Experimental Investigation of a Digitally Current Controlled Synchronous Buck DC/DC Converter for Microgrids Applications

Rigogiannis, Nick; Baros, Dimitris; Lempesis, Emmanouil; Ntoga, Stavriani; Peioglou, Eleftheria; Pechlivanis, Christos; Papanikolaou, Nick

doi:10.1109/pacet48583.2019.8956274

Cited by 12 publications

(5 citation statements)

References 10 publications

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“…The utilisation of buck converters has been extended to various DC microgrid applications, e.g. ships [46], wind farms [47], solar farms [48], energy storage systems [49] or LVDC MG applications [50]. However, considering DC microgrids consisting exclusively of buck converters coupled to the energy sources is unrealistic, since the energy produced at the source has a low voltage and a high current and it is usually interfaced to the rest of the network by a boost converter.…”

Section: Buck Convertermentioning

confidence: 99%

Advanced Hierarchical Control and Stability Analysis of DC Microgrids

Braitor

2022

Springer Theses

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source is rigorously proven using ultimate boundedness theory. Asymptotic stability to the desired equilibrium for the closed-loop system is analytically guaranteed, and detailed conditions are derived to guide the control design. v In order to validate the effectiveness of the different control methodologies developed in this thesis, both simulation and experimental testing are performed for each one of the methods, and are also compared with the conventional approaches to highlight their superiority. vi xi 5.4 Simulation results of the system states of two parallel operated DC/DC boost converters under the proposed controller . . . . . . . . . . . . . 5.5 Simulation results of the controller states of two parallel operated DC/DC boost converters under the proposed controller . . . . . . . . 5.6 DC microgrid configuration with n paralleled unidirectional DC/DC boost converters feeding a common generic load.

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Section: Buck Convertermentioning

confidence: 99%

Advanced Hierarchical Control and Stability Analysis of DC Microgrids

Braitor

2022

Springer Theses

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“…The CCM operation is designed for a wide range of operation, by properly selecting the inductance value (L) and the switching frequency (f s ) of the converter. The necessary internal current control loop is based on the Peak Current Control (PCC) method and it is digitally implemented with the aid of a microcontroller unit [22,[24][25][26].…”

Section: Bidirectional Buck-boost Convertermentioning

confidence: 99%

“…Finally, the driver FAN7390 by ON Semiconductor has been selected for the converter driving circuit. This driver is an excellent and cost-effective solution for the current application and it is based on the well-established bootstrap supply technique (its operating principle is described in detail in [26]). For the bootstrap driver diode, we have used the RHRD660S from ON Semiconductor, making the DC/DC converter system a complete ON Semiconductor solution.…”

Section: Bidirectional Buck-boost Convertermentioning

confidence: 99%

Voltage Transients Mitigation in the DC Distribution Network of More/All Electric Aircrafts

Rigogiannis

Voglitsis²,

Jappe³

et al. 2020

Energies

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The objective of this paper is to present a power conversion system, based on a bidirectional DC/DC converter, along with a supercapacitor bank, that mitigates the voltage transients that occur on the DC distribution network of More/All Electric Aircrafts. These transients, such as voltage sags and swells appear on the DC buses of on-board microgrids, mainly due to load variations and are classified according to the aircrafts electric power system standards. First, we shortly describe an aircraft distribution network, that is applicable to the most common actual aircraft architectures, then we present the proposed system, along with the bidirectional DC/DC converter design, the control technique and the supercapacitor bank sizing. Finally, we present simulation and experimental results that support the effectiveness of the proposed system to effectively compensate voltage transients, supporting the DC buses in dynamic conditions. Concluding, the proposed system provides high power quality and compliance with the respective power quality standards for aircraft microgrids.

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“…In this context, the converter output voltage and the batteries SoC are taken into account, in order to provide a current set-point (source or sink) to the lower-level controller. The latter one is based on the peak current control method, which is popular for such applications, owing to the fast-dynamic response and inherent fault protection (current limit) [17], [18]. Finally, as for the CHP system, a micro turbine drives a synchronous generator which is connected to a front-end diode-rectifier, which feeds a separate interlinking DC/DC converter.…”

Section: Description Of the System Under Studymentioning

confidence: 99%

Investigation of Communication Delay Impact on DC Microgrids with Adaptive Droop Control

Baros

Rigogiannis

Papanikolaou

et al. 2020

2020 International Symposium on Industrial Electronics and Applications (INDEL)

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This work aims to investigate the effects of communication delay in a DC microgrid, which operates under an adaptive droop control scheme. A case study of a residential DC microgrid is examined, which is essentially a household prosumer with power generation units, both on site and remotely, energy storage units and various loads. Conventional droop control schemes have been widely adopted in DC microgrids, although they cause voltage deviation, due to the different characteristics of generation units, whereas their performance is sensitive to line impedances. In order to compensate this deviation, while maintaining current sharing accuracy (adapting to line impedances), a distributed secondary controller is considered, which regards only the information of neighboring converters, by the aid of digital communication links. The impact of various communication methods, in terms of communication delay is examined and evaluated via MATLAB/Simulink simulations.

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Experimental Investigation of a Digitally Current Controlled Synchronous Buck DC/DC Converter for Microgrids Applications

Cited by 12 publications

References 10 publications

Advanced Hierarchical Control and Stability Analysis of DC Microgrids

Advanced Hierarchical Control and Stability Analysis of DC Microgrids

Voltage Transients Mitigation in the DC Distribution Network of More/All Electric Aircrafts

Investigation of Communication Delay Impact on DC Microgrids with Adaptive Droop Control

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