CAJ | 학술논문

本文研究了一种新型无桥Pseudo-Boost功率因数校正( Power Factor Correction,PFC)变换器,变换器完全消除了传统Boost PFC变换器的整流桥,无桥Pseudo-Boost PFC变换器存在谐振支路,但却呈现出PWM变换器的性质；分析了无桥Pseudo-Boost PFC变换器的工作原理,在交流输入电压正半周或是负半周内,具有传统Boost PFC变换器的特性,其电压传输比与谐振支路参数无关。为了验证该新型变换器的有效性,采用了单周控制策略的数字控制实现方案,仿真和实验表明,该变换器直流输出电压稳定,交流输入电流与输入电压相位相同,功率因数可达到1,具有PFC变换器的功能。
본문연구료일충신형무교Pseudo-Boost공솔인수교정( Power Factor Correction,PFC)변환기,변환기완전소제료전통Boost PFC변환기적정류교,무교Pseudo-Boost PFC변환기존재해진지로,단각정현출PWM변환기적성질；분석료무교Pseudo-Boost PFC변환기적공작원리,재교류수입전압정반주혹시부반주내,구유전통Boost PFC변환기적특성,기전압전수비여해진지로삼수무관。위료험증해신형변환기적유효성,채용료단주공제책략적수자공제실현방안,방진화실험표명,해변환기직류수출전압은정,교류수입전류여수입전압상위상동,공솔인수가체도1,구유PFC변환기적공능。
A bridgeless pseudo-boost power factor correction ( PFC) converter is presented in this paper, which completely eliminates the diode rectifier bridge existed in the conventional boost PFC converter. The proposed converter has the characteristics of conventional PWM converter, and its voltage transfer ra-tio is similar to that of conventional boost converter, with no relation to resonant parameters and switching frequency, although it has resonant branch. The principle of Pseudo-Boost PFC converter was analyzed. It shows a traditional Boost PFC converter features whether in the AC input voltage of positive half cycle or in negative half cycle. To verify the validity of the proposed converter, digital control scheme of the control strategy in one cycle control was applied. The simulation and experimental results show that the proposed converter output voltage stability, AC input current and voltage phase is the same, the power factor can reach 1, and with the function of the PFC converter.