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基于改进型PUC5变换器的低直流母线电压有源电力滤波器

Reduced DC-Link Voltage Active Power Filter Using Modified PUC5 Converter

语言:

中文摘要

本文提出了一种基于改进型五电平封装单元(PUC5)变换器的有源电力滤波器(APF)。通过重构两个直流链路,该拓扑降低了对直流母线电压的需求,使其在低于公共耦合点(PCC)交流电压的情况下仍能有效注入谐波电流,提升了变换器的补偿效率与功率密度。

English Abstract

In this letter, the five-level packed U-cell (PUC5) inverter is reconfigured with two identical dc links operating as an active power filter (APF). Generally, the peak voltage of an APF should be greater than the ac voltage at the point-of-common coupling (PCC) to ensure the boost operation of the converter in order to inject harmonic current into the system effectively; therefore, full compensati...
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SunView 深度解读

该研究提出的低直流母线电压多电平拓扑,对阳光电源的组串式逆变器及储能变流器(PCS)具有参考价值。在光伏或储能系统中,降低直流侧电压要求有助于优化功率器件的选型(如降低耐压等级以提升效率),或在相同耐压下提高系统功率密度。对于PowerTitan等大型储能系统,采用此类多电平拓扑可进一步优化谐波性能,降低输出滤波器体积。建议研发团队关注该拓扑在弱电网环境下的控制稳定性,评估其在提升系统并网电能质量方面的应用潜力。