基于Simulink的LCL滤波回路波特图绘制
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内容概要：该文档详细介绍了使用Simulink软件对LC滤波回路进行建模并绘制波特图的方法。通过逐步讲解，在Simulink环境里创建电路模型，并详细解释了每一个组件的功能及设置步骤，包括元件的选择、参数的调整以及测试点和线性化分析工具的具体使用方法适合人群：电子工程领域的研究人员和技术工程师，尤其专注于功率电子技术和电力系统的从业者和研究者。使用场景及目标：主要用于学术科研机构做课题研究或者工业企业在新产品开发阶段对于新型电控设备的设计验证环节。可以帮助工程师更好地理解和预测特定拓扑结构下的电气特性表现，为后续优化提供理论依据。其他说明：整个过程中运用了大量的图形辅助理解各个部件之间的连接关系和仿真结果展示方式，使得教程更加直观易懂；同时，所有操作均是在最新的MATLAB版本及其配套插件环境下完成，确保内容与时俱进且具备较强的实际指导意义。 <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/90214064/2/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/90214064/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">Simulink<span class="ff2 sc1">绘制</span>LCL<span class="ff2 sc1">滤波<span class="_ _0"></span>回路的波<span class="_ _0"></span>特图</span></div><div class="t m0 x2 h3 y2 ff3 fs1 fc0 sc0 ls0 ws0">0 <span class="_ _1"> </span><span class="ff4">前言<span class="_ _2"> </span></span>....................................................<span class="_ _0"></span>....................................................<span class="_ _0"></span>...........................1</div><div class="t m0 x2 h3 y3 ff3 fs1 fc0 sc0 ls0 ws0">1 <span class="_ _1"> </span><span class="ff4">打开<span class="_ _3"> </span></span>Simulink<span class="_"> </span>.......................................................................................<span class="_ _0"></span>.............................1</div><div class="t m0 x2 h3 y4 ff3 fs1 fc0 sc0 ls0 ws0">2 <span class="_ _1"> </span><span class="ff4">绘制仿真图<span class="_ _4"> </span></span>...................................................<span class="_ _0"></span>....................................................<span class="_ _0"></span>................2</div><div class="t m0 x2 h3 y5 ff3 fs1 fc0 sc0 ls0 ws0">3 <span class="_ _1"> </span><span class="ff4">线性分析<span class="_ _2"> </span></span>........<span class="_ _0"></span>......................................................<span class="_ _0"></span>....................................................<span class="_ _0"></span>.........5</div><div class="t m0 x2 h3 y6 ff3 fs1 fc0 sc0 ls0 ws0">4 <span class="_ _1"> </span><span class="ff4">结论<span class="_ _2"> </span></span>....................................................<span class="_ _0"></span>....................................................<span class="_ _0"></span>...........................7</div><div class="t m0 x3 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">0 <span class="_ _5"> </span><span class="ff2 sc1">前言</span></div><div class="t m0 x4 h3 y8 ff4 fs1 fc0 sc0 ls0 ws0">一般来说，采用电力电子技术的三相<span class="ff5">PWM</span>整流装置都是采用<span class="ff5">LCL</span>滤波回路与电网实现</div><div class="t m0 x3 h3 y9 ff4 fs1 fc0 sc0 ls0 ws0">互联，以期滤除整流装置产生的高频谐波。</div><div class="t m0 x4 h3 ya ff4 fs1 fc0 sc0 ls0 ws0">此类<span class="ff5">LCL</span>滤波回路比较简单，一般可利用解析法<span class="ff5">+Matlab</span>对其频谱特性进行分析；而</div><div class="t m0 x3 h3 yb ff4 fs1 fc0 sc0 ls0 ws0">对于较为复杂的<span class="ff5">LCL</span>滤波回路，如下图</div><div class="t m0 x5 h3 yc ff4 fs1 fc0 sc0 ls0 ws0">则需要利用<span class="ff5">Matlab</span>内的<span class="ff5">Simulink</span>工具包实现了。