FIELD: electricity.
SUBSTANCE: control unit of AC rotating machine comprises control tool to receive current vector command and current vector for detection as input data and for output of voltage vector command to AC rotating machine, tool for computation of AC amplitude against at least one parallel component and orthogonal component in regard to the voltage vector command, tool for generation of AC amplitude command out of current vector command and tool for computation of magnet pole position in order to compute estimated position of AC rotating machine magnet pole so that AC amplitude coincides with AC amplitude command.
EFFECT: reduced vibration and noise.
8 cl, 24 dwg
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