摘要
为了提高Buck变换器的本安输出功率,提出了一种具有LC滤波的本安Buck变换器(LC-Buck变换器)。根据基本Buck变换器的输出纹波电压分析方法及二阶低通滤波电路的特性,推导得出了LC-Buck变换器在整个动态范围内的最大输出纹波电压表达式;在给定的输入电压和负载变化范围内,根据电气性能指标要求得出了LC-Buck变换器储能元件电感和电容的设计方法。实验结果验证了理论分析的正确性。
In order to improve the output power of intrinsically safe Buck converter, an intrinsically safe Buck con- verter with LC filter （ A LC - Buck converter） is proposed. According to the output ripple voltage theory of basic Buck converter and the characteristics of second - order low - pass filter, the maximum output voltage ripple is de- duced. The design regions of inductance and capacitance to meet the requirements of electric performance within the input voltage and load ranges are deduced. The capacitance and inductance are compared between the basic Buck converter and LC - Buck converter at the same analysis of the proposed design methods are verified requirement of output voltage ripple. The validity of theoretical by the experimental results.
出处
《榆林学院学报》
2012年第4期9-12,共4页
Journal of Yulin University
基金
榆林学院高层次人才科研启动基金项目(11GK49)
