Frequency Division Based Coordinated Control of Three-Port Converter Interfaced Hybrid Energy Storage Systems in Autonomous DC Microgrids

Wang, Panbao; Liu, Xiaonan; Wang, Wei; Xu, Dianguo

doi:10.1109/access.2018.2830420

Cited by 19 publications

(13 citation statements)

References 33 publications

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“…However, l g is determined by a distance, l d , between L 1 and L 2 . Therefore, the following condition for preventing magnetic saturation can be obtained using B C < B sat , (Equations (14) and (15)) as:…”

Section: Magnetic Saturationmentioning

confidence: 99%

“…Three-port converters have been used to reduce the cost and size of infrastructure, such as micro-grids and smart grids [12][13][14][15][16][17][18]. The infrastructure consists of several systems, so its cost and size increase in proportion to the number of systems.…”

Section: Introductionmentioning

confidence: 99%

“…To alleviate this problem, two systems are integrated through on a three-port converter. The three-port converters usually add a port to a typical converter that has two ports, either by using a three-winding transformer instead of a two-winding transformer [13][14][15] or by using the storage capacitor in the typical converter as a third port [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

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Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Lee

Yun

2020

Energies

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This paper presents a highly efficient three-port converter to integrate energy storage (ES) and wireless power transfer (WPT) systems. The proposed converter consists of a bidirectional DC-DC converter and an AC-DC converter with a resonant capacitor. By sharing an inductor and four switches in the bidirectional DC-DC converter, the bidirectional DC-DC converter operates as a DC-DC converter for ES systems and simultaneously as a DC-AC converter for WPT systems. Here, four switches are turned on under the zero voltage switching conditions. The AC-DC converter for WPT system achieves high voltage gain by using a resonance between the resonant capacitor and the leakage inductance of a receiving coil. A 100-W prototype was built and tested to verify the effectiveness of the converter; it had a maximum power-conversion efficiency of 95.9% for the battery load and of 93.8% for the wireless charging load.

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Section: Magnetic Saturationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Lee

Yun

2020

Energies

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“…Applying the small signal perturbation to (2) and (3), the small signal model of the input and output current can be represented by (4) and (5), where the capital variables represent the steady state values andx represents the small signal variables of x. These rules apply to the entire paper.…”

Section: A Impedance Modeling Of Dab Convertermentioning

confidence: 99%

Impedance Shaping of Isolated Two-Stage AC-DC-DC Converter for Stability Improvement

Fan

Gooi

2019

IEEE Access

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The isolated two-stage ac-dc-dc converter containing an isolated dual-active-bridge (DAB) dc-dc converter and an ac-dc rectifier has been widely used for connecting the dc sources to the ac utility grid. However, the impedance interaction between the DAB converter and the ac-dc rectifier may cause the instability problem. To address this issue, this paper proposes two control methods to reshape the impedances of the isolated two-stage ac-dc-dc converter by building a virtual impedance connected in parallel or series with the input impedance of the DAB converter. The magnitude of the input impedance of the DAB converter is increased to satisfy the Middlebrook criterion without changing its negative resistance characteristics by the proposed control methods. Furthermore, the design requirements for the proposed controllers are also given to ensure the stable operation of the two-stage converter. The comparison of these two proposed methods is also discussed in terms of stabilizing ability, dynamic performance, and cost. The comprehensive experimental results are provided to validate the proposed methods. INDEX TERMS Impedance shaping, modeling, stability criterion, two-stage converter.

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“…To coordinate these converters, droop control, especially virtual resistance based voltage droop control method is the most commonly used solution as primary-level solution. At the same time, different kinds of virtual impedance design has been proposed and widely adopted in stability enhancement [3][4][5], dynamic power management [6][7][8][9], and to improve transient response of the system [10][11]. However, both virtual resistance based droop controller or virtual impedance control method have to face the noise problem of real-world sensor, especially those using inductive virtual component which requires differentiator to realize.…”

Section: Introductionmentioning

confidence: 99%

An Alternative Realization of Droop Control and Virtual Impedance for Paralleled Converters in DC Microgrid

Jin

Guerrero

2018

2018 IEEE Energy Conversion Congress and Exposition (ECCE)

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In this paper, an alternative realization method of droop control and virtual impedance for paralleled converters in DC microgrids is proposed as complement to the existing method. The major feature of the proposed realization is that the virtual impedance behavior is realized by using current reference together with a properly designed low-pass filter. Therefore, it will inherently get rid of the noise problem in real-world measurement, which is critical when realizing inductive virtual components. In addition to that, the impact of low-pass filter used in the proposed method on the dynamic performance is also comparatively studied. To validate the proposed method, simulations and experiments are carried out. The results show that the proposed method can be fully compatible with existing methods. Moreover, the low-pass filter is proven to be optional, however, with a specially designed low-pass filter, the transient response of the system can be modified significantly.

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Frequency Division Based Coordinated Control of Three-Port Converter Interfaced Hybrid Energy Storage Systems in Autonomous DC Microgrids

Cited by 19 publications

References 33 publications

Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Impedance Shaping of Isolated Two-Stage AC-DC-DC Converter for Stability Improvement

An Alternative Realization of Droop Control and Virtual Impedance for Paralleled Converters in DC Microgrid

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