active filters have proven to be more effective than passive techniques to improve power quality and to solve harmonic and power factor problems due to nonlinear loads. this paper proposes a control scheme based on the instantaneous active and reactive power. the inverter of this active filter is a three-phase, two-level converter. space vector technique is used as modulators and pattern genera...

a r t i c l e i n f o a b s t r a c t Automatic transcription of polyphonic music is an important task in audio signal processing, which involves identifying the fundamental frequencies (pitches) of several notes played at a time. Its difficulty stems from the fact that harmonics of different notes tend to overlap, especially in western music. This causes a problem in assigning the harmonics to...

The efficient parameter estimation of harmonics is required to effectively design filters mitigate their adverse effects on the power quality electrical systems. In this study, a fractional order swarming optimization technique proposed for normally present in industrial loads. particle swarm (FOPSO) estimates amplitude and phase parameters corresponding first, third, fifth, seventh eleventh ha...

Pulse wave propagation and reflection in the branching systems of viscoelastic tubes and complex resistances as a model of arterial vasculature is considered. Axisymmetric wave motion of a viscous incompressible liquid in the system is investigated in application to the pressure and flow wave propagation in the system. Expression for the input admittance of the system taking into account wave r...

The traditional infrastructure of power system industry is presently going through large amount of change that consensus over the improvement of power quality for fulfilling this requirement electronically automated devices having high sensitivity toward the disturbance in the power system signals are under the major consensus of research activities. The low power quality signal is responsible ...

The generalized adoption of power-electronic-based loads in residential networks is leading to increasing concern about harmonic distortion levels. At the same time, distribution systems are insufficiently monitored provide a reliable analysis limits compliance at point common coupling customers. To address this problem, paper proposes practical method estimate voltage levels real time all conn...

A fundamental problem with electrical systems' power quality is harmonics. In order to limit harmonics and their effects on systems, filters used in electric systems must be designed the consideration of The study's suggested approach differs from other hybrid strategies that have been previously published, processes are expected mostly center cutting down computing complexity time. voltage cur...

shaded pole induction motors, despite the simplicity and low cost, are difficult to analyze particularly in the equivalent circuit methods, due to the asymmetric structure, saturation, harmonics, inaccurate estimation of leakage inductances and skew. hence, 3d numerical methods could be very useful in the design and optimization stage. this paper presents the 3d transient finite element analysi...