Abstract
Renewable energy is high on international and national agendas. Currently, grid-connected photovoltaic (PV) systems are a popular technology to convert solar energy into electricity. Existing PV panels have a relatively low and varying output voltage so that the converter installed between the PVs and the grid should be equipped with high step-up and versatile control capabilities. In addition, the output current of PV systems is rich in harmonics which affect the power quality of the grid. In this paper, a new multi-stage hysteresis control of a step-up DC-DC converter is proposed for integrating PVs into a single-phase power grid. The proposed circuitry and control method is experimentally validated by testing on a 600W prototype converter. The developed technology has significant economic implications and could be applied to many distributed generation (DG) systems, especially for the developing countries which have a large number of small PVs connected to their single-phase distribution network.
Original language | English |
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Pages (from-to) | 247-254 |
Number of pages | 8 |
Journal | Renewable Energy |
Volume | 74 |
Early online date | 24 Aug 2014 |
DOIs | |
Publication status | Published - Feb 2015 |
Keywords
- Converters
- DC-DC power conversion
- Harmonic distortion
- Hysteresis
- Multilevel systems
- Photovoltaic power systems
ASJC Scopus subject areas
- Renewable Energy, Sustainability and the Environment