This paper suggests a new control method to modify the virtual impedance performance in unbalanced conditions. The proposed method compensates the voltage drop that occurred due to the virtual impedance and adjusts the voltage of the point of common coupling at a desirable level. To compensate the voltage drop, the reference voltage in the droop control varies according to the proposed algorith...

In this paper, Intelligent water drop algorithm (IWD) is used to analyze single overhead line connected to grid-grounded arrester. In this approach, at first Norton’s equivalent circuit of the overhead line over lossy soil is computed by method of moments (MoM) and then for the problem under consideration, a nonlinear equivalent circuit in the frequency domain is proposed. Finally applying inte...

in this paper, intelligent water drop algorithm (iwd) is used to analyze single overhead line connected to grid-grounded arrester. in this approach, at first norton’s equivalent circuit of the overhead line over lossy soil is computed by method of moments (mom) and then for the problem under consideration, a nonlinear equivalent circuit in the frequency domain is proposed. finally applying inte...

Voltage and current measurements of a laser preionization triggered spark gap switch (50 kV, 18 kA, 100 nsec} reveal a voltage drop across the gap of several kilovolts during the current plateau for a variety of gas mixtures. This voltage drop is much larger than what is generally believed to exist in a spark gap switch during the conduction phase. The reasons for the large voltage drop are exp...

We present a novel input pattern generator for dynamic power network simulation. The obtained patterns successfully identify critical voltage drop areas for a set of industrial designs, which are difficult to be found using functional vectors. The search engine of the pattern generator for worst-case IR voltage drop is based on the multiobjective genetic algorithm. To achieve high coverage for ...

Today’s low-voltage, high-current designs require DC IR drop analysis for off-chip power distribution systems in order to optimize end-to-end voltage margins for every device on the distribution. This article will introduce the basics of IR drop analysis, exemplify the significance of IR drop associated with IC packages and PCBs, and demonstrate typical IR drop simulations for the identificatio...

In recent years, the need for high efficiency and low emission power generation systems has made much attention to the use of fuel cell technology. The solid oxide fuel cells due to their high operating temperature (800 ℃ -1000 ℃) are suitable for power generation systems.Two-component gas flow (H2 and H2O) in the porous media of solid oxide fuel cell’s anode have been modeled via lattice Boltz...

An efficient pad assignment methodology to minimize voltage drop on a power distribution network is proposed. A combination of successive pad assignment (SPA) with incremental matrix inversion (IMI) determines both location and number of power supply pads to satisfy drop voltage constraint. The SPA creates an equivalent resistance matrix which preserves both pad candidates and power consumption...