A three-phase soft-switched high-power-density DC/DC converter for high-power applications

Doncker, R.W.A.A. De; Divan, D.M.; Kheraluwala, M.H.

doi:10.1109/28.67533

Cited by 1,956 publications

(285 citation statements)

References 9 publications

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“…Thus the volume of the switching-ripple filters can be significantly reduced in the 3ΦDAB converter. However, similarly to 1ΦDAB converter, the 3ΦDAB converter with phase-shifted modulation still performs poor efficiency at low-power operation [16][17][18][19][20][21]. In [20], a hybrid modulation strategy was proposed for the 3ΦDAB converter, including phase-shifted, triangular and trapezoidal modulations.…”

Section: Review Of Dab Operationmentioning

confidence: 99%

Section: φDab Phase-shift Modulationmentioning

confidence: 99%

“…Thus the power transfer PD can be determined based on integrating both voltage and current. As shown in Equations (1) and (2), PD is dependent on the phase-shift angle δ between two sides of the transformer [18,21]: The parameter d is defined as the voltage gain, equal to (NVbat/Vi), and ω is the switching frequency in radians per second. The theoretical phase-shifted angle δ for a corresponding PD also can be expressed as the following Equations (3) and (4) …”

Section: φDab Phase-shift Modulationmentioning

confidence: 99%

“…Figure 2b shows the typical voltage and current waveforms of trapezoidal modulation. The power conversion PT can be expressed as Equations (6) and (7) [18,21]. Controllable variables include phase-shifted angle δT, the primary-and secondary-side duty cycles D1, D2.…”

Section: φDab Trapezoidal Modulationmentioning

confidence: 99%

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Hybrid Modulation of Bidirectional Three-Phase Dual-Active-Bridge DC Converters for Electric Vehicles

Wang

Lee

2016

Energies

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Bidirectional power converters for electric vehicles (EVs) have received much attention recently, due to either grid-supporting requirements or emergent power supplies. This paper proposes a hybrid modulation of the three-phase dual-active bridge (3ΦDAB) converter for EV charging systems. The designed hybrid modulation allows the converter to switch its modulation between phase-shifted and trapezoidal modes to increase the conversion efficiency, even under light-load conditions. The mode transition is realized in a real-time manner according to the charging or discharging current. The operation principle of the converter is analyzed in different modes and thus design considerations of the modulation are derived. A lab-scaled prototype circuit with a 48V/20Ah LiFePO 4 battery is established to validate the feasibility and effectiveness.

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Section: Review Of Dab Operationmentioning

confidence: 99%

Section: φDab Phase-shift Modulationmentioning

confidence: 99%

Section: φDab Phase-shift Modulationmentioning

confidence: 99%

Section: φDab Trapezoidal Modulationmentioning

confidence: 99%

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Hybrid Modulation of Bidirectional Three-Phase Dual-Active-Bridge DC Converters for Electric Vehicles

Wang

Lee

2016

Energies

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“…3, two different circuit topologies are integrated in the converter. DAB converter [7,8] operates between port A and port B, and its isolated DC power is controlled by adjusting phase angle difference º of two full-bridges. Then, the transformer is excited and the coupling inductor shows low inductances against differential mode current.…”

Section: Circuit Topology and Operation Principlementioning

confidence: 99%

28 W/cm<sup>3</sup> high power density three-port DC/DC converter cell for dual-voltage 12-V/48-V HEV subsystem

Itoh

Inoue

Ishigaki

2017

IEICE Electron. Express

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Realizing both of compact and low energy consumption is technical issue on development of electricity-rich automotive subsystems. In the present work, a 12-V/48-V dual-voltage subsystem using three-port DC/DC converter cells is proposed, and the high power density cell design is studied to achieve ultra-compact subsystem in hybrid-electric-vehicle. A 500 W, 400 kHz prototype is developed with GaN FETs, and its efficiencies are evaluated. The prototype achieves power density of 28 W/cm 3 at rated power, and its efficiency is measured more than 91% over a wide output power range, with a maximum efficiency of 93.7%.

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Quasi‐Z‐source‐based bidirectionalDC‐DCconverters for renewable energy applications

Kafle

Hossain

Kashif

2021

Int Trans Electr Energ Syst

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Summary This article presents a design, analysis, and implementation of a novel impedance‐source‐based bidirectional DC‐DC converter. The proposed converter employs an impedance network to the existing dual‐active‐bridge (DAB) circuit. It inherits all the advantages of the DAB converter along with extra benefits. Compared with the traditional isolated DC‐DC converter, the proposed converter improved the boost ability of the converter. Also, the converter can withstand the shoot‐through phenomenon in an H‐bridge, improving the reliability. The converter can work in the normal buck/boost DAB mode when extra boost is not required. The bidirectional feature is inherent along with soft switching capability. It is therefore well‐suited for the applications, where wide range of voltage gains are required such as renewable energy systems. The topological configuration and control strategy of the proposed topology in both operational modes are discussed. Simulation and experiments have been carried out to demonstrate the effectiveness of the proposed converter topology. The peak efficiency 97% was observed at the rated load of 500 W.

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A three-phase soft-switched high-power-density DC/DC converter for high-power applications

Cited by 1,956 publications

References 9 publications

Hybrid Modulation of Bidirectional Three-Phase Dual-Active-Bridge DC Converters for Electric Vehicles

Hybrid Modulation of Bidirectional Three-Phase Dual-Active-Bridge DC Converters for Electric Vehicles

28 W/cm<sup>3</sup> high power density three-port DC/DC converter cell for dual-voltage 12-V/48-V HEV subsystem

Quasi‐Z‐source‐based bidirectionalDC‐DCconverters for renewable energy applications

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