Active power filter improvement by new DC link for power quality enhancing
Journal Title: Leonardo Electronic Journal of Practices and Technologies - Year 2015, Vol 14, Issue 26
Abstract
Active Power Filters (APFs) are one of the devices which could be applied for improving the Power Quality (PQ) indices such as harmonics, unbalances and voltage flicker. The most important topics in designing APFs are their correct control and especially suitable DC capacitor control for aforesaid parameters improvement. So in this paper, a new DC voltage link is developed by combining the fuzzy and PI control approaches into the predictive control structure. The presented DC link consists of a Fuzzy-PI Controller (FPIC). So, these parameters are modified by minimizing the errors between the DC link output and reference voltage. Finally, the output signal is added to two reference current achieved by incorporating the p-q theory. This method can almost improve the all PQ parameters such as harmonic, flicker, unbalances, power factor, etc. To test the APF in the worst conditions, an actual power system with nonlinear loads is considered. The aims of this paper are a new DC link of active power filter, power quality improvement based on fuzzy logic controller.
Authors and Affiliations
Hamidreza GOLSHANI, Sayed SHARIATMADAR
Keywords
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