FANG Xupeng, MA Bolong, DONG Zhaolong, GUO Jiuhong, GAO Guanzhong. A quasi-Z-source boost DC-DC converter[J]. Journal of Mine Automation, 2017, 43(4): 68-71. DOI: 10.13272/j.issn.1671-251x.2017.04.016
Citation: FANG Xupeng, MA Bolong, DONG Zhaolong, GUO Jiuhong, GAO Guanzhong. A quasi-Z-source boost DC-DC converter[J]. Journal of Mine Automation, 2017, 43(4): 68-71. DOI: 10.13272/j.issn.1671-251x.2017.04.016

A quasi-Z-source boost DC-DC converter

  • For problems of traditional boost converter including limited boost ability and high capacitor voltage stress, a boost DC-DC converter was proposed which used two quasi-Z-source networks in cascade. Working process of the converter was analyzed, and expressions of step-up ratio and capacitor voltage stress were derived. Compared with traditional Z-source boost converter, the quasi-Z-source converter can realize larger step-up ratio with small duty cycle, and has lower capacitor voltage stress under the same step-up ratio. The simulation and experimental results verify validity of the theoretical analysis.
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