TITLE:
The Study on New Solid-State Breaker and Its Over-voltage Suppression Technique
AUTHORS:
Longji Zhu, Yan Zheng
KEYWORDS:
Solid-state Breaker; IGCT; Over-voltage Suppression; Current Release Circuit
JOURNAL NAME:
Energy and Power Engineering,
Vol.5 No.4B,
November
18,
2013
ABSTRACT: A design scheme of the intelligent SSB (Solid State
Breaker) based on the IGCT (Integrated Gate Commutated Thyris- tor) is
presented. The topology of switch module and the structure of the SSB are
proposed. Firstly, to the IGCT’s over-voltage sensitivity problem, a new technique
of reducing the over-voltage is introduced, which releases the elect romantics
energy of faulty line by a capacitive current branch to reduce the amplitude of
over-voltage. Secondly, the principle of over-voltage suppression with current
release branch is analyzed, and the overall control scheme of solid- state
breaker is put forward. Finally, the simulation results also demonstrate its
obvious effectiveness in over-voltage suppression after adding a current release
branch into the SSB.