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基于改进ZSVM6策略的准Z源逆变器电感电流纹波分析与抑制

Inductor Current Ripple Analysis and Reduction for Quasi-Z-Source Inverters With an Improved ZSVM6 Strategy

语言:

中文摘要

准Z源逆变器(qZSI)因其高升压比和高可靠性在可再生能源领域得到广泛应用。本文针对三相qZSI的传统空间矢量调制(ZSVM6)方法,提出了一种改进的调制策略,通过优化直通状态的分配,有效降低了电感电流纹波,提升了系统整体性能。

English Abstract

The quasi-Z-source inverter (qZSI) has been widely explored for renewable energy applications due to its superiority, e.g., higher boosting ratio and operational reliability, which is attained by inserting shoot-through (ST) states. As a conventional space vector modulation (SVM) method for the three-phase qZSI, the ZSVM6 method is easy to implement by dividing the ST time into six identical inter...
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SunView 深度解读

准Z源拓扑在光伏逆变器中具有单级升压和逆变的功能,能够简化系统结构并提高转换效率。对于阳光电源的组串式逆变器产品线,该研究提出的改进ZSVM6策略有助于进一步优化升压电路的电感设计,减小电流纹波,从而降低磁性元件的损耗与体积,提升整机功率密度。建议研发团队评估该调制策略在应对宽电压范围输入时的动态响应能力,以提升产品在复杂光照条件下的发电效率与电能质量。