CAJ | 학술논문

研究了一种具有双极性增益特性的变换器。通过调节占空比可以得到正极性电压增益或负极性电压增益，该变换器可以作为功率因数校正变换器，省去了前端二极管整流桥，从而减小了导通路径损耗，提升了效率。论文分析了该双电感双极性增益变换器工作于电感电流连续模式时的工作模态，分析了正负电压增益情况下的直流稳态特性。分析结果表明该双电感双极性增益变换器能够实现双极性增益，具有输入电流连续等优点。最后，搭建实验平台验证了理论分析的正确性。
연구료일충구유쌍겁성증익특성적변환기。통과조절점공비가이득도정겁성전압증익혹부겁성전압증익，해변환기가이작위공솔인수교정변환기，성거료전단이겁관정류교，종이감소료도통로경손모，제승료효솔。논문분석료해쌍전감쌍겁성증익변환기공작우전감전류련속모식시적공작모태，분석료정부전압증익정황하적직류은태특성。분석결과표명해쌍전감쌍겁성증익변환기능구실현쌍겁성증익，구유수입전류련속등우점。최후，탑건실험평태험증료이론분석적정학성。
Active Power Factor Correction ( APFC) has been widely used in power electronic circuits for it can im?prove the power factor, reduce the harmonic pollution of grid, reduce the conduction loss and save energy. But in diode rectifier bridge of the conventional PFC circuit there exists a relatively large amount of conduction loss, there?fore many bridgeless PFC circuits have been proposed. This paper focused on a novel converter which has the char?acter of both positive and negative voltage gain by adjusting the duty cycle, thus leaving out the diode rectifier bridge as the active power factor correction ( APFC) circuit, reducing the conduction loss, and raising the efficien?cy. The continuous conduction mode (CCM) operation and the steady state characteristics in both positive and neg?ative voltage gain are analyzed in this paper. Analysis shows that the two?inductor bipolar gain converter can a?chieve bipolar voltage gain, and has the characteristic of continuous input current. Experimental platform was built to verify the correctness of the analysis.