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Comparison of the Wideband Power Sources Used to Supply Step-Up Current Transformers for Generation of Distorted Currents

Author

Listed:
  • Michal Kaczmarek

    (Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland)

  • Piotr Kaczmarek

    (Institute of Mechatronics and Information Systems, Lodz University of Technology, 90-924 Lodz, Poland)

Abstract

In this paper a comparison of the wideband power sources of a pulse width modulation (PWM) inverter and a power supply composed of an audio power amplifier and a two-channel arbitrary generator is discussed. Their application is to supply a step-up current transformer for generation of the distorted current required to test the transformation accuracy of the distorted currents of the inductive current transformers. The proposed equations allow to calculate the maximum rms values of higher harmonic of distorted currents for its required main harmonic component. Moreover, they also enable the calculation of the maximum rms values of the main harmonic of the distorted current for which the required higher harmonic component may be obtained. This defines the usable bandwidth of the tested power source for their specific load. During work on high inductive impedance, the maximum voltage is the limitation that determines the higher harmonic value. While for resistive loads, the maximum current and the transistor’s slew rate are the limiting factors. The usage of the compensation system for the inductive reactance of the step-up current transformer under supply significantly increased its maximum output current. Its rms value with a 10% higher harmonic component up to 5 kHz was almost 400 A instead 100 A for the PWM-based power source and about 800 A instead 200 A for the power supply system with the audio amplifier.

Suggested Citation

  • Michal Kaczmarek & Piotr Kaczmarek, 2020. "Comparison of the Wideband Power Sources Used to Supply Step-Up Current Transformers for Generation of Distorted Currents," Energies, MDPI, vol. 13(7), pages 1-15, April.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:7:p:1849-:d:343914
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    Citations

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    Cited by:

    1. Dariusz Brodecki & Ernest Stano & Mateusz Andrychowicz & Piotr Kaczmarek, 2021. "EMC of Wideband Power Sources," Energies, MDPI, vol. 14(5), pages 1-14, March.
    2. Michal Kaczmarek & Ernest Stano, 2023. "Review of Measuring Methods, Setups and Conditions for Evaluation of the Inductive Instrument Transformers Accuracy for Transformation of Distorted Waveforms," Energies, MDPI, vol. 16(11), pages 1-17, May.
    3. Michal Kaczmarek & Piotr Kaczmarek & Ernest Stano, 2022. "The Effect of the Load Power Factor of the Inductive CT’s Secondary Winding on Its Distorted Current’s Harmonics Transformation Accuracy," Energies, MDPI, vol. 15(17), pages 1-11, August.
    4. Elzbieta Lesniewska, 2021. "Influence of the Selection of the Core Shape and Winding Arrangement on the Accuracy of Current Transformers with Through-Going Primary Cable," Energies, MDPI, vol. 14(7), pages 1-13, March.
    5. Michal Kaczmarek, 2022. "Two Channels Opto-Isolation Circuit for Measurements of the Differential Voltage of Voltage Transformers and Dividers," Energies, MDPI, vol. 15(7), pages 1-15, April.
    6. Michal Kaczmarek & Ernest Stano, 2021. "Why Should We Test the Wideband Transformation Accuracy of Medium Voltage Inductive Voltage Transformers?," Energies, MDPI, vol. 14(15), pages 1-16, July.
    7. Ernest Stano & Piotr Kaczmarek & Michal Kaczmarek, 2022. "Understanding the Frequency Characteristics of Current Error and Phase Displacement of the Corrected Inductive Current Transformer," Energies, MDPI, vol. 15(15), pages 1-16, July.
    8. Michal Kaczmarek & Artur Szczęsny & Ernest Stano, 2022. "Operation of the Electronic Current Transformer for Transformation of Distorted Current Higher Harmonics," Energies, MDPI, vol. 15(12), pages 1-10, June.
    9. Ernest Stano & Piotr Kaczmarek & Michal Kaczmarek, 2022. "Why Should We Test the Wideband Transformation Accuracy of Inductive Current Transformers?," Energies, MDPI, vol. 15(15), pages 1-12, August.
    10. Elzbieta Lesniewska & Michal Kaczmarek & Ernest Stano, 2020. "3D Electromagnetic Field Analysis Applied to Evaluate the Accuracy of a Voltage Transformer under Distorted Voltage," Energies, MDPI, vol. 14(1), pages 1-16, December.
    11. Michal Kaczmarek & Piotr Kaczmarek & Ernest Stano, 2022. "The Performance of the High-Current Transformer during Operation in the Wide Frequencies Range," Energies, MDPI, vol. 15(19), pages 1-15, September.
    12. Michal Kaczmarek & Piotr Kaczmarek & Ernest Stano, 2022. "Evaluation of the Current Shunt Influence on the Determined Wideband Accuracy of Inductive Current Transformers," Energies, MDPI, vol. 15(18), pages 1-12, September.

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