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Title: Investigation Converter Circuit "Voltage-Current" for Power Calibrator
Authors: Fomichev, Yury Mikhailovich
Silushkin, Stanislav Vladimirovich
Larioshina, Irina Anatolievna
Keywords: преобразователи; напряжения; токи; питание; калибраторы; преобразователи тока; схемы
Issue Date: 2016
Publisher: IOP Publishing
Citation: Fomichev Yu. M. Investigation Converter Circuit "Voltage-Current" for Power Calibrator / Yu. M. Fomichev, S. V. Silushkin, I. A. Larioshina // Journal of Physics: Conference Series. — 2016. — Vol. 671 : Innovations in Non-Destructive Testing (SibTest 2015) : III All-Russian Scientific and Practical Conference, 27–31 July 2015, Altai, Russia : [proceedings]. — [012053, 6 p.].
Abstract: The paper presents alternative circuits for voltage-current converters to be used in the calibrator of fictitious power. The experimental studies have revealed a number of problems related to the stability of the system in deep feedback and zero level stabilization of the amplifier. The circuit solutions given in the article allow elimination of these problems and improve the accuracy of calibrator current calibration. For example, correction/corrective circuits are used to ensure the stability of the converter at deep depths of the feedback, and operational amplifier based circuit solution and compensation condition are proposed to reduce the additional phase shift. To improve the accuracy of the calibration current values specified by the calibrator we propose to connect the feedback circuit to the measuring current transformer. However, further improvement of the accuracy class of the power calibrator is impossible without modern electronic components.
Appears in Collections:Материалы конференций

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