IMPLEMENTATION OF SHUNT RESONANT STEP UP FAULT TOLLERANT DC-DC CONVERTER
Author(s):
NANDAGOPAL V, VINODH N, KARTHIGA D
Keywords:
Abstract
The project deals with Parallel Resonant Converter for the case of failure in one semiconductor, which could drastically reduce the need of redundancy. Using the proposed scheme, the full-bridge based SRC can be reconfigured in a half-bridge topology, in order to keep the converter operational even with the failure [open circuit (OC) or short circuit (SC)] of one switch. As a drawback of this technique, the output voltage drops to half of its original value. Therefore, a novel reconfigurable rectifier based on the voltage-doubler topology is proposed as a solution to keep the output voltage constant after the fault. The basic operation of the PRC based on the FB and HB topologies was described. Then, a semiconductor SC fault case is evaluated for the FB-PRC and a reconfiguration scheme, in which the FB-PRC operates as anHB-PRC, is presented.
As a result of the reconfiguration, the output voltage is reduced. To overcome this problem a modified rectifier that can be reconfigured in a voltage-doubler rectifier, keeping the output voltage constant is proposed. This PRC topology has been majorly used in SST(Solid State Transformer) in order to get a uniform output regulation. The major advantage of this method is that it reduces the redundancy (i.e the ability to make system work even with a failure component).Using this topology we can achieve the output voltage ,which is same as before the failure of component.
Article Details
Unique Paper ID: 145904
Publication Volume & Issue: Volume 4, Issue 11
Page(s): 665 - 667
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