• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Low Voltage Ride-Through Capability for Matrix Converter fed Adjustable-Speed Induction Machine Drives for Industrial and Wind Applications.
【24h】

Low Voltage Ride-Through Capability for Matrix Converter fed Adjustable-Speed Induction Machine Drives for Industrial and Wind Applications.

机译：适用于工业和风能应用的矩阵转换器供电的可调速感应电机驱动器的低电​​压穿越能力。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The matrix converter (MC) has been a subject of investigation since 1980, and with the rapid decline in semiconductor cost, better packaging concepts and the improvement in switching characteristics, it is now showing potential to replace the conventional dc link inverter rectifier structures. The MC finds its application wherever bidirectional power flow and controlled voltage and current in AC systems is needed and proves to be superior to its competitors when applied in certain specific environments and circumstances. Wind energy conversion systems (WECS) are also a recent growing research topic where use of MC as power electronic converter is being explored and compared to the performance of conventional voltage source based back-to-back converters. This thesis proposes to address one of the limitations of an MC, which is its ride-through capability. The proposed strategy may help to take matrix converters a step ahead in its struggle for commercialization.;Ride-Through capability of an adjustable-speed drive (ASD) refers to the ability to avoid a system shut-down and thus unwanted delays in drive operation, leading to huge production losses, during short term power interruptions. In the context of wind energy systems, it refers to the grid requirement of the generating systems staying connected to the utility for a defined time during grid faults and disturbances. The ride-through behavior of the system with an MC is a challenging task, because of the absence of storage elements. Due to the direct connection between the grid and the generator/motor drives, any disturbance at the utility grid is immediately reflected on the machine behavior.;The thesis comes up with a novel strategy to enhance the ride-through duration and achieve minimum possible flux deviation in the drive operation, during the voltage sag period, allowing minimum transients during power system restoration. With hysteretic control on the magnitude of motor current, the strategy comprises of keeping the motor continuously operating through a combination of input voltage vector application, aligned in the flux direction and zero vector application, along with discontinuation of MC switches. The strategy has been verified through simulation done in Matlab/Simulink.;The ride-through behavior has been analyzed in integration with a wind energy system and various kinds of under voltage faults studied with different sag magnitudes for industrial applications. Ongoing research is aimed at improving the strategy based on experimental verification using laboratory prototype.
机译：自1980年以来，矩阵转换器（MC）一直是研究的对象，随着半导体成本的迅速下降，更好的封装概念以及开关特性的改善，矩阵转换器（MC）现在显示出替代常规直流链路逆变器整流器结构的潜力。 MC适用于需要交流系统中双向功率流和受控电压和电流的场合，并且在某些特定环境和环境下使用时，MC证明优于竞争对手。风能转换系统（WECS）也是一个正在发展的研究主题，正在研究将MC用作电力电子转换器，并将其与基于常规电压源的背靠背转换器的性能进行比较。本文提出解决MC的局限性之一，即穿越能力。所提出的策略可能有助于使矩阵转换器在其商业化斗争中迈出一步。;可调速驱动器（ASD）的穿越能力是指避免系统关闭并因此避免驱动器运行中不必要的延迟的能力，在短期电源中断期间会导致巨大的生产损失。在风能系统中，它是指在电网故障和干扰期间，在规定的时间内保持连接到公用设施的发电系统的电网需求。由于没有存储元件，带有MC的系统的穿越性能是一项具有挑战性的任务。由于电网与发电机/电动机驱动器之间直接连接，因此公用电网上的任何干扰都会立即反映在机器行为上。论文提出了一种新颖的策略来延长穿越时间并尽可能减少通量在电压暂降期间，驱动操作会出现偏差，从而在电力系统恢复期间实现最小的瞬变。通过对电动机电流的大小进行磁滞控制，该策略包括通过组合输入电压矢量应用（沿磁通方向对齐）和零矢量应用以及MC开关的中断来保持电动机连续运行。通过在Matlab / Simulink中进行的仿真验证了该策略。穿越行为已与风能系统集成在一起，并分析了各种下垂幅度不同的欠压故障，用于工业应用。正在进行的研究旨在改进基于实验室原型的实验验证的策略。

著录项

  • 作者

    Prasad, Rashmi.;

  • 作者单位

    University of Minnesota.;

  • 授予单位 University of Minnesota.;
  • 学科 Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 143 p.
  • 总页数 143
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号