Robust Parallel Operated Inverters in Microgrid with SRF(Synchronous Reference Frame) – PLL(Phase Locked Loop) and SRF – Virtual Impedance Compensation Loop for Proportional Load Sharing
Bangar Raju L1, Subba Rao K2
1Bangar Raju L, Research Scholar, Department of Electrical & Electronics Engineering, Koneru Lakshmaiah Educational Foundation, Deemed to be University, (A.P), India.
2Dr. Subba Rao K, Professor, Department of Electrical & Electronics Engineering, Koneru Lakshmaiah Educational Foundation, Deemed to be University, (A.P), India.
Manuscript received on November 22, 2019. | Revised Manuscript received on December 30, 2019. | Manuscript published on December 30, 2019. | PP: 5619-5625 | Volume-9 Issue-2, December, 2019. | Retrieval Number: B5151129219/2019©BEIESP | DOI: 10.35940/ijeat.B5151.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Power flow control is most important in inverter interfaced Microgrids with highly penetrated DERs in islanded mode for their functionality to feed the connected loads. The different types of interfacing inverters connected to DERs, have been discussed for their principle of operation. The conventional inverters with droop control method of, P-f, Q-v alone failed to control with unequal line impedances. New inverters with SRF virtual impedance compensation and SRF-phase locked loop along with droop characterstics have been implemented for defined functionalities in this paper. The design guidelines have been provided and the results are evaluated in Matlab/ Simulink platform to prove the effectiveness of the methodology.
Keywords: DOE-Dept. Of Energy, US-United States, GHG Green House Gas, DERs-Distributed Energy Resources , MPPT Maximum Power Point Tracking, DG-Distributed Generators , P-Active power, Q-Reactive power, ESD-Energy Storage Device, SOC- State Of Charge,. CCM-Current Control Mode, VCM Voltage Control Mode, DG- Distributed Generators, WT-Wind Turbine.