Improving the torque density of C-GEN Direct Drive Axial Flux Air Cored Permanent Magnet Generator
In the energy sector, the fossil fuels available are being exhausted and to support the increase in energy demand and reduction of greenhouse gases, countries are looking towards renewable energy. Wind power offers many advantages, which explains why it's one of the fastest-growing energy source and it is expected to continue to flourish as countries seek to reduce their carbon footprint. The newer wind turbines are better at generating wind power, especially in variable wind speeds. They have bigger rotors, higher towers, and lighter blades which increases the capacity of the turbine, therefore, improving reliability and e ciency. Nevertheless, as wind turbines grow increasingly in size and weight, this can make it di cult to manufacture and to transport the generator as a whole. The C-GEN air-cored permanent magnet machine o ers many attractive advantages over existing generator technologies used for direct drive. It's modular concept makes it easy to assemble and disassemble for transportation, manufacture and repairs. The output power depends on the number of stages among other factors, which gives rise to the idea of stackability. This thesis lays out the concept and operating principles of Halbach arrays and applies it to a C-GEN Axial Flux Air-Cored Permanent Magnet Generator. The machine is analysed using analytical methods and 2D/3D FEA simulations. A conclusion of the undertaking is given with a brief discussion of possible design considerations in a bid to nd a highly torque-dense generator.