An Enhanced Universal Droop Control for Load Sharing in AC Microgrid for Different Load Condition

Govind, D.; Suryawanshi, H. M.; Nachankar, Pratik; Narayana, C.; Singhal, Ankit

doi:10.1109/stpec52385.2021.9718723

Cited by 3 publications

(2 citation statements)

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“…In the literature, there are two main types of load sharing schemes presented, 6,10–15 namely, with and without communication schemes. Communication‐less control schemes (CLCS) are commonly based on conventional droop control (CDC), 2,14–27 while communication‐based control schemes (CBCS) include Master–Slave, distributed, and concentrated controls 6,10,11,28–38 . The CBCS encourage the parallel operation of VSIs in the standalone AC microgrid and avail the absence of circulating current between the VSIs, power sharing independent of line impedance, and excellent dynamic stability in the event of an AC microgrid interruption.…”

Section: Introductionmentioning

confidence: 99%

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An enhanced master–slave control for accurate load sharing among parallel standalone AC microgrids

Govind

Suryawanshi

Nachankar

et al. 2022

Circuit Theory & Apps

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Summary With the advancement of power electronic converters over the last few decades, the capability to integrate solar photovoltaics, wind, diesel generators, batteries, ultracapacitor, and electric vehicles with standalone networks or utility grids has increased. For the reliable operation of standalone networks, accurate load sharing among these sources is required. As a result, several load sharing schemes with inherent merits and related demerits are presented in the literature. This work intends to address shortcomings of earlier reported control schemes with the inheritance of associated merits using the proposed control scheme. The proposed enhanced Master–Slave control, with advanced droop control scheme, is illustrated for Master voltage source inverter with resistive line impedance and improves the steady‐state response by improving voltage and frequency profile. It reduces the voltage drop caused by load effect and droop effect, allowing the voltage and frequency regulation during load changes and distinct load conditions such as balanced linear load, unbalanced linear load, and balanced nonlinear load in standalone alternating current (AC) microgrids. Furthermore, Slave voltage source inverters independently compensate for local load demand. This paper presents precise current control and voltage control design methodology and a mathematical model for voltage control and their performance analysis in time and frequency domain. Finally, the proposed enhanced Master–Slave control for accurate load sharing among parallel standalone AC microgrids validated using real‐time simulator and experimental results is provided to verify the effectiveness of the proposed control scheme.

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Section: Introductionmentioning

confidence: 99%

“…[35][36][37] However, the performance analysis under real-life scenarios, including unbalanced and non-linear loads, is missing. In Govind et al, 38 the improved Master-Slave configuration of an individual AC microgrid for load distribution under distinct load conditions is presented. However, the load sharing among multiple AC microgrids is not addressed.…”

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confidence: 99%