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Influence of p-n Capacity Barrier on Optimal RC Protection of Thyristors

Kuzmanović, Branislav; Baus Zoran; Biljanovic Petar
Influence of p-n Capacity Barrier on Optimal RC Protection of Thyristors // Journal of Electrical Engineering, 58 (2007), 3; 140-145 (podatak o recenziji nije dostupan, članak, ostalo)

Influence of p-n Capacity Barrier on Optimal RC Protection of Thyristors

Kuzmanović, Branislav ; Baus Zoran ; Biljanovic Petar

Journal of Electrical Engineering (1335-3632) 58 (2007), 3; 140-145

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, ostalo

Ključne riječi

Safe operation of the thyristor depends strongly on the critical rate of rise of the off-state voltage, the rate of on-state current, as well as on the recovery overvoltage. The snubber or commutation circuits ensure the required protections of the thyristor. Nevertheless, the design of the snubber circuits is not simple, the protective circuit designed to satisfy the requirements of one quantity will not necessarily perform optimally for another quantity, and a compromise solutions have to be sought. The paper deals with the optimal thyristor snubber design assuming the real thyristor parameters characteristic of the turn-on and turn-off switching intervals of the thyristor. For both modes of operation, the thyristor was replaced by a parallel RC equivalent model, unlike in previous studies, which treated the thyristor as an ideal switch. The analysis study was performed in normalize form to provide a generalized approach. The analysis results are presented by diagrams, for simplification of the selection of required RC elements for particular thyristor protection. The objective of the paper was to evaluate to what extent the choice of protective elements is affected by the RC model parameters of the thyristor and to provide optimal snubber protection for the thyristor. It was demonstrated that the thyristor equivalent capacitance together with other parasitic capacitances, significantly influence the choice of protective components.

Izvorni jezik

Znanstvena područja


Projekt / tema
036-0982904-1642 - Sofisticirane poluvodičke strukture za komunikacijsku tehnologiju (Marko Koričić, )

Fakultet elektrotehnike i računarstva, Zagreb

Časopis indeksira:

  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
  • Scopus