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扇区更新延迟分析及其对宽交流输入频率下三相六开关Buck PFC变换器数字控制的影响

Analysis of Sector Update Delay and Its Effect on Digital Control Three-Phase Six-Switch Buck PFC Converters With Wide AC Input Frequency

语言:

中文摘要

本文分析了三相六开关Buck PFC变换器的扇区更新延迟(SUD)。SUD会导致变换器在偶数扇区向奇数扇区转换时,开关损耗增加且输入电流畸变。针对47-63Hz宽交流输入频率应用,本文探讨了SUD的具体影响及抑制策略。

English Abstract

In this article, the sector update delay (SUD) of the digital control three-phase six-switch (3 ph-6 s) buck power factor correction (PFC) converter is analyzed. SUD of 3 ph-6 s buck PFC converter results in the increase of switching loss and input current distortion at the transition from even sector to odd sector. For applications when ac input frequency is 47-63 Hz, the effect of SUD is relativ...
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SunView 深度解读

该研究针对三相六开关Buck PFC拓扑的控制优化,对阳光电源的组串式逆变器及工商业储能PCS产品线具有重要参考价值。在宽频率输入场景下,优化扇区更新逻辑能有效降低开关损耗并提升电能质量(THD)。建议研发团队在iSolarCloud智能运维平台及逆变器控制算法中引入该延迟补偿机制,以提升产品在弱电网或不稳定电网环境下的并网性能,增强系统运行的可靠性与效率。