Optimized Modulation and Dynamic Control of a Three-Phase Dual Active Bridge Converter With Variable Duty Cycles

Huang, Jun; Li, Zhuoqiang; Shi, Linjun; Wang, Yue; Zhu, Jun

doi:10.1109/tpel.2018.2842021

Cited by 56 publications

(22 citation statements)

References 27 publications

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“…There have already been many studies about the operational principles of DAB converters including single-phase DAB (1p-DAB) [12] and three-phase DAB (3p-DAB) [13] converters under different phase-shift control methods. There are also some studies about the operation of single phase SAB (1p-SAB) converters [14], [15].…”

Section: Medium Frequency Transformermentioning

confidence: 99%

“…I SOLATED DC/DC converters are widely applied in many energy conversion applications, thanks to the galvanic isolation, high step-up ratios, compact design and high efficiency [1]- [6]. Two converter types: Dual Active Bridge (DAB) converters [7]- [13] and Single Active Bridge (SAB) converters [7], [14]- [19] are the most popular converter choices among all isolated DC/DC converters. An isolated DC/DC converter normally combines two converter bridges and an intermediate transformer, and it can be designed single-phase [7]- [10], [14]- [16] or three-phase [11]- [13], [17]- [19].…”

Section: Introductionmentioning

confidence: 99%

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Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Sang

Junyent-Ferré

Green

2020

IEEE Trans. Power Electron.

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Single Active Bridge (SAB) DC/DC converters are attractive options for unidirectional DC/DC conversion in future medium power generation applications, offering galvanic isolation and a diode-based output side. SAB DC/DC converters must be controlled by adjusting the active bridge switching duty cycle, unlike Dual Active Bridge (DAB) converters where the phase-shift angle control is normally used. This paper presents a comprehensive analysis of the operational principles of threephase SAB (3p-SAB) DC/DC converters that arise from different duty cycle operation ranges. Moreover, the converter performances such as transformer harmonic currents are analyzed and are compared between different input and output DC voltage conditions. Finally, an experimental validation using a small scale prototype is presented. Index Terms-Three-phase single active bridge DC/DC converter, operational modes, duty cycle control, performances.

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Section: Medium Frequency Transformermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Sang

Junyent-Ferré

Green

2020

IEEE Trans. Power Electron.

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“…Therefore, the suitable candidates for the LVDC converter should treat several hundred DC voltage levels in a smooth bi-directional control manner. and high-power density because of its interleaved structure [9][10][11][12]. The interleaved structure makes the effective switching frequency increase, which can decrease the size of passive components and reduce the peak and root mean square (RMS) current.…”

Section: Introductionmentioning

confidence: 99%

“…The 3P-DAB converter is generally considered in bi-directional applications since it has the advantages of the SP-DAB converter such as soft switching capability without additional resonant components and smooth bidirectional power transition under seamless control [8]. In addition, the 3P-DAB converter shows low conduction loss and high-power density because of its interleaved structure [9][10][11][12]. The interleaved structure makes the effective switching frequency increase, which can decrease the size of passive components and reduce the peak and root mean square (RMS) current.…”

Section: Introductionmentioning

confidence: 99%

Practical Controller Design of Three-Phase Dual Active Bridge Converter for Low Voltage DC Distribution System

Choi¹,

Lee²,

Jung

2020

Electronics

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In a low voltage DC (LVDC) distribution system, isolated bi-directional DC-DC converters are key devices to control power flows. A three-phase dual-active-bridge (3P-DAB) converter is one of the suitable candidates due to inherent soft-switching capability, low conduction loss, and high-power density. However, the 3P-DAB converter requires a well-designed controller due to the influence of the equivalent series resistance (ESR) of an output filter capacitor, degrading the performance of the 3P-DAB converter in terms of high-frequency noise. Unfortunately, there is little research that considers the practical design methodology of the 3P-DAB converter’s controller because of its complexity. In this paper, the influence of the ESR on the 3P-DAB converter is presented. Additionally, the generalized average small-signal model (SSM) of the 3P-DAB converter including the ESR of the capacitive output filter is presented. Based on this model, an extended small-signal model and appropriate controller design guide, and performance comparison are presented based on the frequency domain analysis. Finally, experimental results verify the validity of the proposed controller using a 25 kW prototype 3P-DAB converter.

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“…With phase-shift modulation or single phase-shift (SPS) control, the DAB converter is able to manipulate bidirectional power by varying the phase shift ϕ between the two high-frequency (HF) square-wave ac link voltages generated by the two active H bridges. On the one hand, more efforts have been put on the new gating schemes and control strategies to extend the soft-switching range and minimise switch stresses [7][8][9][10][11][12][13]. On the other hand, the original topology is also modified to meet the requirements of different applications [14,15].…”

Section: Introductionmentioning

confidence: 99%

Comprehensive study of fast load modulation with volt‐second balance in a dual‐active‐bridge converter

Tang

Zhou

et al. 2019

IET Power Electronics

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The procedure of load transition in a dual-active-bridge converter is expected to be fast and spike free. To achieve such a goal, the total required adjustment of phase-shift angles should be assigned to different switch arms properly. This study discusses all possible combinations of two switch arms and their related phase-shifts, which could result in several different solutions. By forcing a zero algebraic variation of the volt-second product, all solutions can keep the volt-second balance of the power inductor so that no risk of magnetic saturation in the transient state exists. The possibility of temporal overshoot current can be checked by verifying the monotonicity of the intermediate volt-second product. A comparison of all solutions is made to give a suggestion for their feasibility. Experimental tests are included at last which validated the theoretical analysis.

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Optimized Modulation and Dynamic Control of a Three-Phase Dual Active Bridge Converter With Variable Duty Cycles

Cited by 56 publications

References 27 publications

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Operational Principles of Three-Phase Single Active Bridge DC/DC Converters Under Duty Cycle Control

Practical Controller Design of Three-Phase Dual Active Bridge Converter for Low Voltage DC Distribution System

Comprehensive study of fast load modulation with volt‐second balance in a dual‐active‐bridge converter

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