Abstract
This article proposes a multisource distributed generation-based dc/ac grid-interactive microgrid providing quality power to a distribution network featured with a constant power load (CPL). The hybrid dc/ac system is a consolidation of a Permanent Magnet Synchronous Generator (PMSG) based wind turbine, Photovoltaic array, and Battery Energy Storage System (BESS) at a common dc-bus. The BESS system ensures continuous power support and takes care of the infrequent nature of photovoltaic and wind. The decentralized control is applied in the proposed grid-interactive configuration during variable wind speed and solar irradiance source disturbance to achieve three goals, namely, regulating the dc-bus voltage, extracting maximum power from distributed generation, and supplying energy-efficient power to the grid. The control strategy combines Maximum Power Point Tracking (MPPT), phase-locked loop (PLL) for the grid-linked synchronization, reduction of harmonic output current control, active/reactive power (P/Q) control, and virtual droop control used simultaneously. Applying virtual dc bus voltage droop control and MPPT can regulate the proper power-sharing among sources in a dc sub-grid. During the switching of the interlinking converter, high-frequency harmonics are created, which are eventually mitigated by LCL filters employed in the ac bus. Simulations are developed in Matlab Simulink, and it is verified using real-time digital simulator OPAL-RT to ratify the effectiveness of the suggested control strategy.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.