Optimization of a Micro Wind Power Turbine Composed of a Magnetic Gear and Bearingless Generators

This paper presents the design and optimization of a machine concept combining a magnetic gear with two bearingless generators, specifically designed for micro wind turbines. This approach aims to address the challenges of efficient energy conversion at small scales by leveraging the advantages of both components. The magnetic gear enables transmission of mechanical power from low rotational speeds to higher speeds, thereby reducing the overall size of the turbine system. The bearingless generator offers maintenance-free operation, enhancing reliability and reducing operational costs. The study details the design principles, optimization strategies, and parameter selection to maximize performance. Through comprehensive simulations and analyses, the results demonstrate that the optimized system can achieve an overall efficiency of over 93%. The findings indicate that the proposed machine concept is suitable for micro wind turbine applications, providing a compact, efficient, and low-maintenance solution. The paper concludes with a discussion of the benefits, limitations, and future prospects.