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The arc furnace is an important load which affects the electrical energy quality of the electrical power system. High harmonic current and low power factor are in 20T arc furnace short net. Here we proposed a Mallat algorithm based on multi-resolution analysis of wavelet transform separating the fundamental current and harmonic current, to detect harmonic current in the short net current. Results...
And AC arc furnace is an unbalanced, nonlinear and time varying load, which can cause many problems to the power system quality. Different studies on arc furnaces harmonics analysis can be found in the bibliography of the topic nevertheless it is very difficult obtain an exact model that take into account all the parameters that have influence in the process then for this reason it is necessary to...
Resistance welders are a source of voltage fluctuations and flicker in industrial power distribution systems. The high-reactance welding transformer that limits the welding current creates a low power-factor load. With hundreds of welders, factories may use synchronized welding cycles that lead to annoying flicker. Other facilities use random timing to prevent flicker, but suffer deep voltage-sags...
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