Next Article in Journal
Rock-Breaking Properties of Multi-Nozzle Bits for Tree-Type Drilling in Underground Coal Mines
Next Article in Special Issue
Robust Optimization-Based Scheduling of Multi-Microgrids Considering Uncertainties
Previous Article in Journal
Sliding-Mode Control of a Charger/Discharger DC/DC Converter for DC-Bus Regulation in Renewable Power Systems
Previous Article in Special Issue
Modeling and Control of the Distributed Power Converters in a Standalone DC Microgrid
Article Menu
Issue 4 (April) cover image

Export Article

Open AccessArticle
Energies 2016, 9(4), 248; doi:10.3390/en9040248

A Novel DC-Bus Sensor-less MPPT Technique for Single-Stage PV Grid-Connected Inverters

1
Department of Electrical and Control Engineering, College of Engineering and Technology, Arab Academy for Science, Technology & Maritime Transport, Alexandria 1029, Egypt
2
Electrical Engineering Department, Technical University of Catalonia (UPC), Barcelona 08034, Spain
3
University of Beira Interior, R. Fonte do Lameiro, 6201-001 Covilhã, Portugal
4
INESC-ID, Inst. Super. Tecn., University of Lisbon, Av. Rovisco Pais, 1, 1049-001 Lisbon, Portugal
5
INESC TEC and Faculty of Engineering of the University of Porto, R. Dr. Roberto Frias, 4200-465 Porto, Portugal
*
Author to whom correspondence should be addressed.
Academic Editor: Gabriele Grandi
Received: 29 December 2015 / Revised: 18 March 2016 / Accepted: 21 March 2016 / Published: 30 March 2016
(This article belongs to the Special Issue Distributed Renewable Generation)

Abstract

Single-stage grid connected inverters are considered as an economic, compact and simple topology compared with multi-stage inverters. In photovoltaic (PV) grid connected systems, the major requirement is to achieve maximum output power from the source. Maximum Power Point Tracking (MPPT) techniques require measurements on the DC side of the inverter connected to the PV in order to determine the current operating point on the power characteristics. Typically this is achieved by perturbing the reference output power and observe the change in the PV voltage, current or both. Based on the observation, it could be determined whether the current operating point is beyond or below maximum power. This paper presents an MPPT technique for a single-stage PV grid connected inverter where the MPPT algorithm determines the current operating point at different operating conditions based upon observing the inverter controller action. Such approach eliminates the requirement of sensing elements to be added to the converter which aids the advantages of the single-stage converter. Design of the utilized PV system is derived based on filter parameters, PV panel selection and controller parameters. Using simulation and practical implementation, the performance of the proposed MPPT technique is evaluated for the PV grid connected system. View Full-Text
Keywords: single-stage converter; MPPT technique; sensor-less; photovoltaic; grid connected single-stage converter; MPPT technique; sensor-less; photovoltaic; grid connected
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Elsaharty, M.A.; Ashour, H.A.; Rakhshani, E.; Pouresmaeil, E.; Catalão, J.P.S. A Novel DC-Bus Sensor-less MPPT Technique for Single-Stage PV Grid-Connected Inverters. Energies 2016, 9, 248.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top