ELECTRIC MACHINE EXCITED BY PERMANENT MAGNETS
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United States of America Patent
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Issued Date -
Sep 27, 2012
app pub date -
Dec 6, 2010
filing date -
Dec 4, 2009
priority date (Note) -
Abandoned
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Abstract
In order to provide a compact and highly efficient electric machine having high power density, an electric machine excited by permanent magnets, comprising a stator and a rotor, is provided. The stator comprises a coil arrangement and the rotor has permanent magnet elements. The coil arrangement comprises a winding and surrounds a flux yoke. The flux yoke comprises at least one limb. Between every two limbs, flux guide parts are arranged that are spaced apart from each other and that are aligned with the ends of the limbs. Neighbouring permanent magnet elements have opposing magnetic orientations and are combined to form a magnet disc. On the side facing away from the limbs of the permanent magnet elements, flux guide parts are arranged. The limbs and the flux guide parts face the permanent magnet elements forming an air gap.
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