Electricity: motive power systems – Induction motor systems – Primary circuit control
Patent
1995-02-06
1996-12-17
Cabeca, John W.
Electricity: motive power systems
Induction motor systems
Primary circuit control
318803, 318806, 318722, 318807, 363132, 363 98, H02P 540
Patent
active
055857086
ABSTRACT:
A motor control apparatus and method is disclosed for controlling a multiphase AC motor by controlling electrical quantities such as voltage or current applied to the stator of the motor. The apparatus includes a motor command unit for defining a reference signal indicative of a desired motor parameter such as torque, speed, or position, a DC voltage link, a controller, a line-side converter including active switches in a bridge configuration for controlling the bidirectional flow of electrical power between the DC voltage link and a source of AC power, and a motor-side converter including active switches in a bridge configuration for controlling stator electrical quantities by controlling the bidirectional flow of electrical power between the DC voltage link and the motor, where the motor-side converter includes control means responsive to the reference signal for controlling the active switches to produce stator electrical quantities that correspond to the reference signal.
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Erdman William L.
Richardson Robert D.
Cabeca John W.
KENETECH Windpower, Inc.
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