Leaky least logarithmic absolute difference based control algorithm and learning based InC MPPT technique for grid integrated PV system

Kumar, Nishant and Singh, Bhim and Panigrahi, Bijaya Ketan and Xu, L. (2019) Leaky least logarithmic absolute difference based control algorithm and learning based InC MPPT technique for grid integrated PV system. IEEE Transactions on Industrial Electronics, 66 (11). pp. 9003-9012. 8605505. ISSN 0278-0046 (https://doi.org/10.1109/TIE.2018.2890497)

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Abstract

This paper introduces a novel leaky least logarithmic absolute difference (LLLAD)-based control algorithm and a learning-based incremental conductance (LIC) maximum power point tracking algorithm for a grid-integrated solar photovoltaic (PV) system. Here, a three-phase topology of the grid-integrated PV system is implemented, with the nonlinear/linear loads. The proposed LIC technique is an improved form of an incremental conductance (InC) algorithm, where inherent problems of the traditional InC technique, such as steady-state oscillations, slow dynamic responses, and fixed-step-size issues, are successfully mitigated. The prime objective of the proposed LLLAD control is to meet the active power requirement of the loads from the generated solar PV power, and after satisfying the load demand, the excess power is supplied to the grid. However, when the generated solar power is less than the load demand, then LLLAD meets the load by taking extra required power from the grid. During these power management processes, on the grid side, the power quality is maintained. During daytime, the proposed control technique provides load balancing, power factor correction, and harmonic filtering. Moreover, when solar irradiation is zero, then the dc-link capacitor and a voltage-source converter act as a distribution static compensator, which enhances the utilization factor of the system. The proposed techniques are modeled, and their performances are verified experimentally on a developed prototype in solar insolation variation conditions, unbalanced loading, and in different grid disturbances such as over- and undervoltage, phase imbalance, harmonics distortion in the grid voltage, etc. Test results have met the objectives of the proposed paper, and parameters are under the permissible limit, according to the IEEE-519 standard.

  • Item type:Article
    ID code:66414
    Dates:
    Date
    Event
    1 November 2019
    Published
    8 January 2019
    Published Online
    4 December 2018
    Accepted
    Notes:© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:18 Dec 2018 12:49
    Last modified:14 Apr 2024 07:25
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/66414
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