Author, as appears in the article.: Haroun R., Aroudi A., Cid-Pastor A., Garíca G., Olalla C., Martínez-Salamero L.

Department: Enginyeria Electrònica, Elèctrica i Automàtica

URV's Author/s: Cid Pastor, Angel / El Aroudi Chaoui, Abdelali / Haroun Mohamed Abdelkarim, Reham / Martínez Salamero, Luis / Olalla Martínez, Carlos

Keywords: Slidingmode control (smc) Photovoltaic (pv) systems Mppt Loss-free resistor (lfr) Impedance matching Cascaded boost converters

Abstract: Switching dc-dc converters are widely used to interface the dc output of renewable energy resources with power distribution systems in order to facilitate the use of energy at the customer side. In the case of residential photovoltaic (PV) applications, high conversion ratio is usually required, in order to adapt the low output voltages of PV modules to a dc bus voltage, while dealing with the appropriate impedance matching. In this paper, a system connected to a PV panel consisting of two cascaded dc-dc boost converters under sliding-mode control and working as loss-free resistors is studied. The modeling, simulation, and design of the system are addressed. First, an ideal reduced-order sliding-mode dynamics model is derived from the full-order switched model taking into account the sliding constraints, the nonlinear characteristic of the PV module, and the dynamics of the MPPT controller. For this model, a design-oriented averaged model is obtained and its dynamic behavior is analyzed showing that the system is asymptotically globally stable. Moreover, the proposed system can achieve a high conversion ratio with an efficiency close to 95% for a wide range of working power. Numerical simulations and experimental results corroborate the theoretical analysis and illustrate the advantages of this architecture in PV systems.

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/

ISSN: 08858993

Author's mail: luis.martinez@urv.cat carlos.olalla@urv.cat abdelali.elaroudi@urv.cat angel.cid@urv.cat reham.haroun@urv.cat

Author identifier: 0000-0003-3344-9501 0000-0001-8333-9840 0000-0001-9103-7762 0000-0001-8124-6210 0000-0002-8099-4281

Record's date: 2023-02-18

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

Link to the original source: https://ieeexplore.ieee.org/document/6855363

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

Papper original source: Ieee Transactions On Power Electronics. 30 (6): 3185-3199

APA: Haroun R., Aroudi A., Cid-Pastor A., Garíca G., Olalla C., Martínez-Salamero L. (2015). Impedance matching in photovoltaic systems using cascaded boost converters and sliding-mode control. Ieee Transactions On Power Electronics, 30(6), 3185-3199. DOI: 10.1109/TPEL.2014.2339134

Article's DOI: 10.1109/TPEL.2014.2339134

Entity: Universitat Rovira i Virgili

Journal publication year: 2015

Publication Type: Journal Publications