A Three-Level Three-Phase Dual Active Bridge DC-DC Converter with a Star-Delta Connected Transformer

Baars, N. H.; Wijnands, C. G. E.; Everts, Jordi

doi:10.1109/vppc.2016.7791601

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…In this context, multi-level 3p-DAB converters have been widely investigated that offer the advantages of symmetrical voltage waveforms containing more voltage levels that helps to reduce reactive current flow as well as to lower device stresses. For example, a T -type three-level 3p-DAB converter was proposed in [11]- [13] that was capable of producing a three-level (+V DC /2, 0, −V DC /2) symmetrical voltage waveform. The ability to control the duration of the zero-voltage state with this topology favors the minimization of reactive power flow and extension of ZVS range as compared to two-level (+V DC /2, −V DC /2) operation of 3p-DAB converter.…”

Section: Nomenclature 3pmentioning

confidence: 99%

“…) of C 2 and consequently determines the magnitude of the fundamental component of v C2t for a given i C2t [29]. By considering the fundamental component of v C2t , an expression for the effective capacitance C 2t can be derived as a function of control angle ψ as given by (11). The derivation of this expression can be found in [30].…”

Section: B Proposed Modulation Scheme For Tunable 3p-dabricmentioning

confidence: 99%

“…Based on (11), C 2t can be varied theoretically in the range 9 where it can be seen that C 2t increases non-linearly with increasing ψ and tends to ∞ as ψ −→ 180 o . To have a reasonable range of C 2t with good controllability, the values of C 2t and ψ should be restricted, for example, C 2 ≤ C 2t ≤ κC 2 and 90 o ≤ ψ ≤ 160 o respectively with κ = 56.75 (cf.…”

Section: Design Considerations For Tunable 3p-dabric Under Dfm Modula...mentioning

confidence: 99%

“…9). It should be noted that the value of κ is dependent on the maximum value of ψ and can be obtained from (11). Furthermore, by substituting (11) into (7), an expression for ω r can be obtained as a function of control angle ψ as given by (12).…”

Section: Design Considerations For Tunable 3p-dabric Under Dfm Modula...mentioning

confidence: 99%

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A Multistructure Multimode Three-Phase Dual-Active-Bridge Converter Targeting Wide-Range High-Efficiency Performance

Khan

Chan

Yaqoob

et al. 2021

IEEE Trans. Power Electron.

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Three-phase dual-active-bridge (3p-DAB) converter is an attractive topology for bidirectional power conversion in high-power applications. However, conduction loss and switching loss are two main loss mechanisms that severely affect its efficiency performance, and adoption of any single modulation scheme or topology cannot minimize these losses over a wide operating range. For this purpose, a reconfigurable topology of 3p-DAB converter is proposed in this paper that utilizes a reconfigurable and tunable resonant network to offer multiple degreesof-freedom (DoF) in minimizing conduction and switching losses over a wide range of operating conditions. The converter is designed such that for 40 % to 100 % of the rated output power, it operates as a tunable 3p-DAB resonant immittance converter with its output power controlled by varying switching frequency and tuning the resonant frequency of a resonant immittance network to track the switching frequency. Below 40 % of the rated output power, the converter transforms to a tunable 3p-DAB series resonant converter with its output power controlled by varying the impedance of a series resonant network while keeping the switching frequency and phase-shift constant. The combination of both operation modes jointly leads to wide-range zero circulating current and soft-switching of all the switches, and hence a wide-range high-efficiency performance as validated by the experimental results.

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Section: Nomenclature 3pmentioning

confidence: 99%

Section: B Proposed Modulation Scheme For Tunable 3p-dabricmentioning

confidence: 99%

Section: Design Considerations For Tunable 3p-dabric Under Dfm Modula...mentioning

confidence: 99%

Section: Design Considerations For Tunable 3p-dabric Under Dfm Modula...mentioning

confidence: 99%

See 2 more Smart Citations

A Multistructure Multimode Three-Phase Dual-Active-Bridge Converter Targeting Wide-Range High-Efficiency Performance

Khan

Chan

Yaqoob

et al. 2021

IEEE Trans. Power Electron.