本文以常规<span class="ff5">LCL</span>滤波回路为例子，</div><div class="t m0 x3 h3 yd ff4 fs1 fc0 sc0 ls0 ws0">利用<span class="ff5">Simulink</span>进行波特图的绘制。</div><div class="t m0 x3 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">1 <span class="_ _5"> </span><span class="ff2 sc1">打开</span> <span class="_ _5"> </span>Simulink</div><div class="t m0 x5 h3 yf ff4 fs1 fc0 sc0 ls0 ws0">在<span class="ff5">Matlab</span>的命令行下，输入<span class="ff5">simulink</span>，打开<span class="ff5">Simulink</span>工具包，并按下图所示依</div><div class="t m0 x3 h3 y10 ff4 fs1 fc0 sc0 ls0 ws0">次：</div><div class="t m0 x5 h3 y11 ff6 fs1 fc0 sc0 ls0 ws0"><span class="_ _6"> </span><span class="ff4">打开<span class="ff5"> Simulink Library Browse</span></span></div><div class="t m0 x5 h3 y12 ff6 fs1 fc0 sc0 ls0 ws0"><span class="_ _6"> </span><span class="ff4">在<span class="ff5">Simulink Library Browse</span>的浏览区选择路径：</span></div><div class="t m0 x6 h3 y13 ff5 fs1 fc0 sc0 ls0 ws0">Simscape – Power Systems – Specialized Technology – </div><div class="t m0 x7 h3 y14 ff5 fs1 fc0 sc0 ls0 ws0">Fundamental Blocks - Elements</div><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a><a class="l"><div class="d m1"></div></a></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90214064/bg2.jpg"><div class="t m0 x3 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">2 <span class="_ _5"> </span><span class="ff2 sc1">绘制仿真<span class="_ _0"></span>图</span></div><div class="t m0 x4 h3 y16 ff6 fs1 fc0 sc0 ls0 ws0"><span class="_ _6"> </span><span class="ff4">第一步：<span class="ff5"> </span>在<span class="ff5">Simulink Library Browser</span>的元件区选择<span class="ff5">Series RLC Branch</span>元</span></div><div class="t m0 x8 h3 y17 ff4 fs1 fc0 sc0 ls0 ws0">件，绘制成下图。注意将其中两个分别配置成<span class="ff5">L</span>（其值可根据需要而定，暂定</div><div class="t m0 x8 h3 y18 ff4 fs1 fc0 sc0 ls0 ws0">为<span class="ff5">200uH</span>、<span class="ff5">18uH</span>）<span class="ff5">,</span>另一个配置成<span class="ff5">RC</span>（其值可根据需要而定，暂定为<span class="ff5">0.1</span>Ω</div><div class="t m0 x8 h3 y19 ff5 fs1 fc0 sc0 ls0 ws0">+10uF<span class="ff4">）</span></div><div class="t m0 x4 h3 y1a ff6 fs1 fc0 sc0 ls0 ws0"><span class="_ _6"> </span><span class="ff4">第二步：在前端增加一个可控电压源（<span class="ff5">Controlled Voltage Source</span>）<span class="_ _7"></span>，后端增</span></div><div class="t m0 x8 h3 y1b ff4 fs1 fc0 sc0 ls0 ws0">加一个电流测量仪表（<span class="ff5">Current Measurement</span>）</div><div class="t m0 x7 h3 y1c ff4 fs1 fc0 sc0 ls0 ws0">可控电压源、电流测量仪表在浏览区的路径分别如下：</div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90214064/bg3.jpg"><div class="t m0 x4 h3 y1d ff4 fs1 fc0 sc0 ls0 ws0">绘成仿真图如下：</div><div class="t m0 x4 h3 y1e ff6 fs1 fc0 sc0 ls0 ws0"><span class="_ _6"> </span><span class="ff4">第三步：在可控电压源的输入、电流测量仪表的输出分别设置输入端点</span></div><div class="t m0 x8 h3 y1f ff5 fs1 fc0 sc0 ls0 ws0">(In1)<span class="ff4">、输出端点</span>(Out1)</div><div class="t m0 x7 h3 y20 ff4 fs1 fc0 sc0 ls0 ws0">输入端点、输出端点在浏览区的路径分别如下：</div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div>