Analytical calculation of the RMS current stress on the DC link capacitor of voltage DC link PWM converter systems

被引：0

作者：

Kolar, JW ^{[1
]}

Wolbank, TM ^{[1
]}

Schrödl, M ^{[1
]}

机构：

[1] Vienna Tech Univ, Dept Elect Dr & Mach, A-1040 Vienna, Austria

来源：

NINTH INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND DRIVES | 1999年 / 468期

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper a simple analytical expression for the current stress on the DC link capacitor of a voltage DC link converter system, as caused by the load-side inverter is derived. There, a sinusoidal inverter output current and a constant value of the DC link voltage are assumed. The DC link capacitor current rms value is determined by the modulation depth and by the amplitude and the phase angle of the inverter output current. Despite the neglection of the output current ripple the results of the analytical calculation match very well with a digital simulation even if the output current ripple is relatively high as given, e.g., for low-frequency IGBT inverter systems. Thus, the approximation can advantageously be used for designing the DC link capacitor of PWM converter systems.

引用

页码：81 / 89

页数：5

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