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Integrating renewable energy resources with energy storage for grid-connected systems.

机译：将可再生能源与并网系统的储能整合在一起。

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摘要

Renewable energy resources have been growing at a rapidly accelerating rate as an alternative for fossil fuels in the modern electric grid. As their penetration increases, variability in these resources, particularly wind and solar, poses a risk of instability on the grid. Energy storage can be used to mitigate this risk as well as provide other benefits to the larger grid. In this dissertation, a novel high frequency common bus multiport converter is proposed as a new integration scheme to improve efficiency of the power electronics interface by reducing the number of conversion steps and to reduce the system size by replacing the line frequency transformer with a high frequency transformer tied to the common bus. Two main innovations are introduced: a new switching scheme for the H-bridges on the common bus which allows them to operate in parallel without interfering in each others operation, and a novel single-phase to three-phase matrix converter which converts the high frequency bus to the line frequency in a single conversion stage. This proposed converter is simulated to develop the inner loop control methodology, then a low power prototype is constructed and tested to verify its operation. The results of these tests demonstrate the feasibility of the proposed ideas as well as suggesting new avenues of research to further improve the proposed system.
机译：作为现代电网中化石燃料的替代品，可再生能源已经以迅猛的速度增长。随着其渗透率的提高，这些资源（尤其是风能和太阳能）的可变性会带来电网不稳定的风险。储能可以用来减轻这种风险以及为更大的电网提供其他好处。本文提出了一种新型的高频公共母线多端口转换器，作为一种新的集成方案，通过减少转换步骤的数量来提高电力电子接口的效率，并通过用高频替换线路频率互感器来减小系统尺寸。变压器绑在公共母线上。引入了两个主要的创新：一种用于公共总线上H桥的新开关方案，该方案允许它们在不互相干扰的情况下并行运行；以及一种新颖的单相至三相矩阵转换器，可转换高频总线在单个转换阶段连接到线路频率。仿真该拟议的转换器以开发内环控制方法，然后构建并测试低功耗原型以验证其运行。这些测试的结果证明了提出的想法的可行性，并为进一步改善提议的系统提供了新的研究途径。

著录项

  • 作者

    Carr, Joseph.;

  • 作者单位

    University of Arkansas.;

  • 授予单位 University of Arkansas.;
  • 学科 Engineering Electronics and Electrical.;Energy.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 217 p.
  • 总页数 217
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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