Comparative evaluation of soft-switching, bidirectional, isolated AC/DC converter topologies

Everts, Jordi; Krismer, Florian; Keybus, Jeroen Van den; Driesen, Johan; Kolar, Johann W.

doi:10.1109/apec.2012.6165951

Cited by 37 publications

(12 citation statements)

References 13 publications

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“…Especially, DSPWM enables significant improvements for low-load operation and for widely varying input and/or output voltage ranges such as is the case for the investigated 1-S ac-dc converter, where the DAB input voltage is a rectified sinewave (see Fig. 1), and where d is highly variable [11]. Simple suboptimal solutions for the calculation of the modulation parameters in order to achieve full-operating-range CB ZVS are given in [15] and [16] using SSPWM, and in [9] using DSPWM.…”

Section: ) Current-based (Cb) Zvsmentioning

confidence: 99%

“…The biggest advantage of these DAB topologies is that the ac-dc energy conversions take place in a single conversion stage (1-S), producing high quality waveforms and complying to regulations on low-and high-frequency distortions of the mains ac power lines [8]- [10]. Compared to the traditional dual-stage (2-S) approaches [4], a power factor correcting front-end as well as bulky failure prone electrolytic dc-link capacitors are omitted [11]. The 1-S DAB ac-dc converter topology implemented with a full bridge-full bridge (FBFB) DAB and SR (bidirectional power flow), as shown in Fig.…”

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confidence: 99%

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Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters

Everts

Krismer

Keybus

et al. 2014

IEEE Trans. Power Electron.

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361

124

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Section: ) Current-based (Cb) Zvsmentioning

confidence: 99%

mentioning

confidence: 99%

Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters

Everts

Krismer

Keybus

et al. 2014

IEEE Trans. Power Electron.

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361

124

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“…This paper, on the other hand, presents a comprehensive design procedure and multi-objective optimization with respect to efficiency and power density, in particular for the 1-S, single-phase DAB ac-dc converter topology shown in Figure 1. Thereby it aims to show and prove the performance potential of this promising 1-S architecture, and the competitiveness with 2-S topologies [29], and therefore complements previous publications on DAB converters. The operating conditions and converter specifications for the investigated ac-dc converter are summarized in Table 1 and are based on the requirements for future on-board electric vehicle battery chargers, interfacing the high-voltage battery (400 V) of the vehicle with the single-phase utility grid (230 V rms , 50 Hz).…”

Section: Overview and Objectivesmentioning

confidence: 64%

Design and Optimization of an Efﬁcient (96.1%) and Compact (2 kW/dm3) Bidirectional Isolated Single-Phase Dual Active Bridge AC-DC Converter

Everts

2016

Energies

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Abstract:The growing attention on plug-in electric vehicles, and the associated high-performance demands, have initiated a development trend towards highly efficient and compact on-board battery chargers. These isolated ac-dc converters are most commonly realized using two conversion stages, combining a non-isolated power factor correction (PFC) rectifier with an isolated dc-dc converter. This, however, involves two loss stages and a relatively high component count, limiting the achievable efficiency and power density and resulting in high costs. In this paper, a single-stage converter approach is analyzed to realize a single-phase ac-dc converter, combining all functionalities into one conversion stage and thus enabling a cost-effective efficiency and power density increase. The converter topology consists of a quasi-lossless synchronous rectifier followed by an isolated dual active bridge (DAB) dc-dc converter, putting a small filter capacitor in between. To show the performance potential of this bidirectional, isolated ac-dc converter, a comprehensive design procedure and multi-objective optimization with respect to efficiency and power density is presented, using detailed loss and volume models. The models and procedures are verified by a 3.7 kW hardware demonstrator, interfacing a 400 V dc-bus with the single-phase 230 V, 50 Hz utility grid. Measurement results indicate a state-of-the-art efficiency of 96.1% and power density of 2 kW/dm 3 , confirming the competitiveness of the investigated single-stage DAB ac-dc converter.

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“…Therefore, soft-switching techniques provide the means to reduce conversion losses, through the elimination of switching losses by switching at zero voltage or current. In efforts to improve efficiency, many soft-switching topologies and techniques have been developed in recent years [18,19]. In the quest for viable ways to reduce conversion losses, various bridgeless resonant converters have been proposed to reduce both conduction and switching losses [20][21][22].…”

Section: Resonant Network Topologiesmentioning

confidence: 99%

DC-to-DC Converter Topologies for Wireless Power Transfer in Electric Vehicles

Elkhateb

Adam

Morrow

2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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At present, about nineteen resonant compensation networks capable of operating as pulsating voltage source are utilized for wireless power transfer (WPT), in which all resonant elements participate in resonance. The majority of networks employ full-bridge or half-bridge topologies which suffer from significant stray and leakage inductances that trap the energy and limit the power transfer; hence, reduce the efficiency. Therefore, these topologies utilize additional resonant networks with many elements and switches to exploit all magnetic field-flux density curve quadrants to eliminate switching losses. Such an approach is less desirable as it adds cost and increases complexity. Therefore, this paper proposes four DC-DC converters that utilize resonant compensation networks without additional resonant tanks, targeting Electric Vehicles wireless charging applications. The proposed converters meet the requirements of charging time, cost, range and high efficiency without a dc flux bias as in existing solutions. The technical viability of the proposed dedicated dc-dc converters for wireless power transfer applications has been validated using preliminary simulations.

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Comparative evaluation of soft-switching, bidirectional, isolated AC/DC converter topologies

Cited by 37 publications

References 13 publications

Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters

Optimal ZVS Modulation of Single-Phase Single-Stage Bidirectional DAB AC–DC Converters

Design and Optimization of an Efﬁcient (96.1%) and Compact (2 kW/dm3) Bidirectional Isolated Single-Phase Dual Active Bridge AC-DC Converter

DC-to-DC Converter Topologies for Wireless Power Transfer in Electric Vehicles

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