are cascaded with plasma (plasma adsorption). It should be noted here that the total cost involved in the proposed technique\, should be lower than that associated with conventional catalyst-alone or adsorbent-alone techniques so that the proposed ones can be a promising economic alternative to the conventional ones. That said\, cascading commercially available catalysts/adsorbent with plasma can never be a cheaper alternative. Several research works\, therefore\, started by blending plasma with other lab made catalysts/adsorbents but the DeNOx efficiency was not significant. \n  \nPresent work aimed at studying the NOx abatement in diesel engine exhaust at controlled laboratory condition using electrical discharges. The intention of the study is to provide not only an efficient but also an economical solution for reduction of the NOx pollutants. Keeping this in mind\, it was decided to utilize electrical discharge technique in association with abundantly available solid wastes in India be it from industrial\, mariculture or agriculture domains. Given the whole spectrum of parametric variations the thesis plan was carefully drawn to touch upon the following variations: type of corona electrodes\, type of applied high voltage\, type of solid wastes\, type of gas treatment. Four types of electrodes were studied that include needle plate\, metal film\, helical wire and pipe type. Type of voltage involves fast rising repetitive pulses at 80 Hz\, power frequency and high frequency AC. The solid wastes comprise of three categories namely (a) industrial/mariculture wastes that include namely iron tailings\, lignite ash\, red mud\, foundry sand\, waste tiles and copper slag\, oyster shell (b) agricultural wastes including coffee husk\, sugarcane waste\, mulberry husk\, rice husk\, ragi husk\, corn husk\, wheat husk\, pine\, ground nut and areca nut husk and (c) composite wastes which include a blend of waste tiles + foundry sand\, copper slag + red mud\, iron tailings + waste tiles\, red mud + waste tiles\, foundry sand + red mud and foundry sand + iron tailings. The type of gas treatment involves treating the exhaust with only plasma/plasma catalysis/plasma adsorption/thermal catalysis utilizing catalytic properties of metal oxides present in the industry wastes or porous nature of the industry wastes. A comparison was also made by replacing the industrial wastes with commercial NOx catalysts. Important contribution of this research work can be summarized as: (a) with plasma catalysis approach the NOx removal efficiency gets enhanced by a factor of 5.3-6.7 compared to only plasma. (b) with plasma adsorption approach the NOx removal efficiency gets enhanced by a factor of 4-6 compared to only plasma. (c) Fe2O3/TiO2 present in red mud can act as photo catalysts in oxidizing NO through plasma generated ethyl nitrate in the plasma cascaded red mud adsorption process (d) Amongst the agricultural wastes\, ground nut husk-based pellets exhibited 83% NOx removal efficiency (e) The newly developed metal film based DBD reactor enhances surfaces discharges far better than the helical wire reactor (f) commercial catalysts performed much better in NOx removal under plasma catalysis mode when compared to thermal catalysis mode. Further\, plasma catalysis with industrial wastes such as iron tailings and oyster shell yielded better/similar DeNOx efficiency when compared to that with commercial NOx catalysts thus\, justifying the usage of cheaper industrial wastes instead of expensive commercial ones.
URL:https://ee.iisc.ac.in/event/phd-thesis-defense-by-apoorva-sahu/
LOCATION:High Voltage Lab Seminar Hall (Hybrid mode)
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240808T160000
DTEND;TZID=Asia/Kolkata:20240808T170000
DTSTAMP:20260526T234124
CREATED:20240807T112959Z
LAST-MODIFIED:20240807T125800Z
UID:241507-1723132800-1723136400@ee.iisc.ac.in
SUMMARY:EE Talk 'Generic Modelling of Inverter Based Resources (IBRs) for Power System Planning Studies'
DESCRIPTION:IEEE PES Student Branch Chapter\, IISc\, is organizing a series of technical talks on ‘Generic Modelling of Inverter Based Resources (IBRs) for Power System Planning Studies’ by Prof. Vijay Vittal\, Arizona State University\, USA. \nThe details of the first technical talk are as follows. \nVenue: Conference Room B-303\,EE  2nd Floor\, Electrical Engineering Department \nDate and Time: Thursday\, 8th August 2024\, 4 PM – 5 PM IST. \nMode: In-person \nSpeaker Biography: \n \nRegents Professor Vijay Vittal is the Ira A. Fulton Chair Professor (2005) and ASU Foundation Professor in Electric Power Systems at Arizona State University. Prior to ASU\, Vittal was an Anson Marston Distinguished Professor at the Iowa State University\, Electrical and Computer Engineering Department. In addition\, Vittal was a Murray and Ruth Harpole Professor and director of the university’s Electric Power Research Center and site director of the National Science Foundation IUCRC Power System Engineering Research Center. He also served as the program director for power systems for the National Science Foundation Division of Electrical and Communication Systems in Washington\, D.C.\, from 1993 to 1994. He was the editor-in-chief of the IEEE Transactions on Power Systems from 2005 to 2011. Professor Vittal was elected to the U.S. National Academy of Engineering in 2004. In 2018\, he received the IEEE Power and Energy Society Prabha. S. Kundur Power System Dynamics and Control Award and the Utility Variable-Generation Integration Group Achievement Award. In 2013\, he was awarded the IEEE Herman Halperin Transmission and Distribution Technical Field Award. He also received the IEEE Power and Energy Society (PES) Outstanding Power Engineering Educator Award in 2000. He was elected an IEEE Fellow in 1997 and awarded the U.S. National Science Foundation Presidential Young Investigator Award in 1985.
