【摘要】 分析了常规单相Boost有源功率因数校正电路直接并联存在的相间耦合问题,选用一种采用两个Boost主电感和两个二极管的单相Boost有源功率因数校正主电路,这种单相电路直接并联可以改善相间耦合的问题。每个单相电路采用一片平均电流模式控制芯片UC3854B作为控制核心,电路简单,参数设计方便。仿真和实验结果验证了该方法的可行性。更多还原

【Abstract】 The phase interaction among three-phase Active Power Factor Correction(APFC) circuit composed of normal single-phase APFC Boost circuits in parallel is analyzed.A single-phase active power Boost circuit employing two inductors and two diode is adopted,direct parallel connection of this circuit will reduce the phase interaction.A average circuit mode control chip UC3854B is used to control each phase,thus the circuit and parameters are easy to design.The simulative ande experimental results verified its validity.更多还原