Permanent Magnet Generator for a Gearless Backyard Wind Turbine

Sebastian Różowicz, Zbigniew Goryca and Antoni Różowicz
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Sebastian Różowicz: Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, Tysiąclecia Państwa Polskiego Str. 7, 25-314 Kielce, Poland
Zbigniew Goryca: Faculty of Environmental, Geomatic and Energy Engineering, Kielce University of Technology, Tysiąclecia Państwa Polskiego Str. 7, 25-314 Kielce, Poland
Antoni Różowicz: Department of Industrial Electrical Engineering and Automatic Control, Kielce University of Technology, Tysiąclecia Państwa Polskiego Str. 7, 25-314 Kielce, Poland

Energies, 2022, vol. 15, issue 10, 1-12

Abstract: This paper presents the design of a permanent magnet generator for a gearless backyard wind turbine. The magnetisation characteristics of the rotor steel and the stator at different field strength ranges were considered at the design stage and mathematically described using a model in Matlab. The detailed calculations and the design of the planar model were carried out using FEMM software. The high-quality results obtained from the calculations shown in the paper made it possible to make a real model of the generator. This paper presents views of the stator package, the rotor, the entire generator and selected test results. The parameter of this turbine that distinguishes it from a wide range of manufactured generators is its low, non-standard rotational speed and low breakaway torque, which allows the power plant to start in winds of approximately 2 m/s. Other advantages of this generator is its low weight resulting from the use of a light rotor and light alloys for the generator housing.

Keywords: cogging torque minimization; rotational speed; steel magnetisation; domestic wind turbine; magnet machines (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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