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Integration of permanent magnet synchronous generator wind turbines into power grid.

机译：永磁同步发电机风力发电机组并入电网。

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摘要

The world is seeing an ever-increasing demand for electrical energy. The future growth of electrical power generation needs to be a mix of technologies including fossil fuels, hydro, nuclear, wind, and solar. The federal and state energy agencies have taken several proactive steps to increase the share of renewable energy in the total generated electrical power.;In 2005, 11.1% of the total 1060 GW electricity generation capacity was from Renewable Energy Sources (RES) in the US. The power capacity portfolio included 9.2% from hydroelectric, 0.87% from wind, and 0.7% from biomass. Other renewable power capacity included 2.8 GW of geothermal, 0.4 GW of solar thermal, and 0.2 GW of solar PV. Although the share of renewable energy sources is small compared with the total power capacity, they are experiencing a high and steady growth. The US is leading the world in wind energy growth with a 27% increase in 2006 and a projected 26% increase in 2007, according to the American Wind Energy Association (AWEA). The US Department of Energy benchmarked a goal to meet 5% of the nation's energy need by launching the Wind Powering America (WPA) program.;Although renewable energy sources have many benefits, their utilization in the electrical grid does not come without cost. The higher penetration of RES has introduced many technical and non-technical challenges, including power quality, reliability, safety and protection, load management, grid interconnections and control, new regulations, and grid operation economics.;RES such as wind and PV are also intermittent in nature. The energy from these sources is available as long as there is wind or sunlight. However, these are energies that are abundant in the world and the power generated from these sources is pollution free. Due to high price of foundation of wind farms, employing variable speed wind turbines to maximize the extracted energy from blowing wind is more beneficial.;On the other hand, since wind power is intermittent, integrating energy storage systems with wind farms has attracted a lot of attention.;These two subjects are addressed in this dissertation in detail. Permanent Magnet Synchronous Generators (PMSG) are used in variable speed wind turbines. In this thesis, the dynamic of the PMSG is investigated and a power electronic converter is designed to integrate the wind turbine to the grid. The risks of PMSG wind turbines such as low voltage ride through and short circuits, are assessed and the methods of mitigating the risks are discussed.;In the second section of the thesis, various methods of smoothing wind turbine output power are explained and compared. Two novel methods of output power smoothing are analyzed: Rotor inertia and Super capacitors. The advantages and disadvantages of each method are explained and the dynamic model of each method is developed. The performance of the system is evaluated by simulating the wind turbine system in each method.;The concepts of the methods of smoothing wind power can be implemented in other types of wind turbines such as Doubly Fed Induction Generator (DFIG) wind turbines.
机译：世界上对电能的需求不断增长。发电的未来增长需要混合技术，包括化石燃料，水电，核能，风能和太阳能。联邦和州能源机构采取了一些积极措施，以增加可再生能源在总发电量中的比重。2005年，美国1060吉瓦总发电量中有11.1％来自可再生能源（RES）。 。发电能力组合包括水力发电的9.2％，风能的0.87％和生物质的0.7％。其他可再生能源发电能力包括2.8吉瓦的地热，0.4吉瓦的太阳能热和0.2吉瓦的太阳能PV。尽管与总发电量相比，可再生能源的份额很小，但它们正在经历高且稳定的增长。根据美国风能协会（AWEA）的数据，美国在风能增长方面处于世界领先地位，2006年增长了27％，预计2007年将增长26％。美国能源部设定了一个目标，即通过启动“美国风力发电（WPA）”计划来满足美国5％的能源需求。尽管可再生能源有很多好处，但在电网中的利用并非没有成本。 RES的更高普及率带来了许多技术和非技术挑战，包括电能质量，可靠性，安全性和保护性，负载管理，电网互连和控制，新法规以及电网运营经济性.RES也包括风能和光伏发电本质上是断断续续的。只要有风或阳光，这些来源的能量都是可用的。但是，这些能量在世界上非常丰富，并且这些来源产生的能量是无污染的。由于风力发电场的基础价格高昂，采用变速风力涡轮机来最大化吹出的风能更为有利。另一方面，由于风力发电是断断续续的，因此将能量存储系统与风力发电场集成在一起吸引了很多人本文将详细讨论这两个主题。永磁同步发电机（PMSG）用于变速风力涡轮机。本文研究了永磁同步电动机的动态特性，并设计了功率电子转换器将风力涡轮机集成到电网中。评估了低压，低压穿越和短路等PMSG风力发电机的风险，并讨论了缓解风险的方法。在论文的第二部分，对各种平滑风力发电机输出功率的方法进行了解释和比较。分析了两种新颖的输出功率平滑方法：转子惯性和超级电容器。阐述了每种方法的优缺点，并开发了每种方法的动态模型。通过模拟每种方法中的风力涡轮机系统来评估系统的性能。平滑风力的方法概念可以在其他类型的风力涡轮机中实现，例如双馈感应发电机（DFIG）风力涡轮机。

著录项

  • 作者

    Abedini, Asghar.;

  • 作者单位

    The University of Wisconsin - Milwaukee.;

  • 授予单位 The University of Wisconsin - Milwaukee.;
  • 学科 Energy.
  • 学位 Ph.D.
  • 年度 2008
  • 页码 110 p.
  • 总页数 110
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 能源与动力工程;
  • 关键词

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