A quasi-Z-source boost DC-DC converter
FANG Xupeng
MA Bolong
DONG Zhaolong
GUO Jiuhong
GAO Guanzhong
Abstract：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.
Keywords：DC-DC converterboost converterquasi-Z-sourcecascadestep-up ratiocapacitor voltage stress
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 68-71 )