In this work, real-time evaluation and steps towards implementation of three different types of power oscillation damping controllers (POD) for fast power electronic devices such as FACTS (flexible AC transmission systems) have been done. The performance of classical POD controllers (lead-lags and phasor estimators) are compared with an advanced adaptive approach. The prerequisite for achieving...

We consider a class of second-order Emden-Fowler equations with positive and nonpositve neutral coefficients. By using the Riccati transformation and inequalities, several oscillation and asymptotic results are established. Some examples are given to illustrate the main results.

This paper deals with the study of a model of self-sustained electrostatic micro Electromechanical system (MEMS). The electrical part contains two nonlinear components: a nonlinear resistance with a negative slope in the current-voltage characteristics and a capacitor having a cubic form as the charge-voltage characteristics. The modal approximation and the finite differences numerical scheme a...

Abstract This paper introduces a novel electromechanical model for calculating electromagnetic excited structural vibrations and structure borne acoustics gearless wind turbines. Therefore, the turbine is explained drivetrain derived to investigate decoupled from aerodynamic excitations. The fed with results an finite element of generator considering air gap width changes torque speed character...

This article is concerned with investigating the nonlinear dynamics of cylindrical resonator a wave solid-state gyroscope. The nonlinearity oscillations caused by properties electrostatic control sensors considered. derived taking into account finite ratio flexure to small gap sensors. equations electromechanical system that in interconnected form describe mechanical gyroscope and electrical ci...

This work investigates the effects of the STATCOM (Static Synchronous Compensator), a FACTS (Flexible AC Transmission Systems) device, on small-signal power system angle stability. This investigation is carried out for a single machine connected to an infinite bus via a loss-less transmission line. The study is based on investigation of the eigenvalues of the linearized power system model in th...

A suspended, doubly clamped single wall carbon nanotube is characterized as driven nano-electromechanical resonator at cryogenic temperatures. Electronically, the carbon nanotube displays small bandgap behaviour with Coulomb blockade oscillations in electron conduction and transparent contacts in hole conduction. We observe the driven mechanical resonance in dc-transport, including multiple hig...

Now a days electrical power consumption has been increased and increasing drastically. So it must be supplied to all the consumers with high reliability and quality. Since the load is unpredicted but only estimated the generation must be equal to load all the times. But due to variations in load there is effect on the power system whether the load is switched on or off suddenly which causes low...

This paper presents a novel development of neuro-fuzzy coordination between Static synchronous series compensators (SSSC) to damp the oscillations in a multi-machine power system. The oscillations in power systems have to be taken a serious note of when the fault occurs in any part of the system, else this might lead to the instability mode and shutting down of the power system. The SSSC based ...

Electromechanical oscillations in a power system often exhibit poor damping when the power transfer over a corridor is high relative to the transmission strength. Traditional approaches to aid the damping of power system oscillations include the use of Power System Stabilizers (PSS). Power system stabilizers are used to generate supplementary control signals for the excitation system in order t...