Open AccessVirtual active power filter: a notable feature for hybrid ac/dc microgrids
Author(s) -
Khederzadeh Mojtaba,
Sadeghi Meisam
Publication year - 2016
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2016.0217
Subject(s) - ac power , computer science , power (physics) , electronic engineering , inverter , rectifier (neural networks) , direct current , filter (signal processing) , voltage , engineering , electrical engineering , physics , quantum mechanics , stochastic neural network , machine learning , recurrent neural network , artificial neural network
The coexistence of ac and dc subgrids is going to be inevitable in microgrids (MGs). This study introduces a virtual active power filter (APF) to improve the power quality of a grid connected hybrid ac/dc MG. In this approach, the dc subgrid and the IC are integrated to form a virtual APF. Thus, an enhanced control method for IC is proposed that improves the performance of hybrid ac/dc MG under non‐linear load conditions considering power quality of both ac and dc subgrids. The proposed control ensures acceptable power quality for both inverter‐based and rectifier‐based power transfer between ac and dc subgrids. Furthermore, the IC provides stable dc bus voltage for the dc subgrid and exchange power between the ac and dc buses, properly. A hybrid ac/dc MG is simulated using PSCAD/EMTDC software and various set of simulation studies is presented to validate the effectiveness and advantages of the proposed control method. Furthermore, experimental results are provided to validate the mentioned properties. These features have not been previously discussed in the literature for virtual APF in hybrid ac/dc MGs, where existing APFs are mostly presented for unidirectional power flow applications such as distributed generators.