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中文摘要：
针对脉冲序列控制开关DC-DC变换器的非线性控制特性导致输出电压纹波较大,研究脉冲序列控制方法,并对工作于电感电流断续模式的脉冲序列控制Buck变换器进行分析。该方法通过调整两组预先设定的控制脉冲的组合,实现开关变换器输出电压的调整,针对其控制特性研究存在滤波电容等效串联电阻时变换器在不同工作状态下的脉冲序列组合方式,最后基于现有的纹波分析方法分析其实际情况下输出电压纹波特性,为脉冲序列控制的实际应用提供参考。仿真实验结果表明脉冲组合及纹波分析的结论与实际相吻合。
英文摘要：
For the large output voltage ripple caused by the nonlinear characteristics of pulse train（PT） control DC-DC converters,a novel non-linear control method,PT control technique,is investigated. PT controlled Buck converter operating in discontinuous conduction mode （DCM） is studied in this paper. PT control realized the output voltage regulation of switching converter with two preset control pulses,the combination of control pulses in a pulse train repetition cycle considering the existence of the filter capaci-tor equivalent series resistance was analyzed in different working condition. Finally,based on the existing analysis of output voltage ripple,the actual output voltage ripple characteristics of PT control was ana-lyzed to provide theoretical basis for the practical application of PT control. Simulation and experiment re-sults show that the actual pulse combinations and ripple analysis is consistent with the reality.
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