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Electrical Transients in Industrial Facilities

Author

Listed:
  • Attila Kovács

    (Department of Electrical and Electronic Engineering, Institute of Physics and Electrical Engineering, University of Miskolc, H-3515 Miskolc, Hungary)

  • Judit Somogyiné Molnár

    (Department of Electrical and Electronic Engineering, Institute of Physics and Electrical Engineering, University of Miskolc, H-3515 Miskolc, Hungary)

  • Károly Jármai

    (Department of Mechanical Engineering, Institute of Energy and Chemical Engineering, University of Miskolc, H-3515 Miskolc, Hungary)

Abstract

It is essential to protect control, regulation and data storage units used in automated robotic manufacturing from the consequences of harmful electrical grid harmonics. In this paper, the effectiveness of active/passive harmonic filters built into LED lamps, test benches, and industrial robots was investigated (in the latter two cases, light and heavy load states were applied). Based on network analysis, it was found that the built-in passive harmonic filters of the luminaries were ineffective because the THD of the current was approximately two or three times the permissible value according to the IEEE 519-2022 standard. It was proved that the built-in active harmonic filter of the test bench at a heavy load worked properly, but at a light load it was not effective, while the magnitude of harmonic distortion of the industrial robot exceeded the allowed level (three times the limit at a light load, seven times the limit at a heavy load). Further measurements were also performed at three locations: an engineering room, a gearbox house machine tool, and an office room (where there were no built-in filters). The results proved that in each case, there was a significant exceedance of the limit value. Therefore, protection against harmonics needs to be installed, and then the measurements must be repeated.

Suggested Citation

  • Attila Kovács & Judit Somogyiné Molnár & Károly Jármai, 2024. "Electrical Transients in Industrial Facilities," Energies, MDPI, vol. 17(17), pages 1-33, August.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:17:p:4215-:d:1462654
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    References listed on IDEAS

    as
    1. Tomasz Popławski & Marek Kurkowski, 2023. "Nonlinear Loads in Lighting Installations—Problems and Threats," Energies, MDPI, vol. 16(16), pages 1-15, August.
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