A Comparative Study of Performance and Manufacturing Costs between Axial and Radial Flux Permanent Magnet Generators Considering Permanent Magnet Shape

Pudji Irasari, Ketut Wirtayasa, Puji Widiyanto, Muhammad Kasim

Abstract


This study compares the performance and cost aspects of two types of machines: axial flux permanent magnet generators (AFPMG) and radial flux permanent magnet generators (RFPMG). Four machine topologies, each generating 600 W at 835 rpm, are analysed, including single-gap AFPMGs with rectangular (RTG) and trapezoidal (TPZ) permanent magnet rotors, as well as single-gap inner rotor RFPMGs with curved (CRV) and RTG permanent magnet rotors. Parameters such as the pole arc coefficient, stator slot dimensions, stator yoke, and magnet volume are constant across all topologies. Simulation using Ansys Maxwell 3D is employed to evaluate the performance of these machines, comparing magnetic flux distribution, air gap flux density, output power, and output torque. Furthermore, a comprehensive cost analysis is conducted based on the price of the weight of the active materials and the price from the local workshop. Results indicate that the RTG AFPMG exhibits the highest output power and power-to-weight ratio. Additionally, it demonstrates the lowest manufacturing cost and cost per power unit ratio compared to other topologies. Therefore, based on technical and economic considerations, this study concludes that the AFPMG with rectangular magnets offers the most favourable choice for practical applications

Keywords


single-side AFPMG, single-gap internal rotor RFPMG, Ansys Maxwell 3D, performance analysis, cost analysis

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References


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DOI (PDF): https://doi.org/10.20508/ijrer.v16i1.15124.g9153

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