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Simulation and Suppression Measure Analysis of Electromagnetic Radiation Interference Due to Frequency Converters in Coal Mines

Author

Listed:
  • Zhonghua Xin

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
    EMC Lab, CCTEG China Coal Research Institute, Beijing 100013, China)

  • Huijuan Wang

    (Shuozhou Power Supply Company, State Grid Shanxi Electric Power Company, Shuozhou 036000, China)

  • Longpeng Sui

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

  • Yujia Lu

    (Transportation Technology Research Institute, CHN Energy Group, Beijing 100089, China)

  • Xiaodong Zhang

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
    School of Electrical and Electronic Engineering, Cangzhou Jiaotong College, Huanghua 061199, China)

  • Rui Chen

    (School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China)

Abstract

Nowadays, due to their characteristics of high efficiency and energy saving, frequency converters are used in coal mine excavation machines and ventilation machines. They can cause serious electromagnetic radiation interference with the surrounding monitoring, sensing and other equipment. Therefore, it is necessary to explore the electromagnetic interference characteristics of mining converters. By choosing a ZJT-75/660SF mine frequency converter as the research object, an antenna model was established, and the method of moments was used to solve the problem. The electromagnetic radiation characteristics of the frequency converter were analyzed, and a field experiment was conducted to verify the effectiveness of the model by comparing the simulation and experimental data. According to the analysis of the electromagnetic intensity distribution characteristics of the near field and far field, the near-field intensity is concentrated in the inner part of the converter, but the far-field intensity has obvious directional characteristics, which are found to provide a reference value for the location of the underground mining converter. Finally, a method is proposed to improve electromagnetic radiation disturbance by changing the structure of the converter’s heat dissipation hole, and the feasibility of this method is verified.

Suggested Citation

  • Zhonghua Xin & Huijuan Wang & Longpeng Sui & Yujia Lu & Xiaodong Zhang & Rui Chen, 2024. "Simulation and Suppression Measure Analysis of Electromagnetic Radiation Interference Due to Frequency Converters in Coal Mines," Energies, MDPI, vol. 17(13), pages 1-17, June.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:13:p:3088-:d:1420232
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