Decoupling control of the non-grid-connected wind power system with the droop strategy based on a DC micro-grid

Chen, Jie; Chen, Jiawei; Chen, Ran; Zhang, Xianjin; Gong, Chunying

doi:10.1109/wnwec.2009.5335795

Cited by 12 publications

(19 citation statements)

References 1 publication

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“…Thus, they suffer from low reliability and high cost. Another solution is the application of the voltage of DC microgrids . By this solution, using a predetermined power‐voltage curve for each source, all sources know their exact share of power per each voltage of the DC microgrid.…”

Section: Principles Of the Voltage Control In Direct Current Microgridsmentioning

confidence: 99%

“…Reference presents a general voltage control method that needs no telecommunication at the expense of the increase of complexities of the introduced voltage control method. Many researches apply droop technique or DC bus signaling to control the voltage of DC microgrids. These general voltage control methods utilize the DC voltage of DC microgrids, instead of telecommunication, to do their job.…”

Section: Introductionmentioning

confidence: 99%

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A novel decentralized voltage control method for direct current microgrids with sensitive loads

Asad

Kazemi

2013

Int. Trans. Electr. Energ. Syst.

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Summary Low‐voltage direct current (DC) microgrids will have a significant position in smart grids. Of course, currently, DC microgrids are mainly used in the areas with sensitive electrical loads. The main issue in these microgrids is the voltage control. In this paper, a practical, reliable, modular, autonomous, and decentralized voltage control method, namely the voltage‐based power‐voltage (VbPV) control method, is proposed for the most common type of DC microgrids, that is, the DC microgrids with sensitive loads. The proposed voltage control method leads to the flattest voltage profile, which is essential for the DC microgrids. Besides, the presented method minimizes the power loss and maximizes the line capacity release. It is noteworthy that the VbPV control method requires no telecommunication infrastructure. Furthermore, contrary to some other DC voltage control methods, it is applicable to different real DC microgrids. Here, some numerical examples are mentioned to discuss and clarify the remarkable achievements of the VbPV control method. The analytic and simulation results confirm the successful performance of the VbPV control method. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Principles Of the Voltage Control In Direct Current Microgridsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A novel decentralized voltage control method for direct current microgrids with sensitive loads

Asad

Kazemi

2013

Int. Trans. Electr. Energ. Syst.

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“…Considering these points, the existing distribution load flow methods used for conventional dc power systems cannot be applied to dc microgrids and distribution systems with DBS control methods. On the other hand, none of the literature dealing with DBS control methods proposed a proper load flow method for the dc power system.…”

Section: Introductionmentioning

confidence: 99%

A novel slack bus-free load flow method for dc microgrids and distribution systems with dc-bus signaling control methods

Asad

Kazemi

2015

Int. Trans. Electr. Energ. Syst.

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SUMMARYA significant section of the future electrical power systems, that is, smart grids, will be dc microgrids and distribution systems. Obviously, the voltage control is one of the important issues of these dc power systems. DC-bus signaling (DBS) control methods, as distributed, autonomous, simple, highly reliable, inexpensive, modular and practical control methods, are one of the most important categories of the voltage control methods in dc microgrids and distribution systems. In the dc power systems with DBS control methods, the determination of the generated power shares of the distributed power sources, as vital entries for the conventional load flow methods, before the execution of a load flow method, is not possible. Also, in these dc power systems, none of the power sources can be considered as a constant voltage source, that is, the slack source. Consequently, the conventional load flow methods are not applicable to dc microgrids and distribution systems with DBS control methods. In this paper, a novel, practical, robust, fast, precise load flow method is presented to overcome the mentioned serious complexities in the dc power systems. The proposed load flow method necessitates the least input data. It determines the generated power shares of all the sources during its execution. Besides, the load flow method necessitates no constant voltage source or slack source. Furthermore, the proposed load flow method benefits from low computational time and the storage requirements and the removal of the ill-conditioned problem. The algorithm validation and the numerical results derived in this paper confirm the accuracy and the remarkable performance of the load flow method.

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“…This configuration results in high efficiency, high reliability, and no frequency or phase control requirements, when compared to the AC interconnection bus [7], [8]. Moreover, it has low distribution and transmission losses, low cost, the possibility to operate across long distances and it does not use transformers, in turn leading to volume and cost reduction [2].…”

Section: Introductionmentioning

confidence: 99%

Integrated Full-Bridge-Forward DC–DC Converter for a Residential Microgrid Application

Roggia

Schuch

Baggio

et al. 2013

IEEE Trans. Power Electron.

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This paper proposes a novel integrated converter topology for interfacing between the energy storage system and the DC bus for a residential microgrid application. The proposed integrated full-bridge-forward DC-DC converter presents the following features: low number of active devices compared to the converters usually applied to similar applications, low input and output current ripple, high voltage ratio, bidirectional power flow, and galvanic isolation. A double-ended forward converter with particularities such as no extra transformer demagnetizing circuit is originated from the integration process. This converter is approached in detail in this paper, including three different clamping circuits which are analyzed and compared. The structure, principle of operation, analysis, transformer design methodology, comparison with the dual active bridge converter, and experimental results of the proposed topology are presented.Index Terms-DC bus interconnection, DC-DC converter, energy storage system, static power converter integration.

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Decoupling control of the non-grid-connected wind power system with the droop strategy based on a DC micro-grid

Cited by 12 publications

References 1 publication

A novel decentralized voltage control method for direct current microgrids with sensitive loads

A novel decentralized voltage control method for direct current microgrids with sensitive loads

A novel slack bus-free load flow method for dc microgrids and distribution systems with dc-bus signaling control methods

Integrated Full-Bridge-Forward DC–DC Converter for a Residential Microgrid Application

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