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August 2019

A Predictive Current Control Algorithm for Mixed Conduction Mode Operation of Boost PFC Converter

August 19, 2019 @ 2:00 pm - 3:00 pm
ESB – 244

Date: 19/08/2019 (Monday) Time: 2.00 pm Venue: ESB 244 Speaker: Harish Sudhakaran Nair (EE15D052) Guide: Dr. Lakshmi Narasamma     Abstract Boost PFC converters are extensively used as the front-end stage in power supplies to ensure that the input current conforms to harmonic norms. The Mixed Conduction Mode (MCM) operation of boost PFC converters is gaining popularity due to the wide operating ranges of the converter and the lower boost inductance requirement in MCM which helps in improving the power…

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Growth and characterization of c-axis and a-axis oriented Aluminium Nitride thin films for RF-MEMS applications

August 22, 2019 @ 3:30 pm - 4:30 pm
ESB – 244

Speaker            : Amal Das (EE15D305) Date                 : 2019 (22nd August) Time                : 3.30 PM Venue              : ESB 244 Guide               : Dr. Amitava DasGupta & Dr. M S Ramachandra Rao   ABSTRACT In recent years, AlN thin films are intensively studied for the fabrication of MEMS devices because of their unique properties such as wide band gap (6.2 eV), high thermal conductivity (2.85 Wcm−1K−l ), high resistivity (1011–1013 Ω-cm), low thermal expansion coefficient (4.2×10−6  K−1 ),…

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An Energy Based Analysis for High Voltage Low Power Flyback Converter Feeding Capacitive Loads

August 26, 2019 @ 2:00 pm - 3:00 pm
ESB – 244

Date: 26th August 2019 Time & Venue: 2:00 PM at ESB 244 Speaker: Vaishnavi R (EE15D029) Guide: Dr. Lakshminarasamma Abstract Certain applications such as an ion mass analyzer and smart material based actuators demand programmable high voltage drive in the range of 0 – 2.5 kV for their effective operation. These applications are fed from low voltage battery source and electrically resemble a capacitive load. An intermediate power processing circuitry is essential to step up the voltage and meet the…

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Fabrication and functionalisation of silicon nanoporous membranes for uremic toxin clearance

August 29, 2019 @ 4:00 pm - 5:00 pm
ESB – 244

peaker            : Ananya Ghosh (EE16D009) Date                  : 2019 (29th August) Time                 : 4 PM Venue               : ESB 244 Guide               : Dr. Enakshi Bhattacharya   ABSTRACT Efficacy of silicon nanoporous membrane (SNM), fabricated using batch mode microelectronic processes, for the clearance of uremic toxins is investigated. The SNM was 15 nm thick with an average pore diameter of 8 nm. The pores are easily tunable by varying different process parameters such as annealing temperature, capping layer…

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September 2019

Conductivity Measurement Using Non-Contact Potential Electrodes

September 6, 2019 @ 3:30 pm - 4:30 pm
CSD-308

  DATE             :     6-09-2019 TIME              :     3.30 PM VENUE          :     CSD 308 SPEAKER      :     K. K. Tejaswini (EE15D021) Guides             :     Prof. Boby George, Prof. Jagadeesh Kumar V.   ABSTRACT In this talk, a new conductivity measurement probe suitable for oceanographic applications will be presented. The new probe has non-contact potential electrodes and a guard ring along with the signal conditioning circuit. In this method, the contact type potential terminals of a traditional four lead conductivity probe are replaced with non-contact…

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A two-channel ADC using a Delta-Sigma modulator without reset and a modulated-sinc-sum filter

September 16, 2019 @ 11:00 am - 12:00 pm
ESB – 244, Electrical Engineering, IITM

Date: 16th September 2019. Time: 11:00am. Venue: ESB244, Department of Electrical Engineering. Speaker: R.S. Ashwin Kumar (EE13D058). Guide: Dr. Nagendra Krishnapura.     Abstract: Delta-Sigma ADCs are popular due to their ability to achieve high resolutions. But the intrinsic memory present in the ADC prevents it from being deployed in multiplexed (multi-channel) environments. The conventional way around this problem is to reset the memory elements in the ADC before the start of every conversion cycle. However, this intermittent operation compromises…

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Defect identification and localization based on ultrasonic guided waves using outlier analysis

September 18, 2019 @ 3:00 pm - 4:00 pm
CSD-308

Speaker            : T.L. Jagadeeshwar (EE16D302) Date                  : 18th September-2019 Time                 : 3 PM Venue               : CSD 308 Guides               : Dr. Balaji Srinivasan (EE) and Dr. Prabhu Rajagopal (ME)   Abstract: Structure health monitoring (SHM) today plays a vital role in prolonging the life of capital-intensive infrastructural assets, which are increasingly using composite materials. Thus, there is wide interest in evolving efficient techniques to identify defects in composite structures, for use in SHM. Interrogation with ultrasonic guided waves is attractive as this provides a pathway for defect identification and localization over relatively large areas of…

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Learning-based models for restoration and enhancement of the spatial and temporal resolution of blurred images

September 26, 2019 @ 11:00 am - 12:00 pm

Date: 26.09.2019 (Thursday) Time: 11.00 AM Venue: ESB 244 Speaker: Kuldeep Purohit (EE14D217) Guide: Dr. A N Rajagopalan DC Members:   Dr. R Aravind (Chairperson) Dr. Kaushik Mitra Dr. Shanthi Bhattacharya Dr. Sukhendu Das (CSE)   Abstract Image deblurring and super-resolution are well-studied topics in vision and imaging community. Limited sensor-size and fixed aperture entail for higher exposure times in low-light conditions leading to visible blurring artifacts and poor quality of the captured images. In this talk, we present solutions…

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October 2019

Static Voltage Stability Assessment of a Radial Distribution System under Uncertainty using Modified Affine Arithmetic Division

October 23, 2019 @ 3:00 pm - 4:00 pm
ESB – 244

DATE & TIME: 23rd October, 2019 (Wednesday), 3:00 pm, ESB 244. SPEAKER: Adusumilli Bala Surendra (EE15D200). Research Guide: Dr. B Kalyan Kumar   ABSTRACT The maximum loadability of transmission and distribution systems can be different if there is a timely control of bus voltages in transmission systems. Therefore, voltage stability for distribution systems need to be studied separately. Continuation Power Flow (CPF) analysis is one of the widely used static voltage stability analysis tools with which the maximum loadability of…

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A Combined Magnetic and Elastic based Sensory System for a Real-Time Visual Feedback based Ophthalmic Anesthesia Training System

October 24, 2019 @ 4:00 pm - 5:00 pm

DATE             :   24.10.2019 TIME              :   4 - 5 pm VENUE          :   ESB 234 SPEAKER      :   Nimal J. Kumar (EE14D403) Research Advisors : Dr. Boby George and Dr. Mohanasankar Sivaprakasam   Abstract: Ophthalmic anesthesia training simulators require the evaluation of the proper procedure of (i) orbital needle block followed by (ii) ocular digital massage. In this talk, an elastic silicone eye mount that articulates the anatomical features of the eye and allows lateral, axial and compressive movements will be presented. This…

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