榆林学院学报
榆林學院學報
유림학원학보
JOURNAL OF YULIN COLLEGE
2012年
4期
9-12
,共4页
Buck变换器%输出纹波电压%低通滤波器
Buck變換器%輸齣紋波電壓%低通濾波器
Buck변환기%수출문파전압%저통려파기
buck converters%output voltage ripple%low pass filter
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。
為瞭提高Buck變換器的本安輸齣功率,提齣瞭一種具有LC濾波的本安Buck變換器（LC-Buck變換器）。根據基本Buck變換器的輸齣紋波電壓分析方法及二階低通濾波電路的特性,推導得齣瞭LC-Buck變換器在整箇動態範圍內的最大輸齣紋波電壓錶達式;在給定的輸入電壓和負載變化範圍內,根據電氣性能指標要求得齣瞭LC-Buck變換器儲能元件電感和電容的設計方法。實驗結果驗證瞭理論分析的正確性。
위료제고Buck변환기적본안수출공솔,제출료일충구유LC려파적본안Buck변환기（LC-Buck변환기）。근거기본Buck변환기적수출문파전압분석방법급이계저통려파전로적특성,추도득출료LC-Buck변환기재정개동태범위내적최대수출문파전압표체식;재급정적수입전압화부재변화범위내,근거전기성능지표요구득출료LC-Buck변환기저능원건전감화전용적설계방법。실험결과험증료이론분석적정학성。
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.
