微电网单相PWM交/直流变换器的仿真与实验研究

G. Rakesh, N. Pindoriya
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引用次数: 5

摘要

用于微电网应用的单相PWM交/直流变换器已经进行了广泛的测试,主要使用线性负载。当转换器与电网连接时,特别是与印度家庭供电时,需要分析其在线性和静态/动态负载下的行为。本文给出了仿真和实验结果,验证了PWM AC/DC变换器在不同负载场景下的性能——照明负载、电阻性负载和无刷直流电机负载。所有实验均在实时数字仿真试验台上进行,以实时评估变换器的性能。研究的重点是分析直流母线和交流母线在切换瞬间的影响及其对负载突然变化的响应。采用基于场景的方法分别考虑每种载荷,最后将所有载荷放在一起进行试验。转换器参数的选择使其具有良好的效率和成本效益。结合仿真和实验结果,详细说明了变换器参数设计不当对线路电流的影响。通过对印度电源规格的仿真,显示了该变换器的双向潮流能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Simulation and experimental study of single phase PWM AC/DC converter for Microgrid application
Single-phase PWM AC/DC converter used for Microgrid application has been widely tested mostly using linear loads. The behavior of the converter with the linear and static/dynamic loads need to be analyzed when it is connected to the grid, particularly with the Indian house hold power supply. This paper presents simulation and experimental results to verify the behavior of PWM AC/DC converter with different loading scenarios-lighting loads, resistive loads and BLDC motor load. All experiments are performed on real time digital simulator test bed, to evaluate the converter's performance in real time. The main focus of the study is to analyze the effects of DC and AC bus during the instants of switching and their response to the sudden load changes. Experiments are conducted on scenario based approach considering each type of load individually and at the end all the loads together. The converter parameters are chosen in such way that to have good efficiency and cost effective. The effect on line current due to improper design of converter parameters is explained in detail using simulation and experimental results. Also the bidirectional power flow capability of the converter is shown using simulation results for Indian power supply specifications.
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