Analysis of Input Current Ripple and Optimum Filter Capacitor for Fuel-Cell-Based Single-Phase Inverter

Journal of Fuel Cell Science and Technology Pub Date : 2015-12-01 DOI:10.1115/1.4032040

T. Sarkar, S. Mazumder

引用次数: 3

Abstract

Most single-phase inverters, being sourced by fuel cell stacks (FCSs), subject the stacks to reflected low-frequency (120 Hz) current ripples that ride on average dc currents. The ripple current impacts the sizing and efficiency of the FCS. As such and typically, a passive or active filter is required at the input of the inverter (or output of the FCS) to mitigate the ripple current. Toward that end, this paper outlines a guideline to choose the optimum size of a passive input-filter capacitor for a fuel-cell-based power system from the standpoints of the overall system energy density and cost. Detailed case-specific simulation results, based on an analytical approach, are provided to illustrate key issues for both unity power factor as well as harmonic loads.

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燃料电池单相逆变器输入电流纹波分析及最佳滤波电容

大多数单相逆变器由燃料电池组(FCSs)提供，使电池组受到反射低频(120 Hz)电流波纹的影响，这些波纹依靠平均直流电流。纹波电流影响着FCS的尺寸和效率。因此，通常在逆变器的输入端(或FCS的输出端)需要一个无源或有源滤波器来缓解纹波电流。为此，本文从整体系统能量密度和成本的角度出发，概述了燃料电池电力系统无源输入滤波电容器的最佳尺寸选择准则。基于分析方法，给出了详细的具体案例仿真结果，以说明单位功率因数和谐波负载的关键问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Fuel Cell Science and Technology 工程技术-电化学

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： The Journal of Fuel Cell Science and Technology publishes peer-reviewed archival scholarly articles, Research Papers, Technical Briefs, and feature articles on all aspects of the science, engineering, and manufacturing of fuel cells of all types. Specific areas of importance include, but are not limited to: development of constituent materials, joining, bonding, connecting, interface/interphase regions, and seals, cell design, processing and manufacturing, multi-scale modeling, combined and coupled behavior, aging, durability and damage tolerance, reliability, availability, stack design, processing and manufacturing, system design and manufacturing, power electronics, optimization and control, fuel cell applications, and fuels and infrastructure.