雙環(huán)控制策略的有源功率因數(shù)校正電源研究

摘要：基于電流和電壓的雙環(huán)控制策略，研制了一臺(tái)輸出功率300W的功率因數(shù)校正電源樣機(jī)。功率因數(shù)校正級(jí)和DC/DC變換級(jí)分別采用平均電流控制和峰值電流控制方法。文中詳細(xì)討論了該樣機(jī)的工作原理和設(shè)計(jì)過(guò)程，給出了電流內(nèi)環(huán)和電壓外環(huán)補(bǔ)償網(wǎng)絡(luò)的設(shè)計(jì)過(guò)程。試驗(yàn)結(jié)果表明，所設(shè)計(jì)的樣機(jī)控制電路簡(jiǎn)單，運(yùn)行可靠，性能基本達(dá)到設(shè)計(jì)指標(biāo)。 敘詞：功率因數(shù)校正；雙環(huán)控制；電源 Abstract：A 300W experimental prototype of power supply with power-factor-correction function based on dual-loop control strategy is presented in this paper. The power-factor-correction circuit and the DC/DC converter are realized by average-current control and peak-current control, respectively. In this paper, the principlethe design processthe compensation network of current-loop and voltage loop of the experimental prototype are discussed in detail. Experimental results verify that the control circuit of the power supply is simple, the operation is reliable and it also meets the performance demands. Keyword：power factor correction; dual-loop control; power supply;