Matlab Simulink：基于三相整流器直接功率（DPC）控制的无锁相环电压控制（SCI1区lunwen复现）组成部分及功能：1.主电路：由两电平整流器+单L滤波器+电网组成，电网为三相电
资源内容介绍
Matlab Simulink：基于三相整流器直接功率（DPC）控制的无锁相环电压控制（SCI1区lunwen复现）组成部分及功能：1.主电路：由两电平整流器+单L滤波器+电网组成，电网为三相电，相电压有效值220 V，频率50 Hz2.控制模块：采用电压外环，功率内环控制3.坐标变，仅含有电网电压abc坐标系到αβ坐标系的变4.调制模块，采用SVPWM，开关频率固定20kHz5.观测模块，示波器观测，同时将数据输出到工作空间以便于画图。仿真优点有两点：1.无需锁相环，所有的计算都是在αβ坐标系下进行的2.开关频率固定，传统的DPC需要用到滞环比较器，从而开关频率不固定，该仿真能够固定开关频率仿真在1.5s处改变电压给定值，在2s处改变无功功率输出给定值，可以看出，仿真波形质量良好。 <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/90213962/2/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/90213962/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">**Matlab Simulink<span class="_ _0"> </span><span class="ff2">中三相整流器直接功率控制的无锁相环电压控制研究</span>**</div><div class="t m0 x1 h2 y2 ff2 fs0 fc0 sc0 ls0 ws0">一<span class="ff3">、</span>引言</div><div class="t m0 x1 h2 y3 ff2 fs0 fc0 sc0 ls0 ws0">随着电力电子技术的发展<span class="ff4">，</span>三相整流器的控制策略逐渐成为研究热点<span class="ff3">。</span>本文基于<span class="_ _1"> </span><span class="ff1">Matlab Simulink</span></div><div class="t m0 x1 h2 y4 ff2 fs0 fc0 sc0 ls0 ws0">平台<span class="ff4">，</span>对一种新型的三相整流器直接功率控制<span class="ff4">（<span class="ff1">DPC</span>）</span>进行了深入研究<span class="ff4">，</span>特别是其在无锁相环电压控</div><div class="t m0 x1 h2 y5 ff2 fs0 fc0 sc0 ls0 ws0">制<span class="ff4">（<span class="ff1">SCI</span>）</span>方面的应用<span class="ff3">。</span>该策略具有无需锁相环和开关频率固定的优点<span class="ff4">，</span>为我们提供了一个有效的解</div><div class="t m0 x1 h2 y6 ff2 fs0 fc0 sc0 ls0 ws0">决三相整流器控制的思路<span class="ff3">。</span></div><div class="t m0 x1 h2 y7 ff2 fs0 fc0 sc0 ls0 ws0">二<span class="ff3">、</span>系统组成及功能</div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff2">主电路<span class="ff4">：</span>系统由两电平整流器<span class="ff3">、</span>单<span class="_ _1"> </span></span>L<span class="_ _0"> </span><span class="ff2">滤波器以及三相电网组成<span class="ff3">。</span>电网采用三相电<span class="ff4">，</span>相电压有效值</span></div><div class="t m0 x2 h2 y9 ff2 fs0 fc0 sc0 ls0 ws0">为<span class="_ _1"> </span><span class="ff1">220V<span class="ff4">，</span></span>频率为<span class="_ _1"> </span><span class="ff1">50Hz<span class="ff3">。</span></span></div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff2">控制模块<span class="ff4">：</span>本策略采用电压外环和功率内环的控制方式<span class="ff3">。</span>通过这种方式<span class="ff4">，</span>系统能够快速响应电压</span></div><div class="t m0 x2 h2 yb ff2 fs0 fc0 sc0 ls0 ws0">变化<span class="ff4">，</span>并维持稳定的功率输出<span class="ff3">。</span></div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff2">坐标变换<span class="ff4">：</span>系统中只包含电网电压<span class="_ _1"> </span></span>abc<span class="_ _0"> </span><span class="ff2">坐标系到<span class="_ _1"> </span><span class="ff5">αβ<span class="_ _0"> </span></span>坐标系的变换<span class="ff3">。</span>这种变换简化了系统的复杂</span></div><div class="t m0 x2 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">性<span class="ff4">，</span>提高了计算效率<span class="ff3">。</span></div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">4.<span class="_ _2"> </span><span class="ff2">调制模块<span class="ff4">：</span>采用<span class="_ _1"> </span></span>SVPWM<span class="ff4">（<span class="ff2">空间矢量脉宽调制</span>）<span class="ff2">技术</span>，<span class="ff2">开关频率固定为<span class="_ _1"> </span></span></span>20kHz<span class="ff3">。<span class="ff2">固定开关频率有</span></span></div><div class="t m0 x2 h2 yf ff2 fs0 fc0 sc0 ls0 ws0">利于电磁设计的优化和提高系统效率<span class="ff3">。</span></div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">5.<span class="_ _2"> </span><span class="ff2">观测模块<span class="ff4">：</span>通过示波器观测系统的实时状态<span class="ff4">，</span>同时<span class="ff4">，</span>将数据输出到工作空间以便于后续的数据分</span></div><div class="t m0 x2 h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">析和图形绘制<span class="ff3">。</span></div><div class="t m0 x1 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">三<span class="ff3">、</span>无锁相环电压控制的原理及优势</div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">在传统的电力系统中<span class="ff4">，</span>锁相环被广泛应用于电压控制中<span class="ff4">，</span>用以捕捉电网电压的相位信息<span class="ff3">。</span>然而<span class="ff4">，</span>本策</div><div class="t m0 x1 h2 y14 ff2 fs0 fc0 sc0 ls0 ws0">略摒弃了锁相环<span class="ff4">，</span>所有的计算均在<span class="_ _1"> </span><span class="ff5">αβ<span class="_ _0"> </span></span>坐标系下进行<span class="ff3">。</span>这不仅简化了系统结构<span class="ff4">，</span>还提高了系统的动态</div><div class="t m0 x1 h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">响应速度和稳定性<span class="ff3">。</span></div><div class="t m0 x1 h2 y16 ff2 fs0 fc0 sc0 ls0 ws0">四<span class="ff3">、</span>直接功率控制的实现及优点</div><div class="t m0 x1 h2 y17 ff2 fs0 fc0 sc0 ls0 ws0">传统的<span class="_ _1"> </span><span class="ff1">DPC<span class="_ _0"> </span></span>策略需要用到滞环比较器<span class="ff4">，</span>因此开关频率不固定<span class="ff3">。</span>而本策略通过优化算法和<span class="_ _1"> </span><span class="ff1">SVPWM<span class="_ _0"> </span></span>技术</div><div class="t m0 x1 h2 y18 ff2 fs0 fc0 sc0 ls0 ws0">的结合<span class="ff4">，</span>实现了开关频率的固定<span class="ff3">。</span>这不仅有利于电磁设计的优化<span class="ff4">，</span>还提高了系统的效率和使用寿命<span class="ff3">。</span></div><div class="t m0 x1 h2 y19 ff2 fs0 fc0 sc0 ls0 ws0">五<span class="ff3">、</span>仿真实验及结果分析</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>