URL:https://ee.iisc.ac.in/event/ee-talk-generic-modelling-of-inverter-based-resources-ibrs-for-power-system-planning-studies/
LOCATION:B308\,2nd floor\, EE Dept.
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240809T153000
DTEND;TZID=Asia/Kolkata:20240809T170000
DTSTAMP:20260526T234124
CREATED:20240809T050613Z
LAST-MODIFIED:20240809T050613Z
UID:241514-1723217400-1723222800@ee.iisc.ac.in
SUMMARY:Talk by SMA Solar India Pvt. Ltd
DESCRIPTION:Representative from SMA Solar India Pvt Ltd will be giving a talk today at 3:30 pm in the room B303. SMA is a leading global specialist in photovoltaic system technology headquartered in Niestetal. They are looking for interactions with faculties and students. In their talk\, they will mostly explain the activities of their company.
URL:https://ee.iisc.ac.in/event/talk-by-sma-solar-india-pvt-ltd/
LOCATION:B-303\,EE
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240814T100000
DTEND;TZID=Asia/Kolkata:20240814T130000
DTSTAMP:20260526T234124
CREATED:20240808T065206Z
LAST-MODIFIED:20240808T065348Z
UID:241510-1723629600-1723640400@ee.iisc.ac.in
SUMMARY:PhD Colloquium on Image Reconstruction
DESCRIPTION:PhD   Thesis Colloquium\nStudent : Deepak G Skariah\nAdvisor : Prof. Muthuvel Arigovindan\nTitle :  Infimal Convolution Based Regularization   for Image recovery\nDate and Time:   14.08.2024 (Wednesday)\,  11 am.\nVenue :  MMCR\, Department of Electrical Engineering\n \nAbstract\nThe quality of image captured by acquisition devices has increased drastically over the years largely due to a revolution in imaging sensor capability. But\, image acquisition under low illumination continues to be a bottleneck for imaging devices such as  optical microscopes   leading to blurred and noisy images.  A potential solution to this limitation   is a computational approach known as image restoration. An image restoration   algorithm recovers  an estimate of the original image from a noisy blurred observation  while assuming a knowledge of the image degradation model.  The restoration problem is even more challenging when it comes to a spatio-temporal signal as a good restoration scheme needs to be mindful of presence of motion in the measured signal. This means that in spatio-temporal signal restoration problem\, the algorithm should ensure temporal regularity of restored signal in addition to spatial regularity. Regularization based image restoration attempts to pose image restoration problem as a regularized optimization problem from the measured signal.  We propose to exploit the concept of infimal convolution from convex analysis to design effective and efficient restoration schemes for images and spatio-temporal images.\n    In our first work\, we address the problem of regularization design. We   propose  a family of derivative based regularization which we call generalized unitary invariant regularization and it belongs to class of infimal convolution based functionals. We  also design an algorithmic scheme to optimize the resultant optimization problem. We demonstrate the quality of proposed algorithm and restoration scheme through multiple experiments on simulated data.\n    In our  second work\, we address the restoration of spatio-temporal images measured from TIRF microscopes where a sequence of noisy blurred images are observed over time. We once again exploit the infimal convolution based approach to design a novel spatio-temporal regularizer that is tailor made for above class of signals. The proposed regularization was designed to ensure both  spatial and temporal regularity of restored signal. The resultant regularization functional is defined as an optimization problem where the cost is a weighted sum of two constituent functions where the two functions play the role of promoting spatial and temporal regularity respectively.   We also design an algorithm to optimize the resultant restoration problem using this regularization. We demonstrate the quality of the proposed algorithm by testing the restoration quality against spatio-temporal measurements    collected from TIRF microscopes.\n    In the third and final work we address the problem of estimating the relative weights in spatio-temporal regularization functional designed based on infimal convolution formulation. We propose a renewed optimization model where the spatio-temporal signal is estimated together with the better quality image estimate by incorporating the weights as part  of the optimization problem. We also design an iterative scheme to optimize the resultant joint optimization model. We demonstrate the effectiveness of this scheme against other  joint optimization schemes for spatio-temporal signal estimation.\nALL ARE WELCOME
URL:https://ee.iisc.ac.in/event/phd-colloquium-on-image-reconstruction/
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BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240823T160000
