in this paper, a new circuit is proposed for step-up z-source inverter based on qzsi (quasi-z-source inverter). the proposed topology inherits all advantages of the conventional topology. the proposed topology in comparison with conventional topology reduces the st (shoot-through) duty cycle by over 25% at the same voltage boost factor. theoretical analysis of the proposed qzsi in the st and no...

This paper presents an alternative power conversion topology that can buck or boost the input voltage/current with linear and non-linear load depending upon duty ratio and modulation index in a single stage conversion with the help of Impedance source passive Network (L and C), which is usually known as Z-Source. The buck and boost capabilities of inverters are operated in the shoot through sta...

This paper combines quasi-Z-source into a typical five-level inverter, which includes two dc voltage sources, two quasi-Z-sources and five switching devices. In this structure, the output voltage amplitude is not limited to dc voltage source and it can be increased by quasi-Z-source. Besides, due to nature of Z-source families, this new structure is reliable and higher efficiency. Also, in this...

In vitro propagation of rose has played a very important role in rapid multiplication of species with desirable traits and production of healthy and disease-free plants. Micropropagation using nodal segments of Rosa canina under different combinations of BAP, GA3 and NAA on MS and VS, medium was investigated. The results showed that the highest shoot proliferation was obtained on VS medium cont...

in vitro propagation of rose has played a very important role in rapid multiplication of species with desirable traits and production of healthy and disease-free plants. micropropagation using nodal segments of rosa canina under different combinations of bap, ga3 and naa on ms and vs, medium was investigated. the results showed that the highest shoot proliferation was obtained on vs medium cont...