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      • Real-time estimation control of inductance parameters with 1MHz multi-sampling method using dust core materials for PWM inverter

        S. Kurita,K. Imai,T.Yokoyama,S.Ohasi 전력전자학회 2019 ICPE(ISPE)논문집 Vol.2019 No.5

        In recent years, the switching frequency of power converter is increased due to the progress of the power devices. As the result, passive elements used in power converters can be reduced in the volume. The inductors using dust core material is applied to the PWM inverter to downsize the filter component. In the case of using the dust core inductors, the flux density is saturated for the large inductance current and the inductance parameter is rapidly varied widely due to the inductance current variations. The output characteristics is deteriorated in the case of the conventional control. Two kinds of the deadbeat control methods combined with the disturbance compensation and the inductance estimation with 1MHz multisampling method were proposed to adjust the control gains for the inductance parameter variations. In this paper, the effect of the two kinds methods were verified through simulations and experiments.

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