Title: Single phase low THD optimised inverter for PV voltage regulation

Authors: Antonio Valderrabano-Gonzalez; Francisco Beltran-Carbajal; Ruben Tapia-Olvera; Julio Cesar Rosas-Caro; Hossam A. Gabbar; Adel M. Sharaf

Addresses: Universidad Panamericana Campus Guadalajara, Prol. Calzada Circunvalación Pte. No. 49, Col. Ciudad Granja. Zapopan, Jal., 45010, México ' Universidad Autónoma Metropolitana, Unidad Azcapotzalco, Departamento de Energía, Av. San Pablo No. 180, Col. Reynosa Tamaulipas, C.P. 02200 México, D.F., México ' Universidad Politécnica de Tulancingo, Ingenierías No. 100, Huapalcalco, Hgo., 43629, México ' Universidad Panamericana Campus Guadalajara, Prol. Calzada Circunvalación Pte. No. 49, Col. Ciudad Granja. Zapopan, Jal., 45010, México ' University of Ontario Institute of Technology, UOIT, 2000 Simcoe Street North Oshawa, ON L1H 7K4, Canada ' Sharaf Energy Systems, Inc., 147 Berkley Drive, Fredericton E3C 2P2, New Brunswick, Canada

Abstract: This paper illustrates a way to verify optimised angles for five and seven level single-phase inverters. The ability to follow strict angles for switching times is due to a simple synchronising scheme used along with the arctangent method. Power stage is focused to attain the lowest number of switches and DC sources, and can be used in a cascade multilevel strategy. Comparison of harmonic contents and total harmonic distortion is presented for several optimisation strategies carried out on the literature, and a compensation scheme for regulation with two degree of freedom that brings the inverter to have 11 or 15 level and be within the standard is proposed.

Keywords: FACTS; single phase inverters; PV voltage regulation; photovoltaic systems; optimisation; power quality; total harmonic distortion; THD; switching times; synchronisation; solar panels; solar energy; solar power.

DOI: 10.1504/IJPSE.2015.071425

International Journal of Process Systems Engineering, 2015 Vol.3 No.1/2/3, pp.3 - 19

Received: 11 Sep 2014
Accepted: 01 Feb 2015

Published online: 27 Aug 2015 *

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