一种基于储能回路的小型并网风力发电系统

发布时间：2018-01-11 04:18

本文关键词：一种基于储能回路的小型并网风力发电系统　出处：《电工技术学报》2016年S2期 　论文类型：期刊论文

【摘要】：提出了一种小型并网风力发电系统并重点分析了其拓扑结构。通过采用具有高电压增益的单级三相反激式倍压整流电路,以及在直流母线处引入储能支路,系统可以在低风速条件下利用整流器的高电压增益和零电流开通特性,将微弱的风能能量以相对较高的效率存储在储能装置中以提高风能利用率;在风能充足条件下,储能装置辅助系统并网发电,使得捕获的风能直接传输至电网,以保证较高的系统整体效率。进一步,为实现提高电压增益和抑制输入电流畸变的目标,详细分析了整流器的拓扑构成和参数设计方法;同时简要介绍了系统的控制策略,即根据电池荷电状态和风速情况灵活调用相应控制方法的策略。最后,给出了样机在实验室和真实环境下的实验波形和运行数据,实验结果证明了理论分析的可靠性以及系统对小型风场的高度适用性。
[Abstract]:A small scale grid connected wind power system and analyzes its topology. Single-stage three-phase flyback times by using a high voltage gain of the rectifier circuit, and the introduction of storage in the DC bus can branch system can high voltage gain and zero current rectifier used in low wind conditions to open characteristics. The weak wind energy relative to the high efficiency of the storage in the storage device to improve the utilization rate of wind energy; wind energy in sufficient conditions, the energy storage device of auxiliary system in power grid, the captured wind energy transmitted directly to the power grid, to ensure the overall efficiency is high. The system further, to improve the voltage gain and reduce the input current the distortion of the target, a detailed analysis of the topology structure and parameter design method of the rectifier; this paper also briefly introduces the control strategy of the system, according to the state of charge and wind speed Finally, the experimental waveforms and operational data of the prototype in laboratory and real environment are given. The experimental results prove the reliability of the theoretical analysis and the high applicability of the system to small wind farms.

【作者单位】：天津大学智能电网教育部重点实验室;
【基金】：国家高技术研究发展计划(863计划)(2015AA050603) 天津市科技支撑计划重点项目(14ZCZDGX00035)资助
【分类号】：TM614
【正文快照】： 0引言风力发电具有清洁、无污染等优势,是新能源发电的重要一环[1-3]。相较于技术成熟的大中型风能应用[4],小型风力发电既存在较高的研究价值,又面临许多挑战,相关技术仍有待提高:一方面,小型风力发电具有装机容量灵活,运输、维护成本低廉,对电网冲击小等特点[5-7],可以安装

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