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The choice of switching frequency is a very important issue for the development of Parallel Active Power Filter (PAPF), but so far is lack of discussion in a quantitative manner from previous publications. In this paper, an extensive analysis on the switching frequency to the performance of PAPF is carried out, and a specification of the switching frequency values with different compensation results...
Power distribution feeders are characterised by a high density of load take-off points, which poses a significant challenge for modellers. The loads on these feeders also tend to have a rich spectrum of harmonic emissions. This paper proposes an analytical method for harmonic studies on feeders which approximates the many discrete point loads with a continuous load distribution characterised by a...
Modern induction furnace draws heavy current with considerable distortion in the current waveform. This heavy distorted current causes distortion in the system voltage. Owing to the insulation limitations at 11 KV line, it is very taxing for modern power quality analyzers to capture the exact distorted voltage waveform. However the distorted waveform of current with high amplitude, drawn by induction...
This paper deals with a method for determining the complex permeability in analysis of hysteresis motors. The method assumes that the magnetic intensity distribution is sinusoidal in the direction of rotation. Analysis of the asynchronous speed of a hysteresis motor is then performed for cylindrical coordinates, using modified Bessel functions. The results of calculations are in good agreement with...
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