Direct torque control of AC electric machines
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United States of America Patent
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Nov 28, 2017
Issued Date -
N/A
app pub date -
Feb 26, 2016
filing date -
Feb 27, 2015
priority date (Note) -
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Abstract
This disclosure features an apparatus including a motor controller to generate control signals to control an electric motor. The motor controller includes a first saturation controller to generate a first saturation controller output based on feedback signals associated with the electric motor. The motor controller further includes a duty ratio modulator coupled to the first saturation controller. The duty ratio modulator is configured to determine activation times for a set of voltage vectors based on the first saturation controller output. The motor controller is configured to generate, at each switching cycle, a control signal based on the set of voltage vectors and the activation times for the set of voltage vectors, and provide the control signal for controlling the electric motor.
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