Faculty Publications

Permanent URI for this communityhttps://idr.nitk.ac.in/handle/123456789/18736

Publications by NITK Faculty

Browse

Filters

2021 - 20222

Settings

Author: search.filters.author.Kulkarni, S.V.Subject: search.filters.subject.Droop control

Search Results

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    Improved droop control strategy for parallel connected power electronic converter based distributed generation sources in an Islanded Microgrid
    (Elsevier Ltd, 2021) Kulkarni, S.V.; Gaonkar, D.N.
    The control and protection are critically essential to facilitate the stable operation of an island microgrid. To accomplish the exact power sharing in an islanded AC microgrid, the frequency and the voltage restoration need to be sustained. In this regard, a robust control strategy pooling an improved droop with a virtual impedance control based droop control for power sharing with f/V restoration is proposed in this article. The proposed droop controller state-space small signal modeling and an investigation for the total microgrid system are presented in this article. Meanwhile, the robustness of the strategy is escalated for a step change in the system power loads. The overall controller performance has been tested in the hardware-in-loop (HIL) test-bed. © 2021 Elsevier B.V.
  • No Thumbnail Available
    Item
    HIL implementation of an islanding detection and an automatic mode switching for droop-based microgrid
    (Inderscience Publishers, 2022) Kulkarni, S.V.; Gaonkar, D.N.
    This paper presents the control schemes and performance study of parallel connected inverter based distributed generation sources (DGs) in microgrid for grid-connected and stand-alone modes of operation. This standalone mode of operation of inverter based DG system is mainly based on droop control scheme with the virtual complex impedance in the outer voltage loop. The microgrid load power is proportionally shared by the DGs according to their power ratings which features a good reliability and efficiency. Both the modes are switched automatically based on the Phase Locked Loop (PLL) phase error sin(γ – θ). This phase error is used to detect the islanding during disturbances in the system and also helps in seamless transfer between the modes. The PLL phase error response, islanding detection and mode switching are presented for various fault conditions. The hardware-in-the-loop (HIL) based platform is used to evaluate the performance of the microgrid in both the modes with islanding detection and automatic mode switching operation. © © 2022 Inderscience Enterprises Ltd.