Frequency Response Improvement in Microgrids: A Fuzzy–based Virtual Synchronous Generator Approach

Amin Karimi; YousefReza Jafarian; Hassan Bevrani; Rahmatollah Mirzaei

Volume 3, Issue 2 , May 2020, , Pages 147-158

http://dx.doi.org/10.22111/ieco.2019.29879.1174

Abstract
  The use of renewable energy sources in microgrids has grown dramatically in recent years. The absence of a rotational mass in these microgrids and their interfaces leads to a lack of inertia and consequently, frequency and voltage instability. To cope with these dilemmas, the virtual synchronous generator ...  Read More

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Secondary Voltage Control in a Hybrid Microgrid

YousefReza Jafarian; Amin Karimi; Hassan Bevrani

Volume 2, Issue 3 , July 2019, , Pages 221-232

http://dx.doi.org/10.22111/ieco.2019.26749.1083

Abstract
  Compared to individual DC or AC microgrids, the Hybrid microgrids (HMGs) are more efficient and inexpensive due to eliminating of multiple DC-AC-DC conversions. In HMGs, where AC loads are supplied by DC link, load demand disturbance has direct negative effects on the DC link voltage. In this study, ...  Read More