Multilevel inverters supplied from equal and constant dc sources almost don’t exist in practical applications. The variation of the dc sources affects the values of the switching angles required for each specific harmonic profile, as well as increases the difficulty of the harmonic elimination’s equations. This paper presents an extremely fast optimal solution of harmonic elimination of multile...

objective(s)  garlic (allium sativum) is known as a potent spice and a medicine with broad therapeutic properties ranging from antibacterial to anticancer, and anticoagulant. one of the major purified garlic protein components is the 47 kda protein. in this study, the effect of 47 kda protein extracted from aged garlic (age) was evaluated on mouse dendritic cell (dc) maturation in vitro. materi...

Renewable electricity options, such as fuel cells, solar photovoltaic, and batteries, are being integrated, which has made DC micro-grids famous. For micro-grid systems, a multi input interleaved non-isolated dc-dc converter is suggested by the use of coupled inductor techniques. Since it compensates for mismatches in photovoltaic devices allows separate continuous power flow from these sources...

renewable energy sources like wind, sun, and hydro are considered as a reliable alternative to the traditional energy sources such as oil, natural gas, or coal. this paper describes modeling and simulations to determine a method for the power performance evaluation of autonomous wind turbine system. a speed control regulator is utilized to control the dc bus voltage. the inverter gate’s signals...

PV systems are penetrating the energy generation market rapidly. system output strongly depends on environmental conditions. As a result, utilization of power electronic converters is mandatory. On other hand, most modern loads, from small to big ones, based dc, similar renewable sources generating dc. Hence, wide adoption residential dc microgrids (RDCμGs) would be trend soon, following...

Multilevel inverters produce a staircase output voltage from DC voltage sources. Requiring great number of semiconductor switches is main disadvantage of multilevel inverters. The multilevel inverters can be divided in two groups: symmetric and asymmetric converters. The asymmetric multilevel inverters provide a large number of output steps without increasing the number of DC voltage sources an...

objective: it is believed that monocyte isolation methods and maturation factors affect the phenotypic and functional characteristics of resultant dendritic cells (dc). in the present study, we compared two monocyte isolation methods, including plastic adherence-dendritic cells (adh-dc) and magnetic activated cell sorting- dendritic cells (macs-dc), and their effects on phagocytic activity of d...

OBJECTIVE The objective of this study was to compare the conversion degree of six different composite materials (Filtek Z 250, Filtek P60, Spectrum TPH, Pertac II, Clearfil AP-X, and Clearfil Photo Posterior) using three different light sources (blue light-emitting diode [LED], plasma arc curing [PAC], and conventional halogen lamp [QTH]). METHODS Composites were placed in a 2 mm thick and 5 ...