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“…The soft switching range of the three-level DAB converter was analyzed and expanded in [17]- [19]. Literature [20], [21] investigated the characteristics of the three-level three-phase DAB converter. Nevertheless, none of the bidirectional three-level DC-DC converters mentioned above have an enough wide output voltage range for electric vehicles.…”

Section: Introductionmentioning

confidence: 99%

A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger

et al. 2019

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In order to solve the considerable issues of air pollution, climate warming and fossil energy shortage, many governments around the world have formulated policies to encourage the development of electric vehicles over the past decade. This paper proposes a three-level dual-active-bridge (DAB) converter with blocking capacitors for bidirectional electric vehicle charger. In the proposed three-level DAB converter, two blocking capacitors are placed in series with the two windings of the transformer, respectively. Both of the two three-level bridges can operate in four modes, and generate square waves with four kinds of amplitude. Therefore, the proposed three-level DAB converter can adapt to the wide voltage range of electric vehicle. A working mode selection algorithm is developed to minimize the transformer RMS current of the three-level DAB converter. The optimal working mode can be selected in real time according to the voltage ratio and the active power. Finally, experimental results are presented to verify the feasibility and the advantage of the proposed three-level DAB converter.INDEX TERMS Asymmetric, blocking capacitor, dual-active-bridge, three-level.

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Comparative analysis of three‐phase dual active bridge converter with different transformer topology and modern universal control for DC microgrids

Bachman,

Turzyński,

Jasiński

2024

IET Power Electronics

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The presented work discusses issues related to the use of modern multiphase topologies of Dual Active Bridge (DAB)‐type converters. Converters of this type are widely used in most DC microgrid applications. The introduction emphasizes a comparative analysis between single‐phase and multi‐phase DAB topologies within high‐power DC microgrids, delving into their respective advantages, drawbacks, design procedures, and considerations based on the latest knowledge. The publication explores the comparison and selection of viable topologies for deployment in high‐power and high‐efficiency DC microgrids. The unified method of controlling 1‐phase and multi‐phase DAB converters was proposed in this design, simplifying the issues of DC microgrid control. All topologies were tested on the same controller concept. The study performs laboratory investigation of DAB 1‐phase and 3‐phase: Star–Star, and Star–Delta topologies. Attention was paid to maintaining uniform operating conditions of the system, contrary to studies known from the literature, all tests were carried out on the same laboratory stand and the same magnetic components in different configurations. Analytical and laboratory analyses of the Zero Voltage Switching (ZVS) region were performed, accounting for non‐linear phenomena. Based on these findings, an assessment of the system's performance in soft switching was carried out. The presented results were implemented in a simulation model and subsequently validated through tests on a constructed laboratory setup to ensure the proper operation of the system. This work meticulously presents and discusses variations in efficiency, dynamic response, phase current harmonic distribution, phase shift distribution, ZVS switching region, and more among the examined topologies. To ensure a fair comparison, the converter configuration for both simulation and laboratory models utilized identical components across all configurations.

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A Three-Level Three-Phase Dual Active Bridge DC-DC Converter with a Star-Delta Connected Transformer

Cited by 8 publications

References 8 publications

A Multistructure Multimode Three-Phase Dual-Active-Bridge Converter Targeting Wide-Range High-Efficiency Performance

A Multistructure Multimode Three-Phase Dual-Active-Bridge Converter Targeting Wide-Range High-Efficiency Performance

A Three-Level Dual-Active-Bridge Converter With Blocking Capacitors for Bidirectional Electric Vehicle Charger

Comparative analysis of three‐phase dual active bridge converter with different transformer topology and modern universal control for DC microgrids

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