A Nonisolated Three-Port DC–DC Converter and Three-Domain Control Method for PV-Battery Power Systems

Zhu, Haijiang; Zhang, Donglai; Zhang, Bowen; Zhou, Zhicheng

doi:10.1109/tie.2015.2393831

Cited by 193 publications

(106 citation statements)

References 35 publications

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“…The transformer turn ratio affects voltage gain M 1 and M 2 as shown in Equations (8) and (9). Furthermore, Equation (14) indicates the voltage gains directly influence the ZVS realization ranges of three ports.…”

Section: Transformer Ratio Optimizationmentioning

confidence: 99%

“…For the non-isolated topology, although the direct connection is beneficial for its reduced number of components and compact architecture, this kind of TP-BDC suffers from limited voltage gain, since the voltage conversion ratio can only be adjusted by controlling the duty-ratio of switches [8][9][10]. In the partly-isolated structures, a transformer is used to isolate one port from the other two ports.…”

Section: Introductionmentioning

confidence: 99%

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A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

Wang

et al. 2017

Energies

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Abstract:In this paper, an isolated multi-resonant three-port bidirectional direct current-direct current (DC-DC) converter is proposed, which is composed of three full bridges, two inductor-capacitorinductor-capacitor (LCLC) multi-resonant tanks and a three-winding transformer. The phase shift control method is employed to manage the power transmission among three ports. Relying on the appropriate parameter selection, both of the fundamental and the third order power can be delivered through the multi-element LCLC resonant tanks, and consequently, it contributes to restrained circulating energy and the desirable promoted efficiency. Besides, by adjusting the driving frequency under different load conditions, zero-voltage-switching (ZVS) characteristics of all the switches of three ports are guaranteed. Therefore, lower switching loss and higher efficiency are achieved in full load range. In order to verify the feasibility of the proposed topology, a 1.5 kW prototype is established, of which the maximum efficiencies under forward and reverse operating conditions are 96.7% and 96.9% respectively. In addition, both of the bidirectional efficiencies maintain higher than 95.5% when the power level is above 0.5 kW.

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Section: Transformer Ratio Optimizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

Wang

et al. 2017

Energies

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“…2 [10]- [13]. For this study the selected PV panel consists of three panels in parallel each having the specifications listed in Table II.…”

Section: Iiorganic Light Emitting Diodesmentioning

confidence: 99%

Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

Ploug¹,

Knott²

2016

ElAEE

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1 Abstract-Photovoltaic (PV) stand-alone systems need to achieve multiple energy conversion modes. I.e. the energy conversion from PV to a local energy storage as well as energy conversion from the energy storage to the load. This paper documents the practical design considerations for the development of a three-port-converter for this purpose optimized for the specifications for driving an Organic Light Emitting Diode (OLED) panel intended for lighting purposes. By using a three-port-converter, featuring shared components for each conversion mode, the converter reaches 97 % efficiency at 1.8 W during conversion from photovoltaic panel to the battery, and 97 % in the area 1.4 W to 2 W for power delivery to the OLED.

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“…In order to solve these problems, three-port bidirectional DC-DC converters (TP-BDCs) were developed, which not only simplify the overall complexity of the system, but improve the power density as well. Therefore, their fruitful advantages make TP-BDCs competitive in a wide range of applications [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. According to the connection mode, TP-BDC topologies can be divided into three types: the nonisolated TP-BDC, the partly isolated TP-BDC and the isolated TP-BDC.…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter

Chen

Wang

et al. 2017

Energies

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Based on the loss distribution and efficiency analysis, a comparative study between a series resonant three-port bidirectional DC-DC converter (SR-TBC) and a multi-resonant three-port bi-directional DC-DC converter (MR-TBC) is reported here. By using the Fourier equivalent analysis method in hand, the resonant current, switching current expressions, zero voltage soft switching (ZVS) conditions of MR-TBC and SR-TBC are deduced. Besides, in consideration of efficiency and soft switching aspects, the loss models of main power components and resonant elements are integrated and optimized for both topologies. Their loss distributions are established, and the different effects derived from the adoption of SiC MOSFET and Si MOSFET on the converter efficiency are discussed. Finally, to verify the theoretical analyses, comparative experiments under diverse load states are conducted based on the prototypes of the MR-TBC and SR-TBC. The obtained results demonstrate that the MR-TBC successfully broadens the ZVS range and thus achieves higher efficiency along the entire load range.

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A Nonisolated Three-Port DC–DC Converter and Three-Domain Control Method for PV-Battery Power Systems

Cited by 193 publications

References 35 publications

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

A High-Efficiency Isolated LCLC Multi-Resonant Three-Port Bidirectional DC-DC Converter

Photovoltaic OLED Driver for Low-Power Stand-Alone Light-to-Light Systems

Comparative Analysis and Optimization of Power Loss Based on the Isolated Series/Multi Resonant Three-Port Bidirectional DC-DC Converter

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