Abstract
This paper introduces the design and performance analysis of an interior permanent magnet generator (IPMG) for applications in low speed wind turbine systems. The developed design is based on optimizing the geometry of double-layered permanent magnets (PMs), which are buried in the rotor body of an IPMG. The geometry of the double-layered permanent magnets is optimized and simulated using the 2-D finite element analysis method (FEA). The optimization of the PMs is established based on the induced electromotive force (EMF), harmonic contents of the stator current and torque ripples at low speeds. The optimization shows that the π-shape double-layered permanent magnets geometry is capable of inducing an EMF with the high magnitude and low harmonic contents, along with producing stator currents with the low harmonic contents and minimum torque ripples.
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