This paper presents four types of time domain control techniques for generation of real time compensating current with a view to the problem of source current harmonics caused by non-linear loads in three phase three wire shunt active filters. All the techniques are analyzed mathematically and simulation results are compared in terms of compensation performance with multi parameter under steady...

in this paper a comprehensive approach is presented to improve power swings damping based on direct lyapunov method. the approach combines superconducting magnetic energy storage (smes) system with static synchronous compensator (statcom). considering the energy absorption/injection ability of smes, in transient states the combination exchanges both active and reactive powers with power system....

This paper focuses on three commonly used sensorless methods based on high-frequency signal injection; namely, the rotating sinusoidal injection in the stationary reference frame, the pulsating sinusoidal injection in the estimated synchronous reference frame, and the pulsating square wave injection in the estimated synchronous reference frame. Although these methods have found applications in ...

In this paper a comprehensive approach is presented to improve power swings damping based on direct Lyapunov method. The approach combines superconducting magnetic energy storage (SMES) system with static synchronous compensator (STATCOM). Considering the energy absorption/injection ability of SMES, in transient states the combination exchanges both active and reactive powers with power system....

With the increased prevalence of power converters in systems, especially three-phase voltage source (VSCs), stability analysis electronics-based systems has received much attention recently. To this end, different impedance models, such as dq -domain, sequence-domain, and phasor-domain models among others, have been developed for VSCs recent years. A common trend all these which no noticeable p...

This paper presents a review of DSTATCOM Topologies and power quality control Techniques. The used topologies are Three-phase Three-wire four-wire techniques Instantaneous reactive theory(IRP), Synchronous Reference Frame Theory(SRF), Model Predictive Control (MPC), Sliding mode control(SMC), Adaptive Neuro-fuzzy interface systems(ANFIS) Artificial intelligence based controllers. These to mitig...

This article analyzes the global stability of synchronous reference frame phase-locked loops (SRF-PLLs) from a large signal viewpoint. First, large-signal model SRF-PLL is accurately established, without applying any linearization method. Then, according to phase portrait and Lyapunov argument, performance discussed in nonlinear frame. Compared with small-signal analysis methods, proposed analy...

<span>In this paper, <span>a voltage source inverter is utilized as a distributed static compensator (DSTATCOM). The DSTATCOM used for the elimination of harmonics caused by nonlinear load. reference currents were estimated with synchronous frame (SRF). Conventionally, SRF uses voltage, load current and filter to compute track desired DSTATCOM. sliding mode controller feedback linea...

In this manuscript, we propose a single-phase UPC (universal power compensator) system to extensively tackle quality issues (voltage and current) with an equal VAR (volt-ampere reactive) sharing approach between the series shunt APF (active filter) of system. The feature facilitates inverters be rating. An SRF (synchronous reference frame)-based direct PA (power angle) calculation technique is ...

The three-phase four-wire VSCs voltage source converters are used to connect sustainable sources the distribution system where loads predominantly single-phase. with unbalanced neutral has unwanted negative and zero sequence components. In this condition synchronism between VSC electrical grid that is done using PLL (Phase Locked Loop) affected. SRF-PLL (Synchronous Reference Frame-PLL) popular...