Transient Current Suppression Scheme for Bi-Directional DC/DC Converters in 42V Automotive Power Systems

Woo-Cheol Lee; Chang-Gyu Yoo; Kyu-Chan Lee; Bo-Hyung Cho

Transient Current Suppression Scheme for Bi-Directional DC/DC Converters in 42V Automotive Power Systems

Vol. 9, No. 4, pp. 517-525, Jul. 2009

10.6113/JPE.2009.9.4.517

Dual voltage system

Bi-directional operation

Buck/Boost converter

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Abstract

42V electrical power systems are on their way to replacing the present l4V systems in automobiles and 42V/14V dual voltage systems have been proposed to provide backward compatibility with the existing components for the 14V systems. A synchronous buck/boost converter is an attractive topology for 42V/14V dual voltage systems since it offers the possibility of bi-directional operation without additional components. In this paper, transient currents generated during converter startup or changes in operation modes between buck and boost are analyzed and a cost effective solution to remove the transient currents is proposed. The validity of the proposed control strategy is investigated through simulation and experiment with bi-directional converters.

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Cite this article

[IEEE Style]

W. Lee, C. Yoo, K. Lee, B. Cho, "Transient Current Suppression Scheme for Bi-Directional DC/DC Converters in 42V Automotive Power Systems," Journal of Power Electronics, vol. 9, no. 4, pp. 517-525, 2009. DOI: 10.6113/JPE.2009.9.4.517.

[ACM Style]

Woo-Cheol Lee, Chang-Gyu Yoo, Kyu-Chan Lee, and Bo-Hyung Cho. 2009. Transient Current Suppression Scheme for Bi-Directional DC/DC Converters in 42V Automotive Power Systems. Journal of Power Electronics, 9, 4, (2009), 517-525. DOI: 10.6113/JPE.2009.9.4.517.