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提出了一種基于變速恒頻雙饋電機的風電場電壓控制策略,該策略以風電場出口升壓變壓器高壓側(cè)電壓為控制目標。介紹了該控制策略的總體結(jié)構(gòu),闡述了風電場高壓側(cè)電壓控制的原理,并考慮風電場無功功率極限,研究了無功功率控制、分配和故障情況下緊急電壓控制方案。針對風速擾動和電壓驟降2種情況進行了仿真。仿真結(jié)果表明,所提出的控制方案與功率因數(shù)控制和傳統(tǒng)的電壓控制策略相比可以明顯地提升風電場電壓水平,且無需高壓側(cè)信號、經(jīng)濟有效。
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- 1 - 河南科技大學畢業(yè)設(shè)計論文 單片 機控制直流電機的變速設(shè)計 專業(yè):機電一體化 - 1 - 目錄 第一章 總體設(shè)計方案 ················································ 1 1.1 方案選取 ··························································1 1.1.1 方案一: PWM波調(diào)速 ···············································1 1.1.2 方案二:晶閘管調(diào)速 ··············································2 第二章 單元模塊設(shè)計 ················································ 3 2.1 H 橋電路方案設(shè)計 ·