Wind generator impedance matching in small-scale passive wind energy systems
Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers
Abstract
ENGLISH ABSTRACT: In this paper, the improved turbine power matching of passive wind energy systems for dcconnected
battery storage applications with an impedance matching method is investigated. The passive
system uses a direct-drive permanent magnet synchronous generator and is directly connected via a diode
recti er to the dc xed-voltage battery storage. To improve power matching, an external inductance is added
to the passive system between the generator and the diode recti er. A static nite element based solution
method is proposed to accurately calculate the necessary external inductance to achieve near maximum power
point matching. It is shown that the proposed nite element based calculation method is computationally
ef cient and excellently suited for generator design optimization, which is critical for this application.
It is also shown that by rewinding existing machines for the correct cut-in speed and adding the external
inductance for improved power matching, existing machines can be effectively recycled for passive wind
energy systems. The proposed static nite element solution method's accuracy and improved power matching
are con rmed with measured results on a sub 5 kW power level.
Description
CITATION: Labuschagne, C. J. J. & Kamper, M. J. 2021. Wind generator impedance matching in small-scale passive wind energy systems. IEEE Access, 9:22558-22568, doi:10.1109/ACCESS.2021.3056226.
The original publication is available at https://ieeexplore.ieee.org
The original publication is available at https://ieeexplore.ieee.org
Keywords
Wind energy, Wind energy conversion systems, Wind turbines, Impedance matching
Citation
Labuschagne, C. J. J. & Kamper, M. J. 2021. Wind generator impedance matching in small-scale passive wind energy systems. IEEE Access, 9:22558-22568, doi:10.1109/ACCESS.2021.3056226