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A series stacked IGBT switch to be used as a fault current limiter in HV high-power supplies

Mohsenzade, S ; Sharif University of Technology | 2021

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  1. Type of Document: Article
  2. DOI: 10.1109/JESTPE.2021.3061093
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2021
  4. Abstract:
  5. The safe operating condition for the vacuum tubes is very important and critical since they are very expensive and delicate. Providing limited short circuit energy for the vacuum tube and fast transferring from the short circuit to the nominal operation state are absolutely necessary. Extant protection strategies threat the availability of the vacuum tubes. In addition, they cannot completely protect the tube due to the delay of the fault detection system. This article proposes a high voltage (HV) short circuit fault current limiter which can limit the short circuit energy of the system inherently. The proposed structure activates automatically when the current exceeds the predetermined value. Hence, the need for the fault detection unit is minimized. The proposed short circuit fault current limiter is based on the series insulated gate bipolar transistors (IGBTs). Due to the interesting current limiting feature of the IGBTs, the short circuit current is limited for a definite time. During this time interval, the vacuum arc interrupts and the tube can operate instantaneously. In order to provide a safe operating condition of the series-connected IGBTs in the short circuit fault, several external circuits are suggested. The proper operation of the proposed short circuit fault current limiter is evaluated using simulations and experimental prototyping. © 2013 IEEE
  6. Keywords:
  7. Electron tubes ; Fault detection ; Insulated gate bipolar transistors (IGBT) ; Tubes (components) ; Vacuum applications ; Current limiting ; External circuits ; Fault detection systems ; Nominal operations ; Protection strategy ; Safe operating conditions ; Short circuit fault current limiter ; Short-circuit fault ; Fault current limiters
  8. Source: IEEE Journal of Emerging and Selected Topics in Power Electronics ; Volume 9, Issue 5 , 2021 , Pages 6300-6314 ; 21686777 (ISSN)
  9. URL: https://ieeexplore.ieee.org/document/9360643