AC rotary machine control apparatus
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United States of America Patent
Stats
-
Nov 20, 2018
Grant Date -
Oct 26, 2017
app pub date -
Feb 27, 2017
filing date -
Apr 22, 2016
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An AC rotary machine control apparatus is provided with: predriver ICs for giving drive signals to the gates of power converting switching elements bridge-connected to the respective phases of an AC rotary machine; predriver IC output cutting-off switching elements for operating on the basis of a cut-off signal from a calculation processing device having detected an abnormality state of the predriver ICs, and cutting off drive signals given from the predriver ICs to the gates of the power converting switching elements; and a gate driver circuit for becoming conductive on the basis of a signal from the calculation processing device and giving drive signals from a power source circuit to all the gates of the lower arm elements of the power converting switching elements, when drive signals from the predriver Ics are being cut off by the predriver IC output cutting-off switching elements.
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