Author : Sandra M and Venkatesh R

Abnormal conditions or faults may occur in the circuit due to inherent problem of the devices connected to the circuit or may due to some external factors. Hence there is a chance for the occurrence of fault even in carefully designed circuits. The implementation of protection scheme is always desirable for any power converter. In this paper, the conditions which can create abnormal voltage stresses in the circuit are initially investigated and analyzed, there after a resistor based protection scheme is implemented for each faulty condition. Closed loop operation of parallel resonant converter is also designed. Design, simulation development and study were accomplished using MATLAB Simulink tool box.

Keywords: Input capacitors, flying capacitors, fault (abnormal conditions), protection, three-level dc-dc converter, parallel resonant converter

Article published in International Journal of Current  Engineering  and Technology, Vol.4,No.2 (April- 2014)