直接并网可再生能源同步发电机阻抗匹配

D. Ockhuis, M. Kamper, Andrew T. Loubser
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引用次数: 2

摘要

将同步发电机直接接入可再生能源微电网的优点是增加了微电网的短路强度。如果这些发电机也能将可再生能源,如风能和水能,转化为电能,那么这是一个进一步的优势。本文研究了直接并网永磁发电机在电网功率和电压变化情况下的阻抗匹配问题。结果表明,当感应反电动势(EMF)电压为1.05 /单位时,最佳匹配电抗为0.5 /单位。此外,还对直流并网永磁同步发电机进行了实验室测试,并对其在不同电网电压和输入功率条件下的性能进行了评估。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Impedance Matching of Direct Grid-Connected Renewable Energy Synchronous Generators
The connection of synchronous generators directly to renewable energy micro-grids has the advantage of increasing the short circuit strength of the micro-grid. If these generators can also be part of converting renewable energy, such as wind and hydro energy, to electrical power, then it is a further advantage. In this paper the impedance matching of such a directly grid-connected permanent magnet generator, with the grid subjected to power and grid voltage variability, is investigated. It is shown that the optimum reactance for best impedance matching is 0.5 per unit at an optimum induced back electromotive force (EMF) voltage of 1.05 per unit. Additionally, laboratory testing of a direct-grid connected permanent magnet synchronous generator is conducted and its performance evaluated for varying grid voltages and input power conditions.
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