Power Quality Improvement in Autonomous Microgrids Using Multi-functional Voltage Source Inverters: A Comprehensive Review

Miveh, Mohammad Reza; Rahmat, Mohd Fadli; Ghadimi, Ali Asghar; Mustafa, Mohd Wazir

doi:10.6113/jpe.2015.15.4.1054

Cited by 40 publications

(28 citation statements)

References 68 publications

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“…A review of power electronics-based microgrids has been presented discussing the microgrid configurations and the possible structure options and control methods of DER units [35], while a comprehensive review of power quality improvement in autonomous microgrids has also been discussed emphasising the application of multi-functional voltage source inverters [36]. The research on some aspects of stability in microgrids has been published focusing on the stability aspects of remote, utility-connected and facility microgrids, and the modes of operation, control topology, types of micro sources and the network parameters [37].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, some of the studies presented the review of protection challenges and principles relating to microgrid systems [10,16,25,35,39], while the contributions on the techno-economic and impact analysis and application of rural microgrids were made in [18,32,38]. A review of classification of topologies of hybrid microgrids, classification of topologies and optimal considerations were achieved in [20,27,29], while the remaining contributions are based on the concept, stability and power quality issues of autonomous microgrid systems [30,31,36,37].…”

Section: Introductionmentioning

confidence: 99%

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Challenges of Microgrids in Remote Communities: A STEEP Model Application

2018

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Abstract:There is a growing interest in the application of microgrids around the world because of their potential for achieving a flexible, reliable, efficient and smart electrical grid system and supplying energy to off-grid communities, including their economic benefits. Several research studies have examined the application issues of microgrids. However, a lack of in-depth considerations for the enabling planning conditions has been identified as a major reason why microgrids fail in several off-grid communities. This development requires research efforts that consider better strategies and framework for sustainable microgrids in remote communities. This paper first presents a comprehensive review of microgrid technologies and their applications. It then proposes the STEEP model to examine critically the failure factors based on the social, technical, economic, environmental and policy (STEEP) perspectives. The model details the key dimensions and actions necessary for addressing the challenge of microgrid failure in remote communities. The study uses remote communities within Nigeria, West Africa, as case studies and demonstrates the need for the STEEP approach for better understanding of microgrid planning and development. Better insights into microgrid systems are expected to address the drawbacks and improve the situation that can lead to widespread and sustainable applications in off-grid communities around the world in the future. The paper introduces the sustainable planning framework (SPF) based on the STEEP model, which can form a general basis for planning microgrids in any remote location.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Challenges of Microgrids in Remote Communities: A STEEP Model Application

2018

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“…The isolated microgrids can be defined as a group of dispersed generators, communication systems, protection devices, sensitive loads, distributed energy storage systems (DESSs) and power electronic interfaces connected through a relatively small grid and isolated from the main grid [1][2][3][4]. The distributed generations (DGs) and DESSs such as batteries and wind turbines must be equipped with power electronic interfaces to provide the required flexibility for isolated microgrids [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Improved Voltage Unbalance and Harmonics Compensation Control Strategy for an Isolated Microgrid

et al. 2018

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This paper suggests an enhanced control scheme for a four-leg battery energy storage systems (BESS) under unbalanced and nonlinear load conditions operating in the isolated microgrid. Simplicity, tiny steady-state error, fast transient response, and low total harmonic distortion (THD) are the main advantages of the method. Firstly, a new decoupled per-phase model for the three-phase four-leg inverter is presented. It can eliminate the effect of power stage coupling on control design; thus, the three-phase four-leg power inverter can be viewed as three single input single output (SISO) control systems. Then, using an improved orthogonal signal generation method, the per-phase model of the four-leg inverter in the stationary and synchronous frame is derived. As the second step, a per-phase multi-loop control scheme for the four-leg inverter under unbalanced load conditions is suggested. The proposed control strategy has the ability to provide balanced output voltages under unbalanced load conditions by avoiding the need to deal with the symmetrical components. Finally, a multi-resonant harmonic compensator is used to actively prevent low-order harmonic currents to distort the output voltages of the three-phase four-leg grid-forming power converter. Simulations results are also presented to verify the performance of the suggested control strategy.

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“…With the high penetration of various sustainable energy sources, Microgrids have been proposed to integrate multiple DGs and loads for different operation conditions [4]- [7].…”

Section: Introductionmentioning

confidence: 99%

Hybrid Control and Protection Scheme for Inverter Dominated Microgrids

Xu¹,

Wen²,

Jiang³

et al. 2017

Journal of Power Electronics

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With the high penetration of various sustainable energy sources, the control and protection of Microgrids has become a challenging problem considering the inherent current limitation feature of inverter-based Distributed Generators (DGs) and the bidirectional power flow in Microgrids. In this paper, a hybrid control and protection scheme is proposed, which combines the traditional inverse-time overcurrent protection with the biased differential protection for different feeders with different kinds of loads. It naturally accommodates various control strategies such as P-Q control and V-f control. The parameter settings of the protection scheme are analyzed and calculated through a fast Fourier transform algorithm, and the stability of the control strategy is discussed by building a small signal model in MATLAB. Different operation modes such as the grid-connected mode, the islanding mode, and the transitions between these two modes are ensured. A Microgrid model is established in PSCAD and the analysis results show that a Microgrid system can be effectively protected against different faults such as the single phase to ground and the three phase faults in both the grid-connected and islanded operation modes.

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Power Quality Improvement in Autonomous Microgrids Using Multi-functional Voltage Source Inverters: A Comprehensive Review

Cited by 40 publications

References 68 publications

Challenges of Microgrids in Remote Communities: A STEEP Model Application

Challenges of Microgrids in Remote Communities: A STEEP Model Application

Improved Voltage Unbalance and Harmonics Compensation Control Strategy for an Isolated Microgrid

Hybrid Control and Protection Scheme for Inverter Dominated Microgrids

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