Current droop control of parallel inverters in an autonomous microgrid

Boddapati, Venkatesh; Kumar, T. Sathesh; Prakash, N. B.; Gunapriya, B.

doi:10.1016/j.matpr.2020.09.496

Cited by 8 publications

(2 citation statements)

References 5 publications

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“…The parallel-type configuration [103,104] (see Figure 27) uses droop control, does not require physical communication links, and is easy to implement [62]. However, all local controllers need to communicate with a central controller, which weakens the reliability and scalability of the system if adequate control strategies are not adopted [53,105].…”

Section: Parallel Typementioning

confidence: 99%

“…In island mode, the decentralized control methods, which mainly include droop control and its variants, are used to achieve frequency synchronization and power-sharing [53]. Additionally, it allows increasing the power capacity and efficiency of the system and reduces the ripple of the output current [105]. However, a two-stage DC/AC power conversion is required to integrate the low-voltage devices into the MG [53,101].…”

Section: Parallel Typementioning

confidence: 99%

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Comprehensive Analysis of Microgrids Configurations and Topologies

Candelo-Becerra

Santos

2022

Sustainability

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Microgrids have been proposed as a solution to the growing deterioration of traditional electrical power systems and the energy transition towards renewable sources. One of the most important aspects of the efficient operation of a microgrid is its topology, that is, how the components are connected. Some papers have studied microgrid topologies; however, these studies do not perform an exhaustive analysis of the types of topologies, their applications, characteristics, or technical advantages and disadvantages. The contribution of this paper is the integration of the most important functional properties of microgrid topologies in terms of reliability, efficiency, structure, costs, and control methods. The study analyzes 21 topologies divided into six classifications with their respective sub-classifications. The analysis was based on the characteristics of the current (AC or DC), the control mechanisms, the transition between the operating modes, and the operating costs. As a result of the evaluation, it was evidenced that SST-based completely isolated coupled AC topologies, completely isolated two-stage AC decoupled, and multiple microgrids show the best performances. In contrast, the use of two-stage and three-stage partially isolated AC decoupled topologies is not recommended because of their high operating cost and low efficiency and reliability.

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