Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Improved Design of Sliding-Mode Controllers Based on the Requirements of MPPT Techniques

  • Identification data

    Identifier: imarina:9285460
    Authors:
    Montoya DGRamos-Paja CAGiral R
    Abstract:
    In many grid-connected applications, a dc/dc switching converter is usually connected between the PV modules and the inverter. This paper presents an improved procedure to design a sliding controller for the PV system, which drives the PV voltage to follow a reference provided by an external MPPT algorithm and mitigates the perturbations caused by the irradiance changes and oscillations in the bulk voltage. By considering that the switching surface is the linear combination of the input capacitor current and the PV voltage error, the proposed design exhibits advantages in comparison with existing solutions that rely in the linearization of inner current loop dynamics. The proposed integral procedure, by taking also into account the effects in the closed-loop system dynamics of a reference filter, ensures a stable sliding regime in all the desired operation range of the system, while the settling time and overshoot of the PV voltage required by an MPPT algorithm are provided. Differently from a previous similar but less rigorous approach, the switching function and reference filter parameters are obtained by numerically solving a set of nonlinear equations. Simulations and experiments were used to demonstrate the efficiency of the proposed solution in presence of environmental and load perturbations. © 2015 IEEE.
  • Others:

    Author, as appears in the article.: Montoya DG; Ramos-Paja CA; Giral R
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Giral Castillon, Roberto
    Keywords: Switching surfaces Switching functions Switching converter Switching circuits Sliding mode controller Sliding mode control Sliding controllers Rigorous approach Photovoltaic systems Photovoltaic system Photovoltaic cells Nonlinear equations Nonlinear control systems Mppt Maximum power point trackers Maximum power point tracker Load perturbations Linear combinations Irradiance change Electric inverters Dc-dc power converter Dc-dc converters Controllers Closed loop systems
    Abstract: In many grid-connected applications, a dc/dc switching converter is usually connected between the PV modules and the inverter. This paper presents an improved procedure to design a sliding controller for the PV system, which drives the PV voltage to follow a reference provided by an external MPPT algorithm and mitigates the perturbations caused by the irradiance changes and oscillations in the bulk voltage. By considering that the switching surface is the linear combination of the input capacitor current and the PV voltage error, the proposed design exhibits advantages in comparison with existing solutions that rely in the linearization of inner current loop dynamics. The proposed integral procedure, by taking also into account the effects in the closed-loop system dynamics of a reference filter, ensures a stable sliding regime in all the desired operation range of the system, while the settling time and overshoot of the PV voltage required by an MPPT algorithm are provided. Differently from a previous similar but less rigorous approach, the switching function and reference filter parameters are obtained by numerically solving a set of nonlinear equations. Simulations and experiments were used to demonstrate the efficiency of the proposed solution in presence of environmental and load perturbations. © 2015 IEEE.
    Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: roberto.giral@urv.cat
    Author identifier: 0000-0001-6582-6741
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://ieeexplore.ieee.org/document/7024938
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Ieee Transactions On Power Electronics. 31 (1): 235-247
    APA: Montoya DG; Ramos-Paja CA; Giral R (2016). Improved Design of Sliding-Mode Controllers Based on the Requirements of MPPT Techniques. Ieee Transactions On Power Electronics, 31(1), 235-247. DOI: 10.1109/TPEL.2015.2397831
    Article's DOI: 10.1109/TPEL.2015.2397831
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Switching surfaces
    Switching functions
    Switching converter
    Switching circuits
    Sliding mode controller
    Sliding mode control
    Sliding controllers
    Rigorous approach
    Photovoltaic systems
    Photovoltaic system
    Photovoltaic cells
    Nonlinear equations
    Nonlinear control systems
    Mppt
    Maximum power point trackers
    Maximum power point tracker
    Load perturbations
    Linear combinations
    Irradiance change
    Electric inverters
    Dc-dc power converter
    Dc-dc converters
    Controllers
    Closed loop systems
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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