Design and Optimization of Permanent Magnet Flux-Switching Generator Arrangement Spoke by Taguchi Method for Direct-Drive Wind Turbines

Document Type : Research Article

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Department of Electrical Engineering, Shahed University, Tehran, Iran

Abstract

Due to the unique structure of Permanent Magnet Flux Switching Generators (PMFSG), which involves the interaction of permanent stator magnets and rotor teeth, the generated cogging torque is higher compared to that of other permanent magnet machines, resulting in torque ripple, vibration, and noise. A well-designed machine structure reduces vibration and noise in PMFSG generators while also improving generator performance, machine power, and efficiency. According to related research, PMFSGs are an efficient and attractive solution for wind turbine generator applications and small-scale applications. The cogging torque in the PMFS generator is critical. In this study, a permanent magnet flux switching generator with spoke arrangement, a toothed rotor with a single-layer slot, and a permanent magnet inside the stator with less cogging torque and higher output power were constructed. Simulations were carried out using the two-dimensional Finite Element Method (FEM) and optimized using the Taguchi method. The best model design will lower effective cogging torque and ripple cogging torque. Finally, the effectiveness of the proposed optimization approach was validated by comparing it to the base model. As a result, the suggested optimization method can be used to effectively design PMFS machines and other types of PM machines used in renewable applications.

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