基于Crowbar电路的双馈风力发电机DFIG低电压穿越LVRT仿真模型本模型采用CrowbarMatlab Simulin
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基于Crowbar电路的双馈风力发电机DFIG低电压穿越LVRT仿真模型本模型采用CrowbarMatlab Simulink仿真模型（成品）保护电路（串电阻）实现低电压穿越，在电网电压跌落时投入保护电路抑制了转子过电流crowbar电路的电阻阻值以及投入时间均可调节可以自行模拟多组不同程度的跌落深度 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89760643/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89760643/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">基于<span class="_ _0"> </span><span class="ff2">Crowbar<span class="_ _1"> </span></span>电路的双馈风力发电机<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="_ _1"> </span></span>仿真模型</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">概述<span class="ff3">：</span></div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">本文将介绍基于<span class="_ _0"> </span><span class="ff2">Crowbar<span class="_ _1"> </span></span>电路的双馈风力发电机<span class="_ _0"> </span><span class="ff2">DFIG<span class="ff3">（</span>Doubly Fed Induction Generator<span class="ff3">）</span></span></div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="ff3">（</span>Low Voltage Ride Through<span class="ff3">）</span></span>仿真模型<span class="ff4">。</span>本模型采用<span class="_ _0"> </span><span class="ff2">Matlab Simulink</span></div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">仿真工具进行建模<span class="ff3">，</span>并通过串联电阻实现低电压穿越保护<span class="ff3">，</span>以抑制转子过电流<span class="ff4">。</span>通过调节<span class="_ _0"> </span><span class="ff2">Crowbar</span></div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">电路的电阻阻值和投入时间<span class="ff3">，</span>可以自行模拟不同程度的电网电压跌落情况<span class="ff4">。</span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">引言<span class="ff3">：</span></div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">双馈风力发电机<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>作为一种在风力发电领域中广泛应用的发电装置<span class="ff3">，</span>其具有高效能<span class="ff4">、</span>可调速以及</div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">对电网电压波动具有较好的适应性等优点<span class="ff4">。</span>然而<span class="ff3">，</span>在电网电压跌落或故障情况下<span class="ff3">，<span class="ff2">DFIG<span class="_ _1"> </span></span></span>往往会出现</div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">转子过电流的问题<span class="ff3">，</span>这对其安全运行和电网稳定性产生不利影响<span class="ff4">。</span>因此<span class="ff3">，</span>设计有效的低电压穿越保护</div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">策略对<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>的运行非常重要<span class="ff4">。</span></div><div class="t m0 x1 h2 yc ff2 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span>Crowbar<span class="_ _1"> </span><span class="ff1">电路原理</span></div><div class="t m0 x1 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">Crowbar<span class="_ _1"> </span><span class="ff1">电路是一种常用的低电压穿越保护方法<span class="ff3">，</span>在电网电压跌落至一定程度时<span class="ff3">，</span>通过将电机的转子</span></div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">绕组短路<span class="ff3">，</span>将其转子电流降低到安全范围<span class="ff4">。<span class="ff2">Crowbar<span class="_ _1"> </span></span></span>电路包括电阻<span class="ff4">、</span>开关和触发器等组成部分<span class="ff4">。</span>电阻</div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">的阻值和投入时间决定了<span class="_ _0"> </span><span class="ff2">Crowbar<span class="_ _1"> </span></span>电路的工作效果<span class="ff4">。</span></div><div class="t m0 x1 h2 y10 ff2 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span>DFIG<span class="_ _1"> </span><span class="ff1">低电压穿越<span class="_ _0"> </span></span>LVRT<span class="_ _1"> </span><span class="ff1">仿真模型</span></div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">本文采用<span class="_ _0"> </span><span class="ff2">Matlab Simulink<span class="_ _1"> </span></span>仿真工具构建了<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="_ _1"> </span></span>仿真模型<span class="ff4">。</span>模型主要包括</div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">DFIG<span class="_ _1"> </span><span class="ff1">的发电部分<span class="ff4">、</span>电网部分<span class="ff4">、</span>保护电路和控制系统<span class="ff4">。</span>其中保护电路通过串联电阻实现低电压穿越功</span></div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">能<span class="ff3">，</span>通过调节电阻阻值和投入时间可以模拟不同程度的电网电压跌落情况<span class="ff4">。</span></div><div class="t m0 x1 h2 y14 ff2 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">仿真结果分析</span></div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">通过对<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="_ _1"> </span></span>仿真模型的运行进行多组实验<span class="ff3">，</span>观察其在不同电网电压跌落情况下的</div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">响应性能<span class="ff4">。</span>实验结果显示<span class="ff3">，</span>当电网电压跌落至一定程度时<span class="ff3">，</span>保护电路能够及时投入<span class="ff3">，</span>有效抑制转子过</div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">电流<span class="ff3">，</span>保证<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>的安全运行<span class="ff4">。</span></div><div class="t m0 x1 h2 y18 ff2 fs0 fc0 sc0 ls0 ws0">4.<span class="_ _2"> </span><span class="ff1">结论与展望</span></div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">本文基于<span class="_ _0"> </span><span class="ff2">Crowbar<span class="_ _1"> </span></span>电路的双馈风力发电机<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="_ _1"> </span></span>仿真模型<span class="ff3">，</span>通过串联电阻实现了</div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">低电压穿越保护<span class="ff3">，</span>有效抑制了转子过电流<span class="ff4">。</span>仿真结果表明<span class="ff3">，</span>该模型具有较好的低电压穿越性能<span class="ff4">。</span>未来</div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0">可以进一步探索优化保护电路的方式<span class="ff3">，</span>提升<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>在电网电压波动情况下的稳定性和安全性<span class="ff4">。</span></div><div class="t m0 x1 h2 y1c ff1 fs0 fc0 sc0 ls0 ws0">结语<span class="ff3">：</span></div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0">通过本文的介绍<span class="ff3">，</span>读者对基于<span class="_ _0"> </span><span class="ff2">Crowbar<span class="_ _1"> </span></span>电路的双馈风力发电机<span class="_ _0"> </span><span class="ff2">DFIG<span class="_ _1"> </span></span>低电压穿越<span class="_ _0"> </span><span class="ff2">LVRT<span class="_ _1"> </span></span>仿真模型有</div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">了更深入的了解<span class="ff4">。</span>本文通过详细的模型构建和仿真结果分析<span class="ff3">，</span>展示了该模型在低电压穿越保护方面的</div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0">有效性<span class="ff4">。</span>相信这对于风力发电领域的工程师和研究人员具有一定的参考价值<span class="ff4">。</span></div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>