Analysis and control of boost inverter for fuel cell applications

2016 IEEE International Conference on Power and Energy (PECon) Pub Date : 2016-11-01 DOI:10.1109/PECON.2016.7951605

H. Das, Chee Wei Tan, A. Yatim, Nik Din bin Muhamad

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引用次数: 4

Abstract

Alternative energy systems (AES) are becoming popular for small scale power generation. Designing the converters which transform the DC power into AC is the main development area of AES. Conventional single-phase voltage source inverter (VSI) uses buck topology which gives lower average output voltage than the input DC voltage. However, where the output voltage requirement is larger than the input DC voltage, such as uninterruptible power supply, fuel cell (FC) and photovoltaic systems, boost inverters are used. The boost inverter applied in this study consists of two boost DC-DC converters, which provides sinusoidal AC voltage output. The key drawback of the inverter lies in its control structure. In this paper, a dual loop control method is applied to ensure pure sinusoidal output voltage with fast dynamic response and low input current ripple. The input voltage of the inverter is assumed to be stable at 48 V considering commercially available FC voltage and the output voltage is regulated at 110 Vrms. In this article, the operating principle, mathematical modelling, analysis and control strategy of the boost inverter is presented. The proposed control strategy is verified with simulation using MATLAB/Simulink®. Simulation results show that the output voltage is 110 Vrms pure sinusoidal and the input current has low ripples.

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用于燃料电池的升压逆变器分析与控制

替代能源系统(AES)在小规模发电中越来越受欢迎。设计将直流电源转换成交流电源的变换器是AES的主要发展方向。传统的单相电压源逆变器(VSI)采用降压拓扑，其平均输出电压低于输入直流电压。然而，在输出电压要求大于输入直流电压的地方，如不间断电源、燃料电池(FC)和光伏系统，则使用升压逆变器。本研究使用的升压逆变器由两个升压DC-DC变换器组成，提供正弦交流电压输出。逆变器的主要缺点在于其控制结构。本文采用双环控制方法，保证输出电压为纯正弦，动态响应快，输入电流纹波小。考虑到市售的FC电压，逆变器的输入电压被假设稳定在48 V，输出电压被调节在110 Vrms。本文介绍了升压逆变器的工作原理、数学建模、分析和控制策略。通过MATLAB/Simulink®仿真验证了所提出的控制策略。仿真结果表明，输出电压为110 Vrms纯正弦，输入电流纹波较小。

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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2016 IEEE International Conference on Power and Energy (PECon)

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