Abstract
In the contemporary landscape of wind energy, low-speed wind turbine technology has gained prominence for its ability to harness continuous power even in conditions of minimal wind velocity. Effective design methodologies are crucial for optimizing the conversion of low-speed wind energy, particularly concerning the Permanent Magnet Generator (PMG) component. Radial Flux Permanent Magnet Generators (RFPMGs) have traditionally been utilized in low-speed wind turbines. However, they are associated with certain drawbacks that can hamper the overall performance of the wind energy conversion system. In response, there is a growing interest in exploring alternative solutions, with Axial Flux Permanent Magnet Generators (AFPMGs) emerging as promising contenders for replacing RFPMGs and overcoming their limitations. This paper introduces a design methodology for a Double-Sided Slotted Axial Flux PMG (DSAFPMGs), aiming to address the shortcomings of RFPMGs. The machine model is developed in the Ansys Maxwell and finite element analysis of machine is perfomed using Altair Flux software packages. A comparative analysis between RFPMG and DSAFPMG is presented, highlighting the advantages of the latter. Furthermore, the efficacy of the proposed 300 W DSAFPMGs is evaluated by comparing it with existing single-sided AFPMGs. Various performance metrics such as magnetic flux distribution, generated voltage, armature current, solid loss, torque production, and efficiency under rated load and speed conditions are assessed to validate the superiority of the proposed design.