Electric Motor Control
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United States of America Patent
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Issued Date -
Mar 19, 2015
app pub date -
Apr 19, 2013
filing date -
Apr 20, 2012
priority date (Note) -
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Abstract
A drive system for a motor includes a drive stage, a control structure arranged to control operation of the drive stage to control drive current to the motor, and a sensor arranged to generate a temperature output indicative of the temperature of a stationary component of the system. The control structure is further arranged to derive from a current indicator, indicative of at least a component of the drive current, and the temperature output, a rotor temperature indicator indicative of the temperature of the motor rotor.
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