CAJ | 학술논문

三相单开关Boost型PFC电路，由于工作在不连续导电模式，分析起来十分繁琐，设计不得不采用"试凑法"。本文根据电路的工作原理，利用平均法，把原电路简化成一个工作于DCM的DC/DC变换器，使主电路的阶次由三降为一，简化模型可用于主电路参数设计，线性化处理之后，可在频域设计输出电压调节器，因此使该类电路的设计摆脱"试凑法"。对比性的仿真说明，简化模型能够反映原电路的低频大信号特性。样机的实验也说明有关分析正确。
삼상단개관Boost형PFC전로，유우공작재불련속도전모식，분석기래십분번쇄，설계불득불채용"시주법"。본문근거전로적공작원리，이용평균법，파원전로간화성일개공작우DCM적DC/DC변환기，사주전로적계차유삼강위일，간화모형가용우주전로삼수설계，선성화처리지후，가재빈역설계수출전압조절기，인차사해류전로적설계파탈"시주법"。대비성적방진설명，간화모형능구반영원전로적저빈대신호특성。양궤적실험야설명유관분석정학。
The analysis of the single-switch three-phase Power-Factor-Correction (PFC) Boost converter is very complex and trivial, in that the circuit operating in Discontinuous-Conduction-Mode (DCM) and contain seven diodes. The design involves a trial-and-error process in many cases due to the complexity. A simplified model, which is equivalent to a DCM boost dc/dc converter, is proposed based on analysis of the operation of the mains and averaging approach. The proposed model can also be linearized, and obtain the small-signal model. The small-signal model reduces the mains order to one, and greatly simplifies the system design, therefor, the traditional trial-and-error procedure is deserted. The contrast simulation results indicate that the simplified model can represent the low-frequency large-signal dynamic behavior of the single-switch three-phase PFC Boost converters. Experimental results also verify the analysis.