Method and apparatus for controlling a high-speed AC permanent magnet synchronous motor coupled to an industrial turbo engine
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United States of America Patent
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Dec 10, 2002
Grant Date -
Apr 25, 2002
app pub date -
Jul 6, 2001
filing date -
Jan 31, 2000
priority date (Note) -
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Abstract
A method and apparatus for controlling a permanent magnet synchronous motor (8) coupled to a turbo engine such that transient current and steady state current are minimized. The method comprises the steps of, for a given DC bus voltage, determining an acceleration profile as a function of a voltage-offset value, a low-speed rated speed value, a high-speed rated speed value, a first desired speed for warming up the turbo engine, and a second desired speed where the turbo engine has sufficient torque to accelerate to its rated speed without the aid of the permanent magnet synchronous motor (8).
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