Design Procedure to Convert a Maximum Power Point Tracking Algorithm into a Loop Control System

Moacyr A. G. de Brito, Victor A. Prado, Edson A. Batista, Marcos G. Alves and Carlos A. Canesin
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Moacyr A. G. de Brito: Faculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, MS, Brazil
Victor A. Prado: Faculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, MS, Brazil
Edson A. Batista: Faculty of Engineering, Architecture and Urbanism and Geography, Federal University of Mato Grosso do Sul—UFMS, Campo Grande 79070-900, MS, Brazil
Marcos G. Alves: Ningbo Institute of Technology, School of Computing and Data Engineering, Zhejiang University, Ningbo 315100, China
Carlos A. Canesin: Faculty of Engineering, São Paulo State University—UNESP, Ilha Solteira 15385-000, SP, Brazil

Energies, 2021, vol. 14, issue 15, 1-17

Abstract: This paper presents a novel complete design procedure to convert a maximum power point tracking (MPPT) algorithm into a control system. The MPPT algorithm can be tuned by employing any control system design. In this paper, we adopted Bode diagrams using the criteria of module and phase as the power electronics specialists are habituated with such concepts. The MPPT control transfer functions were derived using the average state equations and small-signal analysis. The control loops were derived for power and voltage control loops. The design procedure was applied to the well-known perturb and observe (P&O) and incremental conductance (IC) algorithms, returning the P&O based on PI and IC based on PI algorithms. Such algorithms were evaluated through simulation and experimental results. Additionally, we showed that the proposed design methodology can optimize energy harvesting, allowing algorithms to have outstanding tracking factors (above 99%) and adaptability characteristics.

Keywords: algorithms; control loops; MPPT; photovoltaic energy; energy harvesting (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
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