A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems

Tomokazu Mishima; Eiji Hiraki; Mutsuo Nakaoka

A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems

Tomokazu Mishima

Eiji Hiraki

Mutsuo Nakaoka

Vol. 10, No. 1, pp. 27-33, Dec. 2009

10.6113/JPE.2010.10.1.27

Bidirectional DC-DC converter

High Frequency (HF)-link

Push-pull circuit

S.C. charging mode

S.C. discharging

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Abstract

This paper presents a bidirectional DC-DC converter suitable for low-voltage super capacitor-based electric energy storage systems. The DC-DC converter presented here consists of a full-bridge circuit and a current-fed push-pull circuit with a high frequency(HF) transformer-link. In order to reduce the device-conduction losses due to the large current of the super capacitor as well as unnecessary ringing, synchronous rectification is employed in the super capacitor-charging mode. A wide range of voltage regulation between the battery and the super capacitor can be realized by employing a Phase-Shifting(PS) Pulse Width Modulation(PWM) scheme in the full-bridge circuit for the super capacitor charging mode as well as the overlapping PWM scheme of the gate signals to the active power devices in the push-pull circuit for the super capacitor discharging mode. Essential performance of the bidirectional DC-DC converter is demonstrated with simulation and experiment results, and the practical effectiveness of the DC-DC converter is discussed.

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Cite this article

[IEEE Style]

T. Mishima, E. Hiraki, M. Nakaoka, "A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems," Journal of Power Electronics, vol. 10, no. 1, pp. 27-33, 2010. DOI: 10.6113/JPE.2010.10.1.27.

[ACM Style]

Tomokazu Mishima, Eiji Hiraki, and Mutsuo Nakaoka. 2010. A High Frequency-Link Bidirectional DC-DC Converter for Super Capacitor-Based Automotive Auxiliary Electric Power Systems. Journal of Power Electronics, 10, 1, (2010), 27-33. DOI: 10.6113/JPE.2010.10.1.27.