Comparison of Conventional DC-DC Converter and a Family of Diode-Assisted DC-DC Converter in Renewable Energy Applications

Yan Zhang; Jinjun Liu; Xiaolong Ma; Junjie Feng

Comparison of Conventional DC-DC Converter and a Family of Diode-Assisted DC-DC Converter in Renewable Energy Applications

Vol. 14, No. 2, pp. 203-216, Mar. 2014

10.6113/JPE.2014.14.2.203

DC-DC converter

Diode-assisted converter

High step-down

High step-up

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Abstract

In the conventional dc-dc converter, a pair of additional diode and the adjacent passive component capacitor/inductor can be added to the circuit with an X-shape connection, which generates a family of new topologies. The novel circuits, also called diode-assisted dc-dc converter, enhance the voltage boost/buck capability and have a great potential for high step-up/step-down power conversions. This paper mainly investigates and compares conventional dc-dc converter and diode-assisted dc-dc converter in wide range power conversion from the aspects of silicon devices, passive components requirements, electro-magnetic interference (EMI) and efficiency. Then, a comprehensive comparison example of a high step-up power conversion system was carried out. The two kinds of boost dc-dc converters operate under the same operation conditions. Mathematical analysis and experiment results verify that diode-assisted dc-dc converters are very promising for simultaneous high efficiency and high step-up/step-down power conversion in distributed power supply systems.

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Cite this article

[IEEE Style]

Y. Zhang, J. Liu, X. Ma, J. Feng, "Comparison of Conventional DC-DC Converter and a Family of Diode-Assisted DC-DC Converter in Renewable Energy Applications," Journal of Power Electronics, vol. 14, no. 2, pp. 203-216, 2014. DOI: 10.6113/JPE.2014.14.2.203.

[ACM Style]

Yan Zhang, Jinjun Liu, Xiaolong Ma, and Junjie Feng. 2014. Comparison of Conventional DC-DC Converter and a Family of Diode-Assisted DC-DC Converter in Renewable Energy Applications. Journal of Power Electronics, 14, 2, (2014), 203-216. DOI: 10.6113/JPE.2014.14.2.203.