Currently, grid-connected Photovoltaic (PV) systems are widely encouraged to meet increasing energy demands. However, there many urgent issues tackle that associated with PV systems. Among them, partial shading is the most severe issue as it reduces efficiency. To achieve maximum power, system utilizes power point-tracking (MPPT) algorithms. This paper proposed a two-level converter for optimiz...

The progression towards smart grids, integrating renewable energy resources, has increased the integration of distributed generators (DGs) into power distribution networks. However, several economic and technical challenges can result from the unsuitable incorporation of DGs in existing distribution networks. Therefore, optimal placement and sizing of DGs are of paramount importance to improve ...

We report here on terahertz (THz) digital holography on a biological specimen. A continuous-wave (CW) THz in-line holographic setup was built based on a 2.52 THz CO(2) pumped THz laser and a pyroelectric array detector. We introduced novel statistical method of obtaining true intensity values for the pyroelectric array detector's pixels. Absorption and phase-shifting images of a dragonfly's hin...

We present a parameter inference algorithm for autonomous stochastic linear hybrid systems, which computes a maximum-likelihood model, given only a set of continuous output data of the system. We overcome the potentially intractable problem of identifying the sequence of discrete modes by using dynamic programming; we then compute the maximum-likelihood continuous models using an Expectation Ma...

Optimal placement of distributed generation (DG) is an essential task for distribution companies in order to operate the network good operating conditions. DG units optimization problem where minimization active power losses considered as objective function. In this paper, hybrid genetic dragonfly algorithm used technique find optimal location and size units. The proposed implemented on IEEE 15...