Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling

Thanh-Tuan Nguyen; Van-Tuan Doan; Woojin Choi

Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling

Thanh-Tuan Nguyen

Van-Tuan Doan

Woojin Choi

Vol. 16, No. 2, pp. 695-703, Mar. 2016

10.6113/JPE.2016.16.2.695

EIS

Electrochemical impedance spectroscopy

Fuel cell

Load leveling

Online diagnosis

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Abstract

A fuel cell power conditioning system for online diagnosis and load leveling under the condition of varying load is developed in this study. The proposed system comprises a unidirectional boost converter and a bidirectional buck?boost converter with a battery. The system operates in two different modes. In normal mode, the bidirectional converter is utilized for load leveling; in diagnostic mode, it is utilized to control load voltage while the boost converter generates perturbation current to implement the online diagnosis function through in-situ electrochemical impedance spectroscopy (EIS). The proposed method can perform EIS for a fuel cell under varying-load conditions with no influence on the load. The validity and feasibility of the proposed system are verified by experiments, and the design procedure of the proposed system is detailed.

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Cite this article

[IEEE Style]

T. Nguyen, V. Doan, W. Choi, "Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling," Journal of Power Electronics, vol. 16, no. 2, pp. 695-703, 2016. DOI: 10.6113/JPE.2016.16.2.695.

[ACM Style]

Thanh-Tuan Nguyen, Van-Tuan Doan, and Woojin Choi. 2016. Design of a Fuel Cell Power Conditioning System for Online Diagnosis and Load Leveling. Journal of Power Electronics, 16, 2, (2016), 695-703. DOI: 10.6113/JPE.2016.16.2.695.