in this paper, a new topology is proposed for three-phase to single-phase matrix converters, where more voltage levels are produced in the output in comparison with the conventional topologies. in addition, a new control method based on minimum error between the generated and the desired output voltages is proposed for three-phase to single-phase matrix converters. in the proposed control metho...

ferulic acid (4-hydroxy-3-methoxycinnamic acid), an effective component of medical plant, is a phenolic acid with low toxicity that can be absorbed and easily metabolized in the human body. the solubility of ferulic acid (fa) is very low in aqueous solutions which can cause problem in preparation of pharmaceutical products, but it can easily be dissolved in oil/water interface of nano-emulsions...

We propose a novel acoustic segment modeling approach to automatic language identification (LID). It is assumed that the overall sound characteristics of all spoken languages can be covered by a universal collection of acoustic segment models (ASMs) without imposing any phonetic definitions. These segment models are used to decode spoken utterances into strings of segment units. The statistics ...

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...

the car safety is important for sustainable development of contemporary automobile industry, the researches of the automotive active and passive safety have been universal concern and attention, when the vehicle frontal collision occurred, and the steering wheel and rigid steering column is the main components to make the driver be injured.Based on the extensive collection of home and abroad re...

This work addresses the major problem of reactive distillation (RD) processes mathematical modeling, revealing also why detecting the presence of a three-phase regime (vapour-liquid-liquid) on the column stages is of utmost importance. In this paper, the authors present in detail their starting modeling approach, which describes the behaviour of a “classic” RD process (where the potential liqui...

A computational homogenization technique for modeling diffusion in concrete is introduced with emphasis on the influence of aggregate content and variability. The highly heterogeneous material investigated different scales by combining Variationally Consistent Homogenization numerical microstructures analytical techniques accounting lower, unresolved, length scales. structure consists cement pa...

Induction Motor especially the squirrel cage type of this motor plays important role in industry. According to the application type, this motor place against various stresses that are caused failure in the motor. The most common failure is related to the Stator winding. Among these failures are turn-to-turn, coil-to-coil and phase to phase faults. Flow the high current do to the induction resul...