Mode Adaptive Droop Control With Virtual Output Impedances for an Inverter-Based Flexible AC Microgrid

Kim, Jae Hong; Guerrero, Josep M.; Rodriguez, P.; Teodorescu, Remus; Nam, Kwanghee

doi:10.1109/tpel.2010.2091685

Cited by 435 publications

(239 citation statements)

References 29 publications

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“…In the parallel system of DG units, when the output active power differs from each other, it may occur that some DG units absorb reactive power while others release [10]. To solve this problem, we need to decouple P and Q.…”

Section: Droop Control Methods With Virtual Impedancementioning

confidence: 99%

An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid

Su¹

2013

ENG

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As there exists sorts of distributed generators in microgrid, an integrated control strategy containing different control methods against corresponding generators should be applied. The strategy in this paper involves PQ control and droop control methods. The former aims at letting generators like PV output maximum power. The latter stems from inverter parallel technique and applies to controlling generators which can keep the network voltage steady to make the parallel system reach the minimum circulation point. Due to the unworthiness of droop control applied in low-voltage microgrid of which the impedance ratio is rather high, the paper adopts the droop control introducing virtual generator and virtual impedance. Based on theoretical analysis, simulation in Matlab is also implemented to verify the feasibility of the strategy.

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Section: Droop Control Methods With Virtual Impedancementioning

confidence: 99%

An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid

Su¹

2013

ENG

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“…9a is the average power obtained from the original instantaneous power with a low-pass filtering process. It should be noted that using the average power obtained through the low-pass filtering is a common practice for droop-controlled DGs in controlling an MG [36][37][38], which helps to mitigate the impact of load unbalance and harmonic distortion on the droop control algorithms. Fig.…”

Section: Robustness Testmentioning

confidence: 99%

Agent‐based distributed and economic automatic generation control for droop‐controlled AC microgrids

Zang

Zeng

et al. 2016

IET Generation, Transmission & Distribution

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Microgrids (MGs) are presented as a cornerstone of smart grid, which can integrate renewable energy sources environmentally, friendly, and reliably. Hierarchical control strategies, i.e. primary droop control, second automatic generation control (AGC), and tertiary economic dispatch (ED), are widely used to control and optimise an MG. However, the gap between large time-scale ED and small time-scale AGC may decrease the economical efficiency of an MG. To address this problem, this study proposes a distributed economic AGC (EAGC) algorithm. The algorithm is fully distributed, as each distributed generator is assigned with an agent and the agents only require the local measurements and communication with its neighbours. Compared with centralised algorithms, the distributed control algorithm is easy to fulfil the plug-and-play requirements and reduces costs to modify the architecture of an MG. Furthermore, the proposed EAGC algorithm is suitable for all possible operation modes of an MG, i.e. islanded mode, grid-connected mode, and transition mode. To improve the robustness against agent loss or communication link fault, the topology of agents' communication network is designed to satisfy the N − 1 rule. The effectiveness of the proposed algorithm is demonstrated through the simulation tests which involve plenty of case studies.

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“…Static/dynamic performance and stability assessment of droop controllers are investigated in [1], [24], and [25]. Constant droop is commonly used for power reference tracking and load sharing in grid-connected and islanded modes, respectively [26], [27]. However, its load sharing performance is susceptible to transmission line impedances [28].…”

Section: Introductionmentioning

confidence: 99%

Distributed adaptive droop control for DC distribution systems

Nasirian

Davoudi

Lewis

et al. 2016

2016 IEEE Power and Energy Society General Meeting (PESGM)

150

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Mode Adaptive Droop Control With Virtual Output Impedances for an Inverter-Based Flexible AC Microgrid

Cited by 435 publications

References 29 publications

An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid

An Integrated Control Strategy Adopting Droop Control with Virtual Inductance in Microgrid

Agent‐based distributed and economic automatic generation control for droop‐controlled AC microgrids

Distributed adaptive droop control for DC distribution systems

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