Department of Electrical and Electronics Engineering

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Author: search.filters.author.Mukherjee, Bijoy KrishnaSubject: search.filters.subject.Robust control

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    Design, Fabrication, DSP Implementation and Comparison of Simulated Performance of a Linear Induction Motor for PI and Hα Control Schemes
    (Maglev, 2004-10) Mukherjee, Bijoy Krishna
    From conveyors to the high-speed MAGLEV vehicles, from knitting machines to the sophisticated robotic systems, Linear Induction Motors (LIMs) have got a wide range of applications. They have got all the potential to replace the age-old belt-pulley driven systems completely in the coming years. In the present work, a flat, single sided, short primary LIM, which can be used as a linear propulsion system, has been designed and the same has been fabricated. Thereafter PI controllers are designed to implement the field oriented control scheme for use in variable speed drives. The whole system is simulated in the SIMULINK environment of MATLAB and the simulation results are shown. Since the PI controllers cannot handle model uncertainties and parameter variation effects, a robust controller has also been designed. Implementation of the whole scheme is to be done using a DSP in TMS320LF2407A platform. Dry run of the programs has already been done. The inverter is under construction.
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    Forecast-based modeling and robust frequency control of standalone microgrids considering high penetration of renewable sources
    (Wiley, 2020-12) Bhanot, Surekha; Mathur, Hitesh Datt; Mukherjee, Bijoy Krishna
    This article proposes forecast-based modeling and robust frequency control strat-egy in isolated microgrids (MGs) to improve its stability. The intermittency andvariability in renewable generation is problem for its smooth integration to MGsconsidering frequency stability. Continuous rise in penetration levels of renew-able energy sources (RESs) is the main motivation behind forecast-based model-ing and controller design for MGs. The disturbances that affect the frequency inthe MG may come from the load side and/or the generation sides. In MGs, atthe generation side, the forecast of power from RESs is usually obtained to get arough estimate of available renewable power. The forecasted power always dif-fers from the actual one, so the secondary frequency controller may get over-burdened due to forecast error resulting in abnormal frequency deviation thatmay lead to unstable power system. The proposedH∞based robust controldesign considers the forecast error which improves the system stability and per-formance against disturbances coming from load/generation side.