Radial microgrid operation based on a BtB converter

Ortiz, Abnery; Klyapovskiy, Sergey; Østrem, Trond; Sulkowski, Waldemar

doi:10.1109/iecon.2011.6119435

Cited by 5 publications

(3 citation statements)

References 13 publications

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“…Under the grid-connected mode, a microgrid can be integrated into the DN directly via an electromechanical circuit breaker, such as a static switch [6], or indirectly via a converter-based interface, such as a back-to-back (BtB) voltage sourced converter [7][8][9][10][11]. On one hand, the direct connection method has the benefit of simple structure and low investment.…”

Section: Introductionmentioning

confidence: 99%

A novel management scheme of multiple microgrids via a common interface

Deng

Zhang

2015

11th IET International Conference on AC and DC Power Transmission

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This paper comes up with a novel management scheme of multiple microgrids from the distribution system operators' (DSOs) point of view. The management is fulfilled via a common interface, which consists of a master AC/DC converter, a bi-directional DC/DC converter interfacing with central energy storages, and a group of distributed DC/AC converters. This interface provides sufficient decoupling between the distribution network (DN) and microgrids. With this interface, microgrids are turned into manageable units and can corporate together to provide ancillary services to DSOs, while maintaining the independency of each microgrid. The unique transient mode of this multi-microgrid system can also contribute to the fault ride through of DN. The work is validated through several case studies on real time digital simulator (RTDS) platform.

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Section: Introductionmentioning

confidence: 99%

A novel management scheme of multiple microgrids via a common interface

Deng

Zhang

2015

11th IET International Conference on AC and DC Power Transmission

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“…While microgrids are capable of operating as energy islands, they can also exchange power with other microgrids, or main electrical grid for reliability and/or economic reasons. Typically, back‐to‐back voltage source converter (BTB‐VSC) can be used to interconnect two different microgrids [1–3]. However, temperature‐limited electrolytic capacitors are required in BTB‐VSCs.…”

Section: Introductionmentioning

confidence: 99%

Nine‐switch ac/ac current source converter for microgrid application with model predictive control

Gao

2017

IET Power Electronics

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In this study, a current source nine-switch ac/ac converter for microgrid application is presented. In contrast to traditional back-to-back configuration, the number of switching devices in the proposed converter decreases from 12 to 9 with three insulated gate bipolar transistors and three diodes reduced, which achieves simpler structure and lower cost on switching devices. In addition, in comparison with its voltage source counterparts, the proposed converter inherits the advantages of sinusoidal output voltage and current waveform and no use of dc-link electrolytic capacitor. Moreover, a model predictive control (MPC) without weighting factor selection issue is designed for the proposed converter to realise both sides' power flow regulation. Simulation and experiments have been conducted, which validate the effectiveness of the proposed converter and MPC scheme.

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“…INTRODUCTION Nowadays, microgrids are gaining more and more attentions [1], [2]. Typically, the back-to-back voltage source converters are used to interconnect the microgrids [3]- [6]. However, the voltage source converters require bulky and temperature-limited electrolytic capacitors.…”

mentioning

confidence: 99%

Space Vector Modulation for DC-Link Current Ripple Reduction in Back-to-Back Current-Source Converters for Microgrid Applications

Guo

Guerrero

et al. 2015

IEEE Trans. Ind. Electron.

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Abstract-Back-to-back converters have been typically used to interconnect the microgrids. For a back-to-back current source converter, the dc-link current ripple is one of the important parameters. A large ripple will cause the electromagnetic interference, undesirable high-frequency losses, and system instability. Conventionally, with a given switching frequency and rated voltage, the current ripple can be reduced by increasing the dc-link inductor, but it leads to bulky size, high cost and slow dynamic response. In order to solve this problem, this paper reveals that the current ripple can be significantly reduced by adjusting the gate patterns of space vector modulation (SVM) between the rectifier and inverter in a back-to-back converter. The experimental results verify the effectiveness of the proposed method.

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Radial microgrid operation based on a BtB converter

Cited by 5 publications

References 13 publications

A novel management scheme of multiple microgrids via a common interface

A novel management scheme of multiple microgrids via a common interface

Nine‐switch ac/ac current source converter for microgrid application with model predictive control

Space Vector Modulation for DC-Link Current Ripple Reduction in Back-to-Back Current-Source Converters for Microgrid Applications

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