Authors : A.P. Munshi, A.A. Munshi and S.G. Kadwane
Abstract: To boost dc voltage, traditional boost converter may be used. But it has many disadvantages like dual stage converter, complexity in control and high losses. On the other side the quasi-Z-Source Converter (qZSC) is an alternative converter that can boost the input voltage. It has many advantages like single stage conversion, lesser losses, reduced component rating and size and providing continuous input current. Quasi-ZSC provides boost capability with single stage conversion which ultimately reduces the switching losses. Quasi-Z-Source Converter based inverter (qZSI) allows the shoot through state which is responsible for the boosting of the input voltage to the higher value and avoids the risk of damaging switches in converter circuit to make the circuit more reliable. Theoretical analysis of boosted voltage and control methods for the qZSI system are investigated in this study. Also, the reliability of the system is evaluated using failure rate models given in Military Handbook MILHDBK 217F.
A.P. Munshi, A.A. Munshi and S.G. Kadwane, 2020. Quasi-Z-Source Inverter Based Grid Tied System: Performance Analysis and Reliability Assessment. Journal of Engineering and Applied Sciences, 15: 2678-2684.