DTEND;TZID=Asia/Kolkata:20240823T170000
DTSTAMP:20260526T234124
CREATED:20240822T050155Z
LAST-MODIFIED:20240822T050155Z
UID:241642-1724428800-1724432400@ee.iisc.ac.in
SUMMARY:EE Talk 'Generic Modelling of Inverter Based Resources (IBRs) for Power System Planning Studies'
DESCRIPTION:IEEE PES Student Branch Chapter\, IISc\, is organizing a series of technical talks on ‘Generic Modelling of Inverter Based Resources (IBRs) for Power System Planning Studies’ by Prof. Vijay Vittal\, Arizona State University\, USA. \nThe details of the Third technical talk are as follows. \nVenue: Conference Room B-303\,EE  2nd Floor\, Electrical Engineering Department \nDate and Time: Friday\, 23rd  August 4 PM – 5 PM IST. \nMode: In-person \nSpeaker Biography: \n \nRegents Professor Vijay Vittal is the Ira A. Fulton Chair Professor (2005) and ASU Foundation Professor in Electric Power Systems at Arizona State University. Prior to ASU\, Vittal was an Anson Marston Distinguished Professor at the Iowa State University\, Electrical and Computer Engineering Department. In addition\, Vittal was a Murray and Ruth Harpole Professor and director of the university’s Electric Power Research Center and site director of the National Science Foundation IUCRC Power System Engineering Research Center. He also served as the program director for power systems for the National Science Foundation Division of Electrical and Communication Systems in Washington\, D.C.\, from 1993 to 1994. He was the editor-in-chief of the IEEE Transactions on Power Systems from 2005 to 2011. Professor Vittal was elected to the U.S. National Academy of Engineering in 2004. In 2018\, he received the IEEE Power and Energy Society Prabha. S. Kundur Power System Dynamics and Control Award and the Utility Variable-Generation Integration Group Achievement Award. In 2013\, he was awarded the IEEE Herman Halperin Transmission and Distribution Technical Field Award. He also received the IEEE Power and Energy Society (PES) Outstanding Power Engineering Educator Award in 2000. He was elected an IEEE Fellow in 1997 and awarded the U.S. National Science Foundation Presidential Young Investigator Award in 1985.
URL:https://ee.iisc.ac.in/event/ee-talk-generic-modelling-of-inverter-based-resources-ibrs-for-power-system-planning-studies-2/
LOCATION:B-303\,EE
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=Asia/Kolkata:20240828T160000
DTEND;TZID=Asia/Kolkata:20240828T173000
DTSTAMP:20260526T234124
CREATED:20240828T060156Z
LAST-MODIFIED:20240828T060156Z
UID:241775-1724860800-1724866200@ee.iisc.ac.in
SUMMARY:EE Talk: “Is EMT Simulation Becoming More of a Necessity in Time-Domain Simulation
DESCRIPTION:EEE PES Student Branch Chapter\, IISc\, is organizing a series of technical talks on ‘Generic Modelling of Inverter Based Resources (IBRs) for Power System Planning Studies’ by Prof. Vijay Vittal\, Arizona State University\, USA. \nThe details of the Fourth technical talk are as follows. \n\nTitle:  “Is EMT Simulation Becoming More of a Necessity in Time-Domain Simulation” \nVenue: Conference Room B-303\,EE  2nd Floor\, Electrical Engineering Department \nDate and Time: Wednesday\, 28 August 2024\, 4 PM – 5 PM  IST. \nMode: In-person \n\nSpeaker Biography: \n \nRegents Professor Vijay Vittal is the Ira A. Fulton Chair Professor (2005) and ASU Foundation Professor in Electric Power Systems at Arizona State University. Prior to ASU\, Vittal was an Anson Marston Distinguished Professor at the Iowa State University\, Electrical and Computer Engineering Department. In addition\, Vittal was a Murray and Ruth Harpole Professor and director of the university’s Electric Power Research Center and site director of the National Science Foundation IUCRC Power System Engineering Research Center. He also served as the program director for power systems for the National Science Foundation Division of Electrical and Communication Systems in Washington\, D.C.\, from 1993 to 1994. He was the editor-in-chief of the IEEE Transactions on Power Systems from 2005 to 2011. Professor Vittal was elected to the U.S. National Academy of Engineering in 2004. In 2018\, he received the IEEE Power and Energy Society Prabha. S. Kundur Power System Dynamics and Control Award and the Utility Variable-Generation Integration Group Achievement Award. In 2013\, he was awarded the IEEE Herman Halperin Transmission and Distribution Technical Field Award. He also received the IEEE Power and Energy Society (PES) Outstanding Power Engineering Educator Award in 2000. He was elected an IEEE Fellow in 1997 and awarded the U.S. National Science Foundation Presidential Young Investigator Award in 1985.
URL:https://ee.iisc.ac.in/event/ee-talk-is-emt-simulation-becoming-more-of-a-necessity-in-time-domain-simulation/
LOCATION:B-303\,EE
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