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基于减小直流母线电流谐波调制的共直流母线多驱动系统直流支撑电容设计

Design of Common DC-Link Capacitor in Multiple-Drive System Based on Reduced DC-Link Current Harmonics Modulation

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中文摘要

多驱动系统因其安装成本低、节省空间及高可靠性等优势在工业中得到广泛应用。然而,由于各驱动器间谐波交互产生的直流母线电流纹波,系统通常需要大容量的直流支撑电容。本文提出了一种通过优化调制策略来降低直流母线电流谐波的方法,从而减小电容体积,提升系统功率密度。

English Abstract

Many industrial applications are recently utilizing the advantages of a common dc-bus-based multiple-drive (multidrive) system, such as low installation cost, space savings as well as improved reliability, and flexibility. One of the main drawbacks of such systems is the requirement for a bulky dc capacitor due to the presence of large dc-link current ripples from the harmonic interaction between ...
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SunView 深度解读

该研究通过优化PWM调制策略降低直流母线电流纹波,对阳光电源的组串式逆变器及PowerTitan储能系统具有显著的工程价值。在多机并联或多模块储能系统中,减小直流支撑电容(C-link)的体积不仅能直接降低物料成本,还能有效提升功率密度,并延长电容器的使用寿命,从而提高整机的可靠性。建议研发团队在PowerStack等模块化储能产品的控制算法中引入此类谐波抵消调制策略,以优化电容选型,进一步提升产品在空间受限场景下的竞争力。