Detection of rotor angle in a permanent magnet synchronous motor at zero speed
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United States of America Patent
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-
Aug 27, 2002
Grant Date -
Oct 18, 2001
app pub date -
Dec 14, 2000
filing date -
Dec 14, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The teachings herein comprise a method and apparatus for determining the position of a rotor by applying a voltage across a pair of phases of a motor and using a voltage measurement responsive to the applied voltage and indicative of the distribution of the phase inductances within the phase pair to which a test voltage is applied to determine the rotor position.
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