A novel power distribution strategy for parallel inverters in islanded mode microgrid

Zhang, Xuan; Liu, Jinjun; Liu, Ting; Zhou, Linyuan

doi:10.1109/apec.2010.5433528

Cited by 18 publications

(15 citation statements)

References 8 publications

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“…It should be noted that the LMI (6.134) depends on the average dropout patterns identified by (6.111), which is quite useful in illustrating different operating conditions of the communications network. Remark 6.12 In this section, the X matrix considered in Theorem 6.2 is distinct from the one in [39]. The X matrix incorporates two different elements X 1 and X 2 unlike the X matrix in [39] which contains the same element X .…”

Section: Remark 610mentioning

confidence: 96%

“…The islanded operation of the MG will be the focus of this paper. Several control strategies for the MG have been proposed in the literature including PI controllers in [2,7,14,16,17,19,20,32,39]. Robust H ∞ control is presented in [3,28] for the control of two DG units.…”

Section: Communication Among the Mg Componentsmentioning

confidence: 99%

“…that the measurement after passing through the network exhibits a randomly varying communication delay and is described by [39] …”

Section: Networked Control System Modelingmentioning

confidence: 99%

“…As mentioned in [38] that the need to design a SoS control system which can tolerate packet loss and delays is one of the prime challenges in SoS networked control, we considered a network which is subjected to both delays and nonstationary packet dropouts and the controller stabilizes the system in the presence of these communication infractions. The controller design for such a networked control is presented in [39]. An addition is made in the controller design by introducing a distinctX matrix in the LMI that is used to obtain the controller gain matrices and a realistic approach is adopted to compute the gains.…”

Section: Introductionmentioning

confidence: 99%

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Networked Control of Microgrid System of Systems

Mahmoud¹,

AL-Sunni²

2015

Power Systems

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Economic challenges, technological advancements, and environmental impacts are now demanding distributed generation (DG) in the place of the conventional centralized generation [18]. Power operation companies are now confronted with unprecedented difficulties in terms of meeting the load requirements, consumer satisfaction, and environmental considerations. Thus, DG has received good attention because of its potential to alleviate pressure from the main transmission system by supplying a few local loads [1]. The waste heat generated from the fuel to electricity conversion is exploited by the distributed generation system (DGS) with the help of microturbines, reciprocating engines, and fuel cells to provide heat and power to the customers. Adding to the system distributed energy sources (DES) like photovoltaic (PV) panels, wind turbines (WTs), energy storage devices such as batteries and capacitors, generators extracting energy from other renewable and controllable loads can provide momentous contributions to future energy generation and distribution. Another noteworthy feature is that the carbon emission is reduced to a large extent satisfying the commitment of many nations concerning decrease of carbon footprints [8]. However, the DG faces technical issues regarding its connection to the intermittent renewable generation and feeble areas of the distribution network. Further, owing to the distinct behavior of the DG unlike the conventional load, alteration in power flow results in problems. To counter the irregular behavior and increasing penetration of the DG, the microgrid (MG) was introduced.The concept of MG has received considerable attention owing to its potential to serve as an alternate power source, utilizing unconventional sources and supplying the most critical loads of the main grid in case of a network failure. MGs are low voltage networks or distributed energy systems which provide heat and power to a particular area by employing generators and loads. They have the ability to operate independently and isolate themselves from the main grid in case of a fault [4,5,26]. If proper control techniques are implemented, they may improve the reliability of electrical energy supply. MG comprises of microturbines, WTs, fuel cells, PV

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Section: Remark 610mentioning

confidence: 96%

Section: Communication Among the Mg Componentsmentioning

confidence: 99%

“…that the measurement after passing through the network exhibits a randomly varying communication delay and is described by [39] …”

Section: Networked Control System Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Networked Control of Microgrid System of Systems

Mahmoud¹,

AL-Sunni²

2015

Power Systems

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“…However, one of its disadvantages is that as the load becomes different, a shift of voltage may occur. The authors of [6], [7] have researched this disadvantage. Another disadvantage is that because the power sharing mechanism is in a power loop outside the voltage loop, the power sharing speed is slow.…”

mentioning

confidence: 99%

Study on the Influence of Distribution Lines to Parallel Inverter Systems Adopting the Droop Control Method

Zhang¹,

Liu²,

You³

et al. 2013

Journal of Power Electronics

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This paper takes into account the influence of the different impedances of distribution lines on power distribution among inverters when the inverters are paralleled with the droop control method. The impact of distribution lines on the power distribution of inverters can be divided into two aspects. Firstly, since the distributed generators are in low voltage grids, there is resistive impedance in the distribution lines, which will cause control coupling and reduce system stability. The virtual negative resistive impedance of inverters is adopted in this paper to neutralize the resistive element of distribution lines and thus make the distribution line impedance purely inductive. Secondly, after solving the resistive impedance problem, the difference in the inductive impedance value of distribution lines due to the low density of distributed generators will cause an unequal share of reactive power. With regards to this problem, modification is put forward for the droop control strategy to share the reactive power equally. The feasibility of the design is validated by simulation and experimental results.

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A System of Systems Framework for Microgrids

Mahmoud

AL-Sunni

2015

Power Systems

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A novel power distribution strategy for parallel inverters in islanded mode microgrid

Cited by 18 publications

References 8 publications

Networked Control of Microgrid System of Systems

Networked Control of Microgrid System of Systems

Study on the Influence of Distribution Lines to Parallel Inverter Systems Adopting the Droop Control Method

A System of Systems Framework for Microgrids

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