Controller for AC rotating machine and controller for electric power steering
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United States of America Patent
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Dec 18, 2018
Grant Date -
Nov 9, 2017
app pub date -
Jan 22, 2015
filing date -
Jan 22, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
This invention is concerning a controller for an AC rotating machine, this controller having an estimated sum current computing unit configured to output, as estimated sum current, a sum of current of a first winding and current of a second winding when it is determined that the current of the first winding can be detected, and maintain the estimated sum current which has been outputted as a previous value when it is determined that the current of the first winding cannot be detected. When it is determined that the current of the first winding cannot be detected, a first voltage command for the first winding is computed based on an estimated current value of the first winding, which has been calculated by subtracting the current of the second winding detected by the second current detector, from the estimated sum current output from the estimated sum current computing unit.
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