Power Characterization of Isolated Bidirectional Dual-Active-Bridge DC–DC Converter With Dual-Phase-Shift Control

Zhao, Biao; Song, Qiang; Liu, Wenhua

doi:10.1109/tpel.2012.2189586

Cited by 334 publications

(124 citation statements)

References 11 publications

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“…ESPS control is implemented mainly in low and high voltage level regions for light and medium load conditions, which will be analyzed in the next section. As the maximum transmission power in ESPS control is half of that in ESPS CSPS CSPS control, when the transmission power is beyond the range of ESPS control, the modulation strategy should be switched to CSPS control as shown in Figure 6, since CSPS control is supposed to be the best operation mode for high-power operation [8,10,16,18,25]. …”

Section: The Algorithm To Implement Esps In Light and Medium Load Witmentioning

confidence: 99%

“…Existing energy storage system employs a 50 Hz or 60 Hz transformer for voltage matching and galvanic isolation [2], replacing the line-frequency transformer with a high-frequency isolated bidirectional DC-DC converter (IBDC) would make the energy storage systems more compact and flexible. Due to its soft-switching properties, high power density, high reliability and low number of passive components [10][11][12][13], the IBDC based on the single-phase and H-bridge topology with a high-frequency isolation transformer has become a promising alternative as a power electronic interface in microgrids [1,2], as shown in Figure 2. In [4] the authors proposed a parallel topology for IBDCs in microgrids to provide many advantages such as reduced current ripple, higher reliability, and increased capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, IBDC has extremely low efficiency in working with a wide range of source voltage levels and light load power levels, and it is the primary drawback for the applications in microgrids, as mentioned above [15][16][17]. The authors in [10,15] and [16] proposed and analyzed a dual-phase-shift strategy (DPS) which includes the phase-shift between the primary and secondary sides as well as duty ratio in each side. The DPS has two degrees of freedom to control the transmission power, which can improve the performance of the IBDC with high voltage diversity under light load compared with CSPS control.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

2012

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This paper proposes a novel extended-single-phase shift (ESPS) control strategy of isolated bidirectional full-bridge DC-DC converters (IBDCs) which are a promising alternative as a power electronic interface in microgrids with an additional function of galvanic isolation. Based on the mathematical models of ESPS control under steady-state conditions, detailed theoretical and experimental analyses of IBDC under ESPS control are presented. Compared with conventional single-phase-shift (CSPS) control, ESPS control can greatly improve the efficiency of IBDCs in microgrids through decreasing current stress and backflow power considerably over a wide input and output voltage range under light and medium loads. In addition, ESPS control only needs to adjust one single phase-shift angel to control transmission power, thus it retains implementation simplicity in comparison with dual-phase-shift (DPS) control for microgrid applications. Furthermore, an efficiency-optimized modulation scheme based on ESPS and CSPS control is developed in the whole power range of IBDC for power distribution in microgrids. A 10 kW IBDC prototype is constructed and the experimental results validate the effectiveness of the proposed control strategy, showing that the proposed strategy can enhance the overall efficiency up to 30%.

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Section: The Algorithm To Implement Esps In Light and Medium Load Witmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

2012

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“…Battery applications, such as an energy storage system (ESS) and electric vehicles (EVs) can require a bidirectional power flow to charge or to discharge a battery. Some research has contributed to the operation of the CF-TIBC using two opposite directions; this has involved replacing diodes with active switches [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Current-fed Two Inductor Bi-directional DC/DC Converter using Resonance for a Wide Voltage Range

Noh¹,

Kim²,

Kim³

et al. 2016

Journal of Electrical Engineering and Technology

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-In this paper, a current-fed two-inductor bi-directional DC/DC converter using resonance (CF-TIBCR) and its design method are proposed. The CF-TIBCR has characteristics of low current ripple and a high current rating because of two separated inductors. Also, it achieves zero voltage switching for all switches and zero current switching for switches of a low voltage stage by using the resonant tank. Besides, a voltage spike problem in conventional current-fed converters is solved without the need for an additional snubber or clamping circuits. As a result, the CF-TIBCR features high step-up and high efficiency. Since the proposed converter has difficulty achieving the softswitching condition when the converter requires the low voltage transfer ratio, a method that varies the number of resonant cycles is adopted to extend the output voltage range with satisfying the softswitching condition. The principles of the operation characteristics are presented with a theoretical analysis, and the proposed converter is verified through results of an experiment using a laboratory prototype.

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“…In other cases, two different inverter bridges may be located at the input side and the output side acting as an inverter and a rectifier, respectively. For example, the inter-bridge phase-shift control used in a dual-active bridge (DAB) converter, which is often called single-phase-shift (SPS) control, is simple and easy to implement [10][11][12][13][14][15][16][17][18][19][20][21][22]. Also referred as secondary phase-shift control, the inter-bridge phase-shift was applied for a unidirectional dual-bridge DC/DC converter [23][24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter

et al. 2015

Energies

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Abstract:In this work, a unidirectional full-bridge resonant converter with secondary-side phase-shifted control is addressed. With the variation of voltage gain and power level, this converter may enter into different operational modes, including three continuous current modes and one discontinuous current mode. The details in each operation mode are discussed one by one. The boundary conditions between these modes have been identified. Additionally, the steady-state analysis of all continuous current modes is performed uniformly by using the fundamental harmonics approximation approach. Experimental results based on a lab prototype converter are also included to verify the operation modes predicted by the theoretical analysis.

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Power Characterization of Isolated Bidirectional Dual-Active-Bridge DC–DC Converter With Dual-Phase-Shift Control

Cited by 334 publications

References 11 publications

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

An Efficiency-Optimized Isolated Bidirectional DC-DC Converter with Extended Power Range for Energy Storage Systems in Microgrids

Analysis and Design of a Current-fed Two Inductor Bi-directional DC/DC Converter using Resonance for a Wide Voltage Range

Operation Modes of a Secondary-Side Phase-Shifted Resonant Converter

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