ZVS Soft Switching Boundaries for Dual Active Bridge DC–DC Converters Using Frequency Domain Analysis

Riedel, J.; Holmes, D.G.; McGrath, Brendan; Teixeira, C. A.

doi:10.1109/tpel.2016.2573856

Cited by 89 publications

(27 citation statements)

References 17 publications

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“…The port ac voltages v 1 , v 2 and v 3 can be described using Fourier series [22]. The infinite sums describing the port voltages are…”

Section: B Fourier Series Modelmentioning

confidence: 99%

“…The times of switching event τ j are defined in Table IV. Note that in the derivation procedure of the closed form solution of the port currents from harmonic form expression, following properties of infinite series of odd components are used [22],…”

Section: Closed Form Solutionmentioning

confidence: 99%

“…Combining (21), (22) and assuming the voltage v x is changing from V x to 0 in (23), following is obtained…”

Section: Closed Form Solutionmentioning

confidence: 99%

“…The implementation becomes even more involved with increasing number of switching patterns when the modulation changes from a single-phase shift to a dual-phase shift or further to a triple-phase shift. Thank to [22], harmonic form expression is a kind of unified interpretation of the transformer current no matter which switching pattern it is in or which modulation is used. It, therefore, makes expression more concise and the implementation in the digital controller much more straightforward.…”

Section: Introductionmentioning

confidence: 99%

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Zero Voltage Switching Criteria of Triple Active Bridge Converter

Purgat

Bandyopadhyay

Qin

et al. 2021

IEEE Trans. Power Electron.

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Triple active bridge (TAB) as an isolated multi-port converter is a promising integrated energy system for smart grids or electric vehicles. This paper aims to derive and analyse zero voltage switching (ZVS) regions of TAB, in which both switching losses are reduced, and EMI issues are mitigated. In the proposed closed-form solution of ZVS criteria, parameters such as the parasitic capacitance of the switches, the leakage inductance of the transformer, the switching frequency, the port voltage, the phase-shift inside and between the full-bridges are all taken into account. The analysis shows how the five degrees of freedom can be used to maintain ZVS operation in various operating points. The analysis and derived closed-form ZVS criteria are experimentally verified using a laboratory prototype. The derived analytical ZVS criteria are a powerful tool to study and optimise the operation of TAB converters.

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“…The port ac voltages v 1 , v 2 and v 3 can be described using Fourier series [22]. The infinite sums describing the port voltages are…”

Section: B Fourier Series Modelmentioning

confidence: 99%

Section: Closed Form Solutionmentioning

confidence: 99%

“…Combining (21), (22) and assuming the voltage v x is changing from V x to 0 in (23), following is obtained…”

Section: Closed Form Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Zero Voltage Switching Criteria of Triple Active Bridge Converter

Purgat

Bandyopadhyay

Qin

et al. 2021

IEEE Trans. Power Electron.

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“…The DAB is a power converter that naturally works with ZVS transitions during the turn-on, allowing a reduction of the power losses. However, at light operation, this ZVS can be lost, causing the increasing of the losses and also the breakdown of the converter [40,41]. Several control techniques have been proposed in the literature in order to overcome this problem [30,[42][43][44][45][46].…”

Section: Dab Design Tipsmentioning

confidence: 99%

On Bidirectional DC Nano-Grids: Design Considerations and an Architecture Proposal

et al. 2019

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The use of DC distribution networks has several advantages, especially for energy saving and integration of energy storage system and renewable energies. In this regard, DC nano-grids are a very interesting solution when distributing electrical power in households. In this paper, an analysis about the possible bidirectional capability of this DC nano-grid is presented. The end-user can freely connect either a passive load (demanding power) or an active one (able to sink current to the grid). The analysis is divided into three different parts. First, a discussion about the most promising power architecture is addressed, taking into consideration the loads in a house. Second, a standard for voltage regulation in a bidirectional DC nano-grid is proposed. Finally, a possible bus provider for this particular bidirectional DC nano-grid is also addressed. This power converter is based on a Dual Active Bridge cascaded with five synchronous buck converters. The key design aspects of the proposed topology are analyzed to emphasize the particular constraints imposed by the standard and the power architecture. A 500 W, 380 V to 24 V bidirectional bus provider has been built in order to experimentally validate the standard proposal and the design aspects.

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A quintuple phase shift modulation scheme in multilevel dual active bridge converter for battery energy storage system

Bheemraj

Karthikeyan

Kumaravel

2022

Circuit Theory & Apps

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Generally, the dual active bridge (DAB) bidirectional DC-DC converter suffers from harmonics in the high-frequency link (HFL) conversion stage while operating under any modulation scheme. This paper proposes a quintuple phase shift (QPS) modulation scheme to suppress the harmonics under the whole operating range. A bidirectional auxiliary switch in the low voltage bridge produces a five-level output, which alleviates harmonic components of HFL current. The total harmonic distortion (THD) analysis is done for various operating conditions and is compared with the conventional modulation scheme, such as single phase shift and dual phase shift. The THD can be reduced in the entire power transmission for the proposed modulation scheme by defining the suitable phase shift ratios. Also, the power flow analysis under QPS modulation is reported in this paper. To validate the proposed approach's theoretical performance, simulation results are obtained under different operating conditions and verified with experimental results. The QPS modulation is implemented using the Spartan 3AN FPGA processor.

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ZVS Soft Switching Boundaries for Dual Active Bridge DC–DC Converters Using Frequency Domain Analysis

Cited by 89 publications

References 17 publications

Zero Voltage Switching Criteria of Triple Active Bridge Converter

Zero Voltage Switching Criteria of Triple Active Bridge Converter

On Bidirectional DC Nano-Grids: Design Considerations and an Architecture Proposal

A quintuple phase shift modulation scheme in multilevel dual active bridge converter for battery energy storage system

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