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Acoustic noise emission of transformers is mainly due to core vibration induced by reluctance force and magnetostriction which is highly dependent on the core material and geometry. This paper investigates the vibration and acoustic noise of nanocrystalline cores with different geometric shapes based on FEM simulation and experimental measurements. Furthermore, the optimal design of medium frequency...
Medium voltage, medium frequency transformers (MFTs) are much smaller in size and weight compared to conventional low frequency transformers. The MFTs are very attractive for applications where full control of the power flow and high power density are required, such as power electronic interfaces in smart grids and traction converter systems. Due to the limitation of high voltage semiconductor switches,...
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