Robust voltage controller design for an isolated Microgrid using Kharitonov’s theorem and D-stability concept

Habibi, F.; Naghshbandy, Ali Hesami; Bevrani, Hassan

doi:10.1016/j.ijepes.2012.08.023

Cited by 31 publications

(21 citation statements)

References 18 publications

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“…Some applications of robust control for interconnection of generation units are observed in [45] for voltage control, in [46,47,48] for frequency control and in [49] for conditions of unbalance. Particularly, designs based on H ∞ are presented in [50,51,52].…”

Section: Pid Controlmentioning

confidence: 99%

Review of Control techniques in Distributed Power Generation Systems

2020

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In this document are revised different control techniques applied to distributed generation systems, including control of active-reactive power, load-frequency control and the identification and control of island mode operation of the generation units, which are the main themes identified. The different control strategies identified are PID, robust, predictive and fuzzy, with applications in the aforementioned subjects. Particularly, applications for the interconnection of generation units and the control of the electric power conversion system DC-AC (inverter) are observed.

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Section: Pid Controlmentioning

confidence: 99%

Review of Control techniques in Distributed Power Generation Systems

2020

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“…44 "Kharitonov's stability theorem" has been used by many researchers for assessing the robust stability of microgrids, power electronic converters etc. [45][46][47][48] Let the characteristic equation of a system by described by the following:…”

Section: Proof Of Stability-sufficient Conditionmentioning

confidence: 99%

“…Robust stability of an interval polynomial (ie, all family members) is ensured if and only if the four "Kharitonov's polynomial" given below are stable [44][45][46][47][48] More on "Kharitonov's stability theorem" and "zero exclusion condition" are available in Dehkordi et al 45 and are not reiterated here.…”

Section: Proof Of Stability-sufficient Conditionmentioning

confidence: 99%

An accurate current sharing method for an Islandeddroop‐controlled dcmicrogrid without communication between remote buses

Maulik

Das

2020

Int Trans Electr Energ Syst

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Summary The traditional droop control method in a DC microgrid (DCMG) fails to achieve accurate current sharing among parallel‐connected dispatchable units when the connecting feeders have unequal resistances, or when the units supply local loads apart from loads at the common dc bus. In this paper, a novel modification of the droop control strategy (additional feedback term in the outer control loop) is suggested to overcome the above limitations. The proposed method is robust, noise‐resilient, amenable to the “plug and play model”, and employs local measurements, thereby, dispensing with the need for communication between remote nodes. A small‐signal model of the system with the proposed control strategy is derived for carrying out eigenvalue and participation factor analysis. A sensitivity analysis is also carried out to inspect the impact of variation of system parameters on small‐signal stability. The effect of time delay and noise on system small‐signal stability is also studied. A robust stability analysis is also carried out. The proposed control strategy is easily implementable on digital hardware. Time domain simulations using PSCAD (Power System Computer Aided Design)/EMTDC(Electromagnetic Transients including DC) is carried out to validate and compare the performance of the proposed technique vis‐a‐vis other existing methods. Performance of the proposed method is good even with time delay and noise.

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“…A microgrid is a small-scale smart grid that can operate both in a grid-connected mode and in an islanded mode; see e.g. [4]- [9]. The grid-connected mode is used for a cooperative operation of a utility grid and distributed power resources in the networks.…”

Section: Introductionmentioning

confidence: 99%

Robust AC Voltage Regulation of Microgrids in Islanded Mode with Sinusoidal Internal Model

Hayashi

Nagahara

Yamämoto

2017

SICE Journal of Control, Measurement, and System Integration

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: This paper shows that the H ∞ control is an effective tool for electric voltage regulation. We here consider robust AC voltage regulation of microgrids in an islanded mode. When a microgrid is disconnected from a utility grid, it automatically switches to an islanded mode to provide necessary power using a battery system until the grid is recovered.In the islanded mode, it is important to regulate the electric voltage generated in the grid to track a predetermined AC voltage reference. A difficulty is that there exits unmodeled dynamics in the grid that may cause large power fluctuations.To resolve this problem, we adapt the H ∞ control with a sinusoidal internal model to robust AC voltage regulation in microgrids. Simulation and experimental results confirm that the proposed H ∞ control can achieve robust tracking performance.

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Robust voltage controller design for an isolated Microgrid using Kharitonov’s theorem and D-stability concept

Cited by 31 publications

References 18 publications

Review of Control techniques in Distributed Power Generation Systems

Review of Control techniques in Distributed Power Generation Systems

An accurate current sharing method for an Islandeddroop‐controlled dcmicrogrid without communication between remote buses

Robust AC Voltage Regulation of Microgrids in Islanded Mode with Sinusoidal Internal Model

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