Fault protection is commonly available in most of power management chips to date and its accuracy highly praised, mainly in cases where driving rates reach a few Amperes, or even above. In this paper, some of most common techniques for overcurrent protection (OCP) applied to both switching and linear DC/DC supply voltages are revisited and their trade-offs analyzed. Current limitation approache...

Abstract Commutation failure (CF) threatens system safety with traditional HVDCs. To improve the recovery performance from CF, a novel strategy is proposed, where dynamic current ramp limiter introduced to reduce probability of overshot during recovery. The designed based on idea judging state by dc level, high level corresponds risk CF. limit calculated frequency constraint ac systems. Case st...

In this paper performance analysis of Doubly Fed Induction Generator under abnormal condition is analysed. In recent years, this series compensated transmission system will produce unwanted effect of sub synchronous resonance. Super Conducting Magnetic Energy Storage (SMES) provides an efficient damping for sub synchronous resonance that will enhance power system stability in addition to real a...

Chaos and control analysis for the fractional-order nonlinear circuits is a recent hot topic. In this study, model deduced from Buck-Boost converter, its discrete solution obtained based on Adomian decomposition method (ADM). Chaotic dynamic characteristics of system are investigated by bifurcation diagram, 0-1 test, spectral entropy (SE) algorithm, NIST test. Meanwhile, discussed through two d...

A load angle limiter was implemented as an additional function in the existing excitation system to enable operation of synchronous generator entire P-Q diagram according recommendation manufacturer unit B2 "Nikola Tesla B" TPP. The analysis dynamic performance presented this paper consists determining time responses and frequency characteristics control when is active, based on which values in...

This paper summarizes the work done to show finite element modeling results on a high temperature superconductor fault current limiter (FCL). The paper also gives the small mock-up design of the matrix FCL and its finite element model (FEM). It also discusses the limitations of the FEM and explains how the results from the FEM compare with the experimental data derived for the configuration. A ...

The up-gradation of an Electrical power generation network results in higher levels of short circuit fault current. Thereby, the existing protection equipment like circuit breakers, isolators and fuses become under capacity and not capable of withstanding higher short circuit currents. Thus the system is highly vulnerable to the adverse effects of short circuits. Replacing the whole protection ...

In this paper, a second order sliding mode control scheme is utilized for outer voltage loop of three-phase fault current limiter-based dynamic restorer (FCL-DVR) instead conventional proportional integral/proportional resonance (PI/PR) controller. The new strategy improves the performance FCL-DVR against distortion. Furthermore, by using proposed robustness controller, can smoothly switch betw...