@inproceedings{aee5c3a01d3a46aa91e75aba34039ba4,

title = "Power-sharing based on open-loop synchronization of inverters in an islanded AC microgrid",

abstract = "Accurate and fast estimation of magnitude, frequency, and phase of the grid voltage is an essential part of the synchronization process and power-sharing control among parallel connected inverter-based AC microgrids, while running in islanded mode. Synchronization can be done using both open-loop and closed-loop estimation techniques. The conventional closed-loop synchronization technique used is Synchronous Reference Frame based Phase Locked Loop (SRF-PLL), estimates the phase angle of the grid voltage with a typical settling time of one or multiple fundamental periods. Moreover, the SRF-PLL estimates both, the frequency and phase angle of the voltage in one single loop, thus a jump in the phase angle affects the frequency estimation, which will have a negative impact on the power sharing control. To overcome these issues, this paper proposes an open loop synchronization technique based on Teager-Kaiser Energy Operator (TKEO) and Cross Energy Operator (TKCEO) to estimate the grid voltage frequency and phase angle, respectively. Presented results show that the power-sharing with energy operator based calculations gives a better response when compared to classical SRF-PLL.",

keywords = "AC Microgrid, Phase-locked Loop, VSI, Energy Operator, Power-sharing",

author = "Animesh Sahoo and Kuthsav Thattai and Jayashri Ravishankar and Mihai Ciobotaru",

year = "2018",

doi = "10.1109/IECON.2018.8591713",

language = "English",

isbn = "9781509066858",

publisher = "Institute of Electrical and Electronics Engineers (IEEE)",

pages = "237--242",

booktitle = "Proceedings",

address = "United States",

}