The Y-source impedance network is truly referred to as the origin of magnetically coupled source inverters. key characteristics, including high boost capability and design flexibility, are associated with inductor turn ratio. However, magnetic element brings some practical challenges, such voltage spikes, shoot-through (ST) current, bulky inductors. This article proposes two new inverters clamp...

Single-stage boosting capability of impedance network (IN) inverters makes this family an attractive choice for DC/AC applications with low input DC voltage. A specific time shoot-through (ST) state is required to achieve the voltage gain. Conventionally ST and zero output vector should be applied simultaneously. This constraint limits modulation index increases stress semiconductor devices, pa...

to improve bread wheat salt tolerance, new genetic sources of salt tolerance are indispensable, and this requires a screening of wheat germplasm. in order to evaluate bread wheat germplasm, 34 accessions including; hexaploid wheats (aabbdd), tetraploid (aabb) and wild relative diploids (dd and aa genome) collected from different regions of iran were evaluated under normal vs. salinity stress (n...

The shoot-through (ST) states are essential for the operation of sinusoidal pulse-width-modulation (SPWM) based Z-source inverters. However, insertion state unavoidably leads to output harmonics which is greatly affected by its distribution, especially bipolar modulation schemes. With quantitative analysis, this paper investigates mathematical relationship between and single-phase A modified do...

This paper presents a methodology to apply a novel space vector pulse width modulation control for three phase Z-source inverter. The space vector modulation for the conventional voltage source inverter is modified so that the additional shoot-through states are inserted within the zero states. So zero voltage time period is diminished for generating a shoot-through time, and active states are ...

In this paper, a new structure for buck-boost Z-source converter based on Z-H topology is proposed. The proposed converter consists of two LC networks similar to the conventional Z-source and Z-H converters. One of the characteristics of the proposed structure is that, without any changing in its’ power circuit, it can be used in different conversions such as dc/dc, dc/ac and ac/ac. This unique...

Hypericum perforatum L. (St. Johns’ wort) is the most commercially important species of the genus Hypericum and contains a wide range of components including naphthodianthrones, phloroglucinols, tannins, xanthones, phenolic acids and essential oil. In order to establish an efficient protocol for regeneration, the effects of explant type and plant growth regulators on direct and indirect shoot r...