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双逆变器直流母线电流有效值与频谱的解析计算

Analytical Calculation of the RMS Value and the Spectrum of the DC-Link Current of a Dual-Inverter

语言:

中文摘要

本文针对驱动两个独立三相电机的双逆变器系统,研究了其直流母线电流的解析定义。文章基于空间矢量调制(SVPWM)方法,推导了直流母线电流的频率谱及有效值的数学描述,为优化逆变器设计提供了理论依据。

English Abstract

This article is focused on the analytic definition of the dc-link current of a dual-inverter. Therefore, a two-level dual-inverter for driving two independent three-phase electrical motors is considered. Space-vector modulation is taken into account as the modulation method of the inverter. Based on that, an analytic description is derived for the frequency spectrum as well as for the rms value of...
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SunView 深度解读

该研究通过解析法计算直流母线电流的频谱与有效值,对优化逆变器直流侧电容选型、降低纹波电流及提升系统可靠性具有参考价值。对于阳光电源的组串式光伏逆变器及储能变流器(PCS)产品线,虽然该文侧重于双电机驱动场景,但其关于直流母线电流谐波分析的数学建模方法,可迁移至多路MPPT输入或多模块并联的逆变架构中,有助于优化电容寿命管理及电磁兼容(EMC)设计,从而提升产品在复杂工况下的长期运行稳定性。