【摘要】 为进一步提高Vienna拓扑中三相整流器的功率密度,将LCL滤波器引入三相Vienna拓扑整流器前端。基于Vienna拓扑,对LCL滤波器进行建模分析。根据三相四线制的Vienna拓扑整流器和前端L滤波器的占空比前馈控制原理,提出一种基于LCL滤波器的占空比前馈控制,使整流器工作于电流连续模式(CCM)和电流断续模式(DCM)时,对系统做出正确补偿。最后通过实验验证了理论分析的正确性。更多还原

【Abstract】 This paper proposes a LCL filter-based three-phase Vienna topology rectifier in order to improve the power density of Vienna topology three-phase rectifier a step further.Based on the Vienna topology,it gives the detailed modeling of LCL filter.According to the three-phase four-wire Vienna topology rectifier and the principles of frontend L filter duty-ratio-feedforward control,the paper presents a duty-ratio-feedforward control based on LCL filter which provides the proper compensation while the rectifier operates between continued current mode(CCM) and discontinued current mode(DCM).Finally,the experimental results verify the correctness of theoretical and analysis.更多还原