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This paper proposes two newly developed quasi Z-source inverters (QZSI) based on two new diode-cells. The proposed inverters are called continuous diode assisted quasi Z-source inverter (CDQAZSI) and discontinuous diode assisted quasi Zsource inverter (DDQAZSI). These inverters are thoroughly examined in three modes: two-cell QZSI, three-cell QZSI, and n-cell QZSI that is called developed QZSI. Additionally, the equations of the diodes' voltage and current, capacitors' voltage stress, boost factor, inductor currents, and dc-link current are computed. All equations are given for the proposed generalized topologies. The major advantage of these inverters is the potential of deriving desired boost factor value devoid of extra elements. Furthermore, increasing the number of the diode-cells used in the proposed QZSI reduces the values of dc-link current, inductor current, and diode current. Lastly, to verify the performance of the proposed topologies, the practicality of the proposed QZSI is authenticated by experimental results through a laboratory prototype. [ABSTRACT FROM AUTHOR]

In this study, a new topology for switched Z-source inverter is proposed. This inverter in comparison with the conventional Z-source inverter needs higher number of active elements, lower number of capacitors and inductors. Reduction of weight, size and cost are the main advantages of the proposed topology. In addition, this inverter is able to solve the problem of short circuit across the inverter leg and consists of higher value of voltage gain when compared with the conventional switched boost inverter. Moreover, the developed topology of the proposed inverter based on switched-inductor cells is introduced. The performance of the proposed inverter in different operating modes is investigated. The proposed topologies are also compared with the conventional Z-source inverters from different points of view such as number of elements, the voltage gain and capability of tolerate the inverter short circuit. Finally, the accuracy performance of the proposed inverter is reconfirmed by using the simulation results in EMTDC/PSCAD software and also experimental results. [ABSTRACT FROM AUTHOR]