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In this paper the problem of improving the power quality for single phase power systems is approached. It is considered the particular case of voltage utility distortion due to the presence of a nonlinear load that generates some voltage harmonics in the network. The proposed solution includes a full-bridge serial voltage active filter equipped with a control law that guarantee, besides global internal...
Multilevel converters offer advantages in terms of the output waveform quality due to the increased number of levels used in the output voltage modulation. This advantage is particularly true for cascade H-bridge (CHB) converters that can be built to produce a large number of levels owing to their modular structure. Nevertheless, this advantage comes at the cost of multiple dc links supplied by independent...
In this paper, a novel control algorithm for three-phase four-wire shunt active power filter for the compensation of instantaneous harmonic current components in nonlinear loads is presented. Fundamental signal extraction is carried out using Harmonic Tuned Filter (HTF) without the Phase Locked Loop (PLL). HTF can efficiently determine the fundamental signal components from distorted voltage or current...
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