Equivalent-resistance based on the analysis of inductor-disconnected discharge behavior for intrinsic safety Buck converters

• Published in: Journal of coal science & engineering, China Vol. 14; no. 3; pp. 485 - 488
• Main Author: 刘树林 刘健 李艳 毛鸿
• Format: Journal Article
• Language: English
• Published: Heidelberg China Coal Society 01.09.2008
• Subjects: Earth and Environmental Science; Earth Sciences; Geochemistry; Geology; Geophysics/Geodesy; Geotechnical Engineering & Applied Earth Sciences; Mechanical Engineering; 开采方法; 煤炭开采; 煤炭设备; 电感器; Buck converter; Intrinsically safe Buck converter; energy equivalence inductor-current
• ISSN: 1006-9097; 1866-6566
• DOI: 10.1007/s12404-008-0104-3

An Equivalent-Resistance based Analysis Method （ERAM） was proposed, which can convert the Inductor-Disconnected Discharge （IDD） behavior of the Intrinsically Safe Buck Converter （ISBC） into that of an Equivalent Simple-Inductive-Circuit （ESIC）. According to the inductor disconnected equivalent circuit corresponding to the most dangerous operating case of the converter, the arc discharge time and the variation of output-voltage during the IDD were deduced based on the simple current linear attenuation model. According to the energy equivalence, the equivalent inductor-current of the ESIC was obtained. It is pointed out that although the inductor-current of the Buck converter is much lower than that of the published ignition curve, ignition still occurs and the ignition ability is strengthened with increase of the output capacitance. The proposed analyzing method is verified by the experiment results on IEC standard spark ignition apparatus.