Some configurations of universal active power filter (UAPF) with uninterruptible power supplies (UPSs) features for single-phase applications are proposed in this study focus on a reduced number of power electronic switches. All proposed configurations, composed by two-leg converters, compensate for current and voltage harmonics and provide power factor control close to one. Comparisons between the structures are made in terms of converters voltage capabilities, shared-leg, and capacitor currents. The model of the systems, including the equations and control system, is detailed described. Steady-state analysis of the proposed configurations demonstrates the existence of a load angle, which reduces the converters current, increasing the efficiency of the proposed systems. A complete set of simulated and experimental results are presented.

中文翻译：

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具有UPS功能的UAPF拓扑适用于中低压应用

本研究提出了针对单相应用的具有不间断电源（UPS）功能的通用有源电源滤波器（UAPF）的某些配置，重点是减少了功率电子开关的数量。所有建议的配置均由两脚转换器组成，可补偿电流和电压谐波，并提供接近于1的功率因数控制。根据转换器的电压功能，共享支路和电容器电流对结构进行比较。详细描述了系统模型，包括方程式和控制系统。对提出的配置进行的稳态分析表明存在负载角，这减小了转换器电流，提高了提出的系统的效率。提出了一套完整的模拟和实验结果。