− This paper presents an analysis of Akagi’s pq theory for active filtering under really non-sinusoidal voltage. So, it is ascertained that compensating of alternative parts of instantaneous active and reactive powers establishes a sinusoidal current in the parallel active filter. But this is true under sinusoidal voltage only. The mathematical demonstration is found and it is verified on few p...

The Dynamic Voltage Restorer (DVR) is one of the fast, flexible, and cost effective solutions available in compensating the voltage-related power quality problems in power distribution systems. In this paper is discussed how power quality enhancement of sensitive load is achieved by applying three versions of Autonomous Group Particle Swarm Optimization like AGPSO1, AGPSO2, and AGPSO3 for tunin...

This paper presents design and simulation of Dynamic voltage restorer(DVR) using sinusoidal pulse width modulation (SPWM) & space vector pulse width modulation(SVPWM). It describes the problems of voltage sags & swells and its severe impact on nonlinear loads (or) sensitive loads. DVR is a series connected device used for compensating the voltage sags & swells in distribution system. The detect...

In this paper, we propose a technique for designing low-power fast Fourier transform (FFT) processors with applications in next generation wireless LAN and wireless access systems. The proposed low-power technique is based on the general principle of soft digital signalprocessing [4] where voltage overscaling (VOS) [4] (scaling the supply voltage beyond the critical voltage vdd-crit required fo...

in direct torque control, the selection of an applied voltage vector is based on the measuredparameters at the beginning of the sampling period. the delay between the measurement and the application of the voltage vector is the origin of an extra torque ripple. in this paper, a new predictive controller is proposed for compensating this delay and reducing the torque ripple. the stator current i...

this paper presents a novel method to calculate the reference source current and the referencecompensating current for shunt active power filters (sapfs). this method first calculates theamplitude and phase of the fundamental load current from a recursive algebraic approach blockbefore calculating the displacement power factor. next, the amplitude of the reference mains currentis computed with ...