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Study on the Influence of Duty Cycle on Ripple Current in Four-phase Interleaving Circuits
Pages: 15-19
Year: Issue:  3
Journal: Vehicle & Power Technology

Keyword:  四相交错Buck/Boost电路纹波电流占空比;
Abstract: 对四相交错Buck和Boost电路占空比对纹波电流幅值的影响进行了理论分析,并得到归一化纹波幅值与占空比的关系.结果表明:在Buck电路中,占空比为0.25、0.5和0.75时归一化电流纹波幅值最小为0,考虑单相纹波电流,占空比选择在0.25和0.75附近时纹波电流最小;在Boost电路中,当输入输出电压的变比较小时,能够有效减小纹波电流.MATLAB仿真结果与理论分析结果一致.
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