偽連續(xù)導(dǎo)電模式Buck變換器的動(dòng)態(tài)參考電流控制策略
發(fā)布時(shí)間:2018-10-12 16:27
【摘要】:為了提高工作于偽連續(xù)導(dǎo)電模式(PCCM)的Buck變換器的效率和瞬態(tài)響應(yīng)速度,提出了一種新型動(dòng)態(tài)參考電流(DRC)控制策略。DRC控制方式通過采樣Buck變換器的電感電流信號(hào)和負(fù)載電流信號(hào),并將兩者進(jìn)行加權(quán)平均,獲得電感續(xù)流的動(dòng)態(tài)參考電流信號(hào)。與傳統(tǒng)恒定參考電流控制的PCCM Buck變換器相比,DRC控制的PCCM Buck變換器通過反饋負(fù)載電流提高了電路的輕載工作效率以及輕載時(shí)的輸出電壓紋波。通過引入電感電流信息和負(fù)載電流信息提高了電路的動(dòng)態(tài)性能。仿真與實(shí)驗(yàn)結(jié)果均驗(yàn)證理論分析的正確性。
[Abstract]:In order to improve the efficiency and transient response speed of Buck converter working in pseudo-continuous conductive mode (PCCM), a new dynamic reference current (DRC) control strategy is proposed. The DRC control mode samples the inductance current signal and load current signal of Buck converter. The dynamic reference current signals are obtained by weighted averaging. Compared with the conventional PCCM Buck converter controlled by constant reference current, the PCCM Buck converter controlled by DRC improves the efficiency of the circuit under light load and the ripple of output voltage by feedback load current. The dynamic performance of the circuit is improved by introducing inductance current information and load current information. Both simulation and experimental results verify the correctness of the theoretical analysis.
【作者單位】: 西南交通大學(xué)電氣工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61371033) 霍英東教育基金會(huì)高等院校青年教師基金(142027) 四川省青年科技基金(2014JQ0015,2013JQ0033)資助項(xiàng)目
【分類號(hào)】:TM46
本文編號(hào):2266802
[Abstract]:In order to improve the efficiency and transient response speed of Buck converter working in pseudo-continuous conductive mode (PCCM), a new dynamic reference current (DRC) control strategy is proposed. The DRC control mode samples the inductance current signal and load current signal of Buck converter. The dynamic reference current signals are obtained by weighted averaging. Compared with the conventional PCCM Buck converter controlled by constant reference current, the PCCM Buck converter controlled by DRC improves the efficiency of the circuit under light load and the ripple of output voltage by feedback load current. The dynamic performance of the circuit is improved by introducing inductance current information and load current information. Both simulation and experimental results verify the correctness of the theoretical analysis.
【作者單位】: 西南交通大學(xué)電氣工程學(xué)院;
【基金】:國(guó)家自然科學(xué)基金(61371033) 霍英東教育基金會(huì)高等院校青年教師基金(142027) 四川省青年科技基金(2014JQ0015,2013JQ0033)資助項(xiàng)目
【分類號(hào)】:TM46
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