A Dual-Buck–Boost AC/DC Converter for DC Nanogrid With Three Terminal Outputs

Wu, Weimin; Wang, Houqing; Liu, Yuan; Huang, Min; Blaabjerg, Frede

doi:10.1109/tie.2016.2598804

Cited by 48 publications

(40 citation statements)

References 18 publications

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“…In this simulation, it can be seen that power factor correction is done. This is possible only because we use a DC nano grid which keeps the voltage constant [4]. In case of AC nano grid it won't be possible.…”

Section: Fig 9 Pi Simulationmentioning

confidence: 99%

Implementation of Energy Stored For TC Nano Grid With Power Factor Correction Converter

2019

ijeat

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In the recent years DC Nano grid has become more popular which serves as a replacement for the AC- grid due to the DC characterized loads and more distributed power generation sources. The advantage of using DC Nano- grid is that, it provides safety by providing reliable grounding for residential. In this paper, a dual Buck-Boost AC/DC converter to be used in the united grounding configuration, based on DC Nano-grid with three terminal outputs on existing low power AC system is designed by using the proposed converter. The main aim of the work is to design a converter with high power factor and less steady state error. To reduce the errors and faults unidirectional grounding is implemented and the power factor is corrected using phase lock loop.The modeling of the system and the working of the proposed converter are explained and validated with Simulations results.

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Section: Fig 9 Pi Simulationmentioning

confidence: 99%

Implementation of Energy Stored For TC Nano Grid With Power Factor Correction Converter

2019

ijeat

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“…Note that many renewable power sources generate DC energies, while more and more power loads show DC characteristics. Therefore, the DC nano-grids are put forward to be instead of the conventional AC microgrid due to the energy efficiency consideration [1,2], and become more and more attentions [3][4][5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…In order to flexibly utilize the DC power generated by the renewable energy sources, a bi-directional AC/DC converter is generally adopted as the interface between the DC nano-grid and the AC power system. However, in some places, due to a large number of dc loads, the power generated by the local renewable energy sources cannot meet the consumption of local DC loads, so the traditional AC grid needs to provide power to DC nano-grid and the interface works like a power factor correction rectifier [10].…”

Section: Introductionmentioning

confidence: 99%

“…When selecting the power converter between the DC nano-grid and the low-voltage AC grid, the grounding should be first addressed. Three basic types of the grounding configurations for the DC nano-grid have been summarized in [10], including the united grounding, the virtual isolated grounding and the unidirectional grounding.…”

Section: Introductionmentioning

confidence: 99%

“…In [15][16][17][18][19][20], various AC to DC converters were reviewed and compared, but the suitable AC to DC converters based on the united grounding configuration for DC nano-grid application were not introduced. Thus, [10] introduced a dual Buck-Boost AC to DC converter for DC nano-grid based on the principle of Two-Switch Buck-Boost (TSBB) converter, which is a simplified cascade connection of the Buck and Boost converter. This transformerless Buck-Boost AC to DC converter has three-terminal DC outputs and the AC system is common-ground with the DC system.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A New Buck-Boost AC/DC Converter with Two-Terminal Output Voltage for DC Nano-Grid

Wang

et al. 2019

Energies

Self Cite

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Due to the development and deployment of renewable DC power sources and their inherent advantages for DC loads in applications, the DC nano-grid has attracted more and more research attentions; especially the topologies of AC/DC converters are increasingly studied. When designing an AC to DC converter for a DC nano-grid system, the grounding configuration, which determines the costs, the efficiency as well as the safety, plays an important role. A three-terminal output AC to DC converter based on united grounding configuration has been presented for DC nano-grid. However, it has to be pointed out that the three-terminal output DC nano-grid is not as popular as the two-terminal DC output one, due to the infrastructure consideration. This paper proposes a new Buck-Boost AC to DC converter with two-terminal output voltage for DC nano-grid. The operating principle, the steady-state analysis, and the small signal modelling for the proposed converter working in continuous conduction mode are presented in detail. A 220 V/50 Hz/800 W prototype was fabricated to verify the effectiveness of the proposed converter.

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Proportional integral resonance based sliding mode control of VIENNA rectifier for charging station of tramcar under unbalanced power supply

Zhou

Zhang

et al. 2020

Int Trans Electr Energ Syst

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In order to eliminate the ripple of the active power and suppress the negative sequence current produced during the charging process of the tramcar under both balanced and unbalanced power supply conditions, a novel proportional integral resonance based sliding mode (PIRSM) control scheme is proposed in this article for the VIENNA rectifier of the charging station. After deriving the power model in the stationary coordinate system, the mathematical model of the VIENNA rectifier under unbalanced power supply is built. Subsequently, a unified control objective is introduced to make the proposed scheme available for different operating condition without changing the algorithm. Moreover, the resonance control and sliding mode control are combined together to construct the sliding mode surface, and the control law are derived based on the stability requirement to make the system approach its desired operating point with expected trajectory. Experimental results show that compared to the conventional PI control, the proposed control can ensure the better power tracking performances and higher power quality under different power supply conditions.

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A Dual-Buck–Boost AC/DC Converter for DC Nanogrid With Three Terminal Outputs

Cited by 48 publications

References 18 publications

Implementation of Energy Stored For TC Nano Grid With Power Factor Correction Converter

Implementation of Energy Stored For TC Nano Grid With Power Factor Correction Converter

A New Buck-Boost AC/DC Converter with Two-Terminal Output Voltage for DC Nano-Grid

Proportional integral resonance based sliding mode control of VIENNA rectifier for charging station of tramcar under unbalanced power supply

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