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单相变换器中串联堆叠能量解耦缓冲器的设计约束

Design Constraints for Series-Stacked Energy Decoupling Buffers in Single-Phase Converters

语言:

中文摘要

在单相交直流转换中,需通过能量解耦补偿交流侧与直流侧的瞬时功率失配。串联堆叠缓冲器(SSB)是一种主动式能量解耦方案,允许缓冲电容存在大电压纹波以提高能量利用率,同时主动调节直流母线电压。

English Abstract

In single-phase dc-ac and ac-dc conversion, energy decoupling is needed to compensate for the instantaneous power mismatch between the ac side and the dc side. The series-stacked buffer (SSB) is a type of active energy decoupling buffer that allows a large voltage ripple on the energy buffering capacitor to improve the energy utilization ratio while actively regulating the dc-bus voltage with mini...
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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小型储能变流器(PCS)产品线具有重要价值。单相系统在低功率段普遍存在二次谐波功率波动问题,传统方案通常依赖大容量电解电容,限制了功率密度与寿命。SSB技术通过主动解耦,可显著减小电容体积,提升整机功率密度,并延长系统寿命。建议研发团队评估该拓扑在户用储能一体机中的应用,以优化直流母线电压控制,提升系统在弱电网下的稳定性,并进一步降低BOM成本。