【摘要】 工作在连续导通模式的Bridgeless-Boost和Halfbridge-Boost拓扑,省略了传统Boost-PFC前端的整流桥,减少了通态损耗,提高了电路的效率约1%。分析Bridgeless-Boost拓扑共模EMI干扰的产生机理,对Halfbridge-Boost拓扑提出了一种新的控制方式,并作了仿真和试验的验证。更多还原

【Abstract】 By omitting diode bridge rectifier,the Bridgeless-Boost and Halfbridge-Boost topologies in the continuous conduction mode(CCM) can reduce on-state loss,and enhance the circuit efficiency around 1% than the conventional Boost-PFC.The mechanism of common mode noise EMI in Bridgeless-Boost Topology is analyzed.A new control strategy for Halfbridge-Boost Topology is proposed,and is validated by simulation and test.更多还原