Multi-purpose droop controllers incorporating a passivity-based stabilizer for unified control of electronically interfaced distributed generators including primary source dynamics

Azimi, Seyed Mohammad; Afsharnia, Saeed

doi:10.1016/j.isatra.2016.03.019

Cited by 15 publications

(4 citation statements)

References 24 publications

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“…In this way, data transfer between the DERs is avoided and they are operated in a decentralized manner. One of the most renowned decentralized approaches is the droop control approach which deploys the converter output voltage and current signals for control purposes [15]. As renewable energy resources are featured with very low or zero inherent inertia, this issue should be satisfied virtually through effective droop control [16].…”

Section: Open Accessmentioning

confidence: 99%

A new hybrid control technique for operation of DC microgrid under islanded operating mode

Mortezapour

Golshannavaz

Pouresmaeil

et al. 2022

Prot Control Mod Power Syst

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This study proposes a novel combined primary and secondary control approach for direct current microgrids, specifically in islanded mode. In primary control, this approach establishes an appropriate load power sharing between the distributed energy resources based on their rated power. Simultaneously, it considers the load voltage deviation and provides satisfactory voltage regulation in the secondary control loop. The proposed primary control is based on an efficient droop mechanism that only deploys the local variable measurements, so as to overcome the side effects caused by communication delays. In the case of secondary control, two different methods are devised. In the first, low bandwidth communication links are used to establish the minimum required data transfer between the converters. The effect of communication delay is further explored. The second method excludes any communication link and only uses local variables. Accordingly, a self-sufficient control loop is devised without any communication requirement. The proposed control notions are investigated in MATLAB/Simulink platform to highlight system performance. The results demonstrate that both proposed approaches can effectively compensate for the voltage deviation due to the primary control task. Detailed comparisons of the two methods are also provided.

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Section: Open Accessmentioning

confidence: 99%

A new hybrid control technique for operation of DC microgrid under islanded operating mode

Mortezapour

Golshannavaz

Pouresmaeil

et al. 2022

Prot Control Mod Power Syst

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“…This study analyzes the performance of a system with different input parameters and load conditions [17]. Controllers allow MG to work with network-connected mode, offline mode, and temporary modifications using a specialized control design [18]. The main focus is on energy availability and high stability using an integrated hybrid power generation system [19].…”

Section: Introductionmentioning

confidence: 99%

Neural Network Based Control Scheme for Micro-Grid Integrated HRES

Pradeep Kumar Tiwari

2024

jes

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Microgrids and HRES (Hybrid Renewable Energy Systems) are two related concepts that have gained considerable attention in recent years, particularly in the context of decentralized and sustainable energy systems. The integration of renewable energy sources in micro-grids is becoming increasingly important for meeting the electricity needs of rural areas. HRES contains a solar-air-biomass-bio-fuel-fuel cell and battery. Existing works involved sensitive analysis& utilized annual wind speed fluctuations, biofuel prices, energy costs, and net initial contribution costs. However, the instability of renewable materials such as sun and wind complicates the energy production process. In this paper, an optimal HRES configuration consisting of solar, wind, battery, and ultra-capacitor battery system is proposed. To optimize the HRES, a neural network-based control scheme is designed to balance the renewable energy output with peak load requirements, utilizing battery power storage. The proposed optimization strategy ensures the efficient operation of the HRES by minimizing energy losses, reducing carbon emissions, and improving the overall system reliability. The effectiveness of the proposed HRES and control scheme is demonstrated through simulation results. The proposed system contributes to the development of sustainable rural electrification solutions.

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“…Nonlinear stabilisers for AC-MGs have also been implemented for electronically interfaced DGs [23,24]. Other non-linear stabilisers have been designed to damp the power and frequency oscillations in AC-MGs operating in a unified control mode [18,25]. The non-linear stabilisation technique has also been employed in DC-MGs for the integration of photovoltaic (PV) systems [26].…”

Section: Introductionmentioning

confidence: 99%

“…This controller has been designed based on the back-stepping technique and verified in a single source DC-MG. These stabilisers have relatively complicated structures which increase the number of calculations required for practical digital implementations [25,27]. Other nonlinear control design strategies are based on the well-known Lyapunov technique for the stabilisation of non-linear AC systems [27].…”

Section: Introductionmentioning

confidence: 99%