Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Subject: search.filters.subject.Boost converter

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    Review of developments in BLDC motor controllers along with study of four-quadrant operation and active Power Factor correction
    (Institute of Electrical and Electronics Engineers Inc., 2016) Krishnan, T.V.; Samskrit; I Vittal, K.P.
    This paper presents a review on recent developments in BLDC motor controllers and studies on four quadrant operation of BLDC drive along with active PFC. The main areas reviewed include Sensor-less control, Direct Torque Control (DTC), Fuzzy logic control, controller for four quadrant operation and active Power Factor Corrected (PFC) converter fed BLDC motor drive. A comprehensive study has been done on four quadrant operation and active PFC converter fed BLDC motor drive with simulation in MATLAB/SIMULINK. The proposed control algorithm for four quadrant operation detects the speed reversal requirement and changes the quadrant of operation accordingly. In PFC converter fed BLDC motor drive, a Boost converter working in continuous current mode is designed to improve the supply power factor. © 2015 IEEE.
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    Remote Triggered Laboratory for Boost Converter Using LabVIEW
    (Springer Science and Business Media Deutschland GmbH, 2021) Ansal, V.; Remya, V.K.; Jagadeesh, V.K.; Krishnan, K.
    This paper aims to provide remote access to laboratories in power electronics to all levels from under graduate to research. The platform is focused on learning aspect as much as performing the experiments. Remote triggered power electronics laboratory for boost converter experiments has been developed using National Instruments(NI) data acquisition device myRIO and LabVIEW software package which has an extensive support for interfacing devices and instruments. LabVIEW software is used to access the data using myRIO which has both the processor and Field Programmable Gate Array (FPGA). Through Graphical User Interface (GUI), a user in remote location is able to vary parameter pertaining to boost converter circuit which is transmitted to laboratory PC that has NI LabVIEW installed in it. The input is further fed to circuit, and then, output is fed back to LabVIEW through NI myRIO which ultimately is returned to user’s PC using web-publishing tool and can be viewed through GUI. Remote Triggered (RT) power electronics laboratories can be effectively used to give laboratory demonstrations to large number of learners. © 2021, Springer Nature Singapore Pte Ltd.
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    Loss Analysis of Conventional and Three Level Boost DC-DC Converters employed for MPPT in PV Systems
    (Institute of Electrical and Electronics Engineers Inc., 2022) P, P.R.; Vignesh Kumar, V.K.; Balasubramanian, B.
    Photovoltaic (PV) systems are often exposed to nonuniform insolation due to shading. Under these conditions, there exists multiple peaks in their power-voltage (P-V) characteristics and among which there is one global maximum power point (GMPP). Several GMPP tracking methods employed in the literature have focused mainly on the tracking efficiency. But, the PV system output has to include the DC-DC converter losses also to get the actual estimate of the power extracted. Hence, this paper attempts to analyze the losses incurred in the DCDC converters namely conventional boost converter (CBC) and three-level boost converter (TLBC) connected to a PV array. It is observed that the efficiency of converters depends on the location of GMPP in the (P-V) curve. Further, the impact of switching frequency on the losses of aforementioned two topologies is discussed. A detailed comparison of the loss analysis performed with simulation results obtained from MATLAB/Simulink is provided. © 2022 IEEE.