Brushless direct current motor with minimized current ripple and method
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United States of America Patent
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-
Mar 2, 1993
Grant Date -
N/A
app pub date -
Oct 10, 1991
filing date -
Oct 10, 1991
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A brushless direct current motor with minimized current ripple and a method is disclosed. The motor system includes commutation current control for controlling the rate of turn-off of the current flowing in the phase being turned-off while simultaneously controlling the rate of turn-on of the current flowing in the phases being excited. This minimizes torque ripple in the motor.
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