Author, as appears in the article.: El Aroudi A; Al-Numay M; Garci G; Al Hossani K; Al Sayari N; Cid-Pastor A

Department: Enginyeria Electrònica, Elèctrica i Automàtica

e-ISSN: 1996-1073

URV's Author/s: Cid Pastor, Angel / El Aroudi Chaoui, Abdelali

Keywords: Subharmonic oscillations Stability Quadratic boost Photovoltaic systems Photovoltaic (pv) Nonlinear dynamics Mppt Maximum power point tracking (mppt) nonlinear dynamics Maximum power point tracking (mppt) Dc-dc converters

Abstract: © 2019 MDPI AG. All rights reserved. In this paper, the nonlinear dynamics of a PV-fed high-voltage-gain single-switch quadratic boost converter loaded by a grid-interlinked DC-AC inverter is explored in its parameter space. The control of the input port of the converter is designed using a resistive control approach ensuring stability at the slow time-scale. However, time-domain simulations, performed on a full-order circuit-level switched model implemented in PSIM c software, show that at relatively high irradiance levels, the system may exhibit undesired subharmonic instabilities at the fast time-scale. A model of the system is derived, and a closed-form expression is used for locating the subharmonic instability boundary in terms of parameters of different nature. The theoretical results are in remarkable agreement with the numerical simulations and experimental measurements using a laboratory prototype. The modeling method proposed and the results obtained can help in guiding the design of power conditioning converters for solar PV systems, as well as other similar structures for energy conversion systems.

Thematic Areas: Zootecnia / recursos pesqueiros Renewable energy, sustainability and the environment Interdisciplinar General computer science Fuel technology Engineering (miscellaneous) Engenharias iv Engenharias iii Engenharias ii Energy engineering and power technology Energy (miscellaneous) Energy & fuels Electrical and electronic engineering Economia Control and optimization Ciências ambientais Ciências agrárias i Ciência da computação Building and construction Biotecnología Biodiversidade Astronomia / física

licence for use: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 19961073

Author's mail: abdelali.elaroudi@urv.cat angel.cid@urv.cat

Author identifier: 0000-0001-9103-7762 0000-0001-8124-6210

Record's date: 2023-02-18

Journal volume: 12

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/1996-1073/12/1/61

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Energies. 12 (1):

APA: El Aroudi A; Al-Numay M; Garci G; Al Hossani K; Al Sayari N; Cid-Pastor A (2019). Analysis of nonlinear dynamics of a quadratic boost converter used for maximum power point tracking in a grid-interlinked PV system. Energies, 12(1), -. DOI: 10.3390/en12010061

Article's DOI: 10.3390/en12010061

Entity: Universitat Rovira i Virgili

Journal publication year: 2019

Publication Type: Journal Publications