Next Article in Journal
A Financial Evaluation of a Multiple Inclination, Rooftop-Mounted, Photovoltaic System Where Structured Tariffs Apply: A Case Study of a South African Shopping Centre
Next Article in Special Issue
Solar Irradiance Forecast Based on Cloud Movement Prediction
Previous Article in Journal
Energy Efficiency Analysis of the Refining Unit in Thermo-Mechanical Pulp Mill
Article

Experimental Investigation of a Standalone Wind Energy System with a Battery-Assisted Quasi-Z-Source Inverter

Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, 21000 Split, Croatia
*
Author to whom correspondence should be addressed.
Academic Editor: Andrés Elías Feijóo Lorenzo
Energies 2021, 14(6), 1665; https://doi.org/10.3390/en14061665
Received: 10 February 2021 / Revised: 8 March 2021 / Accepted: 15 March 2021 / Published: 17 March 2021
(This article belongs to the Special Issue Advanced Control Techniques for Wind/Solar/Battery Systems)
This paper presents a wind energy conversion system (WECS) for grid-isolated areas. The system includes a squirrel-cage induction generator (SCIG) and a battery-assisted quasi-Z source inverter (qZSI). The batteries ensure reliable and stable operation of the WECS in spite of the wind power oscillations. The maximum power is captured from both the wind turbine (WT) and the SCIG through adjustment of the WT speed and the SCIG operating flux, respectively. The utilized maximum power point tracking (MPPT) algorithms belong to the group of fuzzy logic (FL) search-based algorithms. The battery state of charge (SOC) is tracked online and controlled. When it reaches the minimum allowed level, the load is automatically disconnected; conversely, when it reaches the maximum allowed level, the battery charging is stopped via WT speed control. The load voltage root-mean-square (RMS) value and frequency are at all times controlled at grid-level values. The performance of the proposed system was experimentally validated, in steady state and during transients, achieving wide ranges of wind speed, load power, SOC, and alternating current/direct current (AC/DC) voltage levels. The system startup and low-wind operation were also analyzed. The control algorithms were executed in real time by means of the DS1103 and MicroLabBox controller boards (dSpace). View Full-Text
Keywords: quasi-Z-source inverter; wind energy; induction generator; maximum power point; battery control quasi-Z-source inverter; wind energy; induction generator; maximum power point; battery control
Show Figures

Graphical abstract

MDPI and ACS Style

Bubalo, M.; Bašić, M.; Vukadinović, D.; Grgić, I. Experimental Investigation of a Standalone Wind Energy System with a Battery-Assisted Quasi-Z-Source Inverter. Energies 2021, 14, 1665. https://doi.org/10.3390/en14061665

AMA Style

Bubalo M, Bašić M, Vukadinović D, Grgić I. Experimental Investigation of a Standalone Wind Energy System with a Battery-Assisted Quasi-Z-Source Inverter. Energies. 2021; 14(6):1665. https://doi.org/10.3390/en14061665

Chicago/Turabian Style

Bubalo, Matija, Mateo Bašić, Dinko Vukadinović, and Ivan Grgić. 2021. "Experimental Investigation of a Standalone Wind Energy System with a Battery-Assisted Quasi-Z-Source Inverter" Energies 14, no. 6: 1665. https://doi.org/10.3390/en14061665

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

Article Access Map by Country/Region

1
Back to TopTop