Dynamoelectric machine control method, dynamoelectric machine control device, and drive system
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United States of America Patent
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Aug 10, 2021
Grant Date -
Dec 17, 2020
app pub date -
Feb 23, 2018
filing date -
Feb 23, 2018
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Abstract
A control method includes setting, when a space phase difference of in-phase coils of the respective groups is represented by α, a time phase difference of electric currents to be supplied to the in-phase coils of the respective groups is represented by β, and a time phase difference of carrier frequencies with which the three-phase inverters are PWM-controlled, respectively, is represented by γ, values of β and γ so that any one or both of the following relationships are satisfied: γ=±(α+2β), and γ=±(α−β)/2, based on a result of comparison between a current amplitude of a primary component and a current amplitude of a secondary component of a carrier harmonic current, to control the dynamoelectric machine.
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