RESEARCH PAPER
Development of a Test Rig for the Measurement of Small Wind Turbines in a Wind Tunnel
1
Stralsund University of Applied Sciences, Faculty of Mechanical Engineering, Zur Schwedenschanze 15, 18435 Stralsund, Germany
Submission date: 2022-10-05
Acceptance date: 2023-02-07
Online publication date: 2023-07-11
Publication date: 2023-09-01
Acta Mechanica et Automatica 2023;17(3):390-394
KEYWORDS
ABSTRACT
This paper describes the development, design and function of a test rig for the measurement of small wind turbines in a wind tunnel and presents the first exemplary measurements of the performance characteristics of various horizontal and vertical rotors. A central part of this test rig is the developed control system with an electronic load, which enables an automated recording of the measured values for the evaluation of the power coefficients (cp) and tip-speed ratio (λ) values. Another challenge emerges owing to the known differences in the power spectrum, because the power coefficients of drag rotors (<20%) are different from those of buoyancy rotors (<40%). The system was adapted to the different ranges by means of a stepless switching using various resistors. The entire control and regulation unit was compactly implemented using a programmable logic controller (PLC) and dynamically linked to the operating parameters of the wind tunnel. This enables an automated operation of the wind tunnel during the determination of the performance parameters of the investigated wind turbines.
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| eISSN: | 2300-5319 |
| ISSN: | 1898-4088 |
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