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一种具有小直流链路电容的高可靠性单相交流转三相交流变换器

A Highly Reliable Single-Phase AC to Three-Phase AC Converter With a Small Link Capacitor

语言:

中文摘要

本文针对单相交流转三相交流变换器中输入与输出功率不匹配的问题,提出了一种新型拓扑结构。该方案通过优化电路设计,有效减小了直流链路电容的容量需求,同时提升了系统的可靠性,特别适用于住宅类电机驱动等应用场景。

English Abstract

Single-phase ac to three-phase ac converters are needed in numerous applications, including motor drives used for residential applications. These converters, however, suffer from an inherent problem of mismatch between instantaneous input and output powers. Specifically, the instantaneous input power has a dc component along with an alternating component with double-line frequency, while the three...
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SunView 深度解读

该技术对阳光电源的户用光伏逆变器及储能系统具有重要参考价值。在户用场景中,减小直流链路电容(通常为电解电容)不仅能显著提升逆变器的功率密度,还能通过消除易损件提高整机寿命。该拓扑中关于功率解耦和电容减容的控制策略,可应用于阳光电源户用组串式逆变器及小型储能PCS的研发,有助于进一步优化产品体积,提升在住宅市场的竞争力,并为实现更长质保期提供技术支撑。