Control for multi-phase induction motor
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United States of America Patent
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Sep 20, 2016
Grant Date -
May 15, 2014
app pub date -
Jan 23, 2014
filing date -
Aug 11, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method of controlling operation of a multi-phase induction motor may include transmitting a low-speed operation signal by a master computer to a control signal board for low-speed operation of the motor; the control signal board receiving the low-speed operation signal, and in response to the low-speed operation signal, the control signal board sensing that the master computer is not simultaneously transmitting a high-speed operation signal, and in response to receiving the low-speed operation signal and not simultaneously receiving the high-speed operation signal, closing contactors in a power section to transmit power to the motor for low-speed operation, whereby the motor is connected to a source of multi-phase power and operates at low-speed; and the control signal board transmitting a first feedback signal to the master computer that the motor is connected to the source of multi-phase power and is running at low speed.
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