A two-stage dc-dc converter for the fuel cell-supercapacitor hybrid system

Zhang, Zhe; Thomsen, Ole C.; Andersen, Michael A. E.

doi:10.1109/ecce.2009.5316065

Cited by 11 publications

(5 citation statements)

References 15 publications

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“…In general, they can be divided into four categories depending on their components: fuel cell-battery hybrid power system [Zhuo et al 2006[Zhuo et al , 2009Lee et al 2008], fuel cell-supercapacitor hybrid power system [Gao 2005;Boulon et al 2007;Ciancetta et al 2009b;Boscaino et al 2008;Payman et al 2009;Zhang et al 2009a], fuel battery-supercapacitor hybrid power system [Shin et al 2012;Li and Joos 2008;Zhang et al 2009c;Pay and Baghzouz 2003], and fuel cell-supercapacitor-battery hybrid power system [Ciancetta et al 2009a;Thounthong et al 2009aThounthong et al , 2009b.…”

Section: Hybrid Power Systemsmentioning

confidence: 99%

On-Chip Hybrid Power Supply System for Wireless Sensor Nodes

Liu

Wang

et al. 2014

J. Emerg. Technol. Comput. Syst.

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With the miniaturization of electronic devices, small-size but high-capacity power supply systems appear to be more and more important. A hybrid power source, which consists of a fuel cell (FC) and a rechargeable battery, has the advantages of long lifetime and good load-following capabilities. In this article, we propose the schematic of a hybrid power supply system that can be integrated on a chip compatible with present CMOS processes. For the on-chip, fuel-cell-based hybrid power system in wireless sensor node design, we propose a two steps optimization: (1) dynamic power management (DPM), and (2) adaptive fuel cell optimal power point tracking (AOPPT). Simulation results demonstrate that the on-chip FC-Bat hybrid power system can be used for wireless sensor nodes under different usage scenarios. Our proposed DPM method can achieve 12.9% more energy savings than the method without DPM. Meanwhile, implementing our AOPPT approach can save about 17% energy compared with the fixed architecture for the fuel cell system. For an on-chip power system with 1cm 2 area consumption, the wafer-level battery can power a typical sensor node for only about five months, while our on-chip hybrid power system will supply the same sensor node for two years steadily.

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Section: Hybrid Power Systemsmentioning

confidence: 99%

On-Chip Hybrid Power Supply System for Wireless Sensor Nodes

Liu

Wang

et al. 2014

J. Emerg. Technol. Comput. Syst.

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“…Thus, the research of DC/DC converter to boost and stabilize the terminal voltage of SC module is very important to make SC energy storage system practicable [8]- [10] . Within a variety of bi-directional DC/DC converter topologies, the dual active bridge (DAB) is referred to be more convenient [11]- [12] .…”

Section: Introductionmentioning

confidence: 99%

Improved performance of a DC/DC converter for supercapacitor energy storage system

Wei

Chen

et al. 2013

2013 IEEE Energy Conversion Congress and Exposition

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This paper concerns the improvements of the isolated symmetry half-bridge bidirectional DC/DC converter when applied in supercapacitor (SC) energy storage system. The guidelines to calculate the ZVS resonance elements were proposed. Meanwhile, a novel model of the converter contains duty ratio as control element was derived. With the model, a phase-shifted plus feed-forward control system was proposed, which could stabilize the primary voltage of the transformer and reduce the leakage inductance current. Simulation and a series of experiments reveal that the proposed technologies improve the performance of the isolated symmetry half-bridge bidirectional DC/DC converter in SC energy storage system.

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“…However, it increases the system cost and power losses. A multiple DC voltage bus, which connects FCs and SCs to different cascade voltage buses through converters, is also a widely used configuration [10], [11], but the disadvantages are the high power losses and the low reliability. Moreover FCs and the SCs cannot keep the bus voltage constant except if they are oversized.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Design of a Bidirectional Isolated DC–DC Converter for Fuel Cells and Supercapacitors Hybrid System

Zhang

Ouyang

Thomsen

et al. 2012

IEEE Trans. Power Electron.

150

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Electrical power system in future uninterruptible power supply (UPS) or electrical vehicle (EV) may employ hybrid energy sources, such as fuel cells and super-capacitors. It will be necessary to efficiently draw the energy from these two sources as well as recharge the energy storage elements by the DC bus. In this paper, a bidirectional isolated DC-DC converter controlled by phase-shift and duty cycle for the fuel cell hybrid energy system is analyzed and designed. The proposed topology minimizes the number of switches and their associated gate driver components by using two high frequency transformers which combine a half-bridge circuit and a full-bridge circuit together on the primary side. The voltage doubler circuit is employed on the secondary side. The current-fed input can limit the input current ripple that is favorable for fuel cells. The parasitic capacitance of the switches is used for zero voltage switching (ZVS). Moreover, a phase-shift and duty cycle modulation method is utilized to control the bidirectional power flow flexibly and it also makes the converter operate under a quasi-optimal condition over a wide input voltage range. This paper describes the operation principle of the proposed converter, the ZVS conditions and the quasi-optimal design in depth. The design guidelines and considerations about the transformers and other key components are given. Finally, a 1-kW 30~50-V-input 400-V-output laboratory prototype operating at 100 kHz switching frequency is built and tested to verify the effectiveness of the presented converter.He has authored or coauthored more than 100 papers. His research areas include switch mode power supplies, piezoelectric transformers, power factor correction, and switch mode audio power amplifiers.

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A two-stage dc-dc converter for the fuel cell-supercapacitor hybrid system

Cited by 11 publications

References 15 publications

On-Chip Hybrid Power Supply System for Wireless Sensor Nodes

On-Chip Hybrid Power Supply System for Wireless Sensor Nodes

Improved performance of a DC/DC converter for supercapacitor energy storage system

Analysis and Design of a Bidirectional Isolated DC–DC Converter for Fuel Cells and Supercapacitors Hybrid System

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