Electrical machine with dual radial airgaps
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United States of America Patent
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-
May 1, 2012
Grant Date -
Sep 16, 2010
app pub date -
Mar 11, 2010
filing date -
Mar 13, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A switched reluctance machine has an array of poles attached to a stationary holding member to form a stator. The stator has no back-iron. The machine has two arrays of rotor poles, positioned on either side of the stator poles, and circumferentially aligned with each other. When a pair of rotor poles is aligned with a stator pole, a small airgap is formed at each end of the stator pole, across which flux can be driven to produce torque in a rotary arrangement or force in a linear arrangement. When the poles are in the unaligned position, the phase inductance is very low.
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