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Design of a Compact 1-MV-Class Radial Closing Switch for Tesla Type Generator

Author

Listed:
  • Liang Zhao

    (Science and Technology on High Power Microwave Laboratory, Northwest Institute of Nuclear Technology, Xi’an 710024, China)

  • Lin Zhou

    (Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics, Mianyang 621999, China)

Abstract

The paper presents the development of a megavolt-class SF 6 -insulated radial switch. The switch is used as a crowbar in a MV Tesla-type generator to produce pulsed electric fields in very large volumes, for proof-of-concept experimentation of a novel non-invasive food processing technology. The main features of the switch include: (1) Using SF 6 gas as the insulation gas; (2) a breakdown channel along the radial direction, rather than axial; (3) a compact configuration with its volume limited to 3.2 L. In order to achieve a ruggedized high voltage insulation as well as an enhanced operation safety, the following design techniques were applied: (1) Structures of the switch were well designed to minimize the local electric filed in the cathode triple junctions; (2) the grooves of surface of the insulators that enclose the switch were finely optimized to keep the surface flashover under control; (3) a prolate spheroid geometry of the high voltage electrode was adopted to achieve a better control of the gas breakdown. This paper describes in detail the design and the preliminary test of this switch.

Suggested Citation

  • Liang Zhao & Lin Zhou, 2022. "Design of a Compact 1-MV-Class Radial Closing Switch for Tesla Type Generator," Energies, MDPI, vol. 15(9), pages 1-14, April.
  • Handle: RePEc:gam:jeners:v:15:y:2022:i:9:p:3229-:d:804610
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    References listed on IDEAS

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    1. Dmitry Beloplotov & Dmitry Sorokin & Victor Tarasenko, 2021. "High-Voltage Nanosecond Discharge as a Means of Fast Energy Switching," Energies, MDPI, vol. 14(24), pages 1-9, December.
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