Method and circuit assembly for current control in 3-phase motors
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United States of America Patent
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Feb 10, 2015
Grant Date -
May 16, 2013
app pub date -
Jul 18, 2011
filing date -
Jul 17, 2010
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Abstract
A method and circuit assembly are provided for controlling the motor current in an electric 3-phase motor, in particular in a 3-phase stepper motor, by a chopper process. For at least two of the three motor connections a respective chopper phase is cyclically activated, while a target motor current supplied for the motor connection in question is injected into the motor connection by a chopper process, while the two other motor connections are connected to each other.
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