Variable speed controller for a family of multi-tap motors
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United States of America Patent
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Jul 11, 2006
Grant Date -
N/A
app pub date -
Jul 26, 2005
filing date -
Jul 26, 2005
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Abstract
A system for variable speed motor control provides continuous variable speed motor controller for each motor or motor application within a family of multi-tap motors while using a single controller. The single controller utilizes a wave chop technique providing variable speed motor control through the operating range for each motor tap and seamlessly passes the motor control to each succeeding tap to provide smoothly varying and continuous variable speed motor control throughout the operating range of the multi-tap motor. The system can use a small wave chop firing angle for each tap, thus maximizing the signal to the motor for each tap and minimizing heat build up in the motor. By selecting the controller to operate on a tap basis, an entire family of motors or motor applications can be accommodated with a single controller and apparatus.
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