两级式单相光伏并网仿真研究：MATLAB 2021a版本下的DC-DC变换与桥式逆变技术实现功率跟踪与并网效果优化,基于Matlab 2021a的两级式单相光伏并网仿真研究：实现最大功率跟踪与稳定的直
资源内容介绍
两级式单相光伏并网仿真研究：MATLAB 2021a版本下的DC-DC变换与桥式逆变技术实现功率跟踪与并网效果优化,基于Matlab 2021a的两级式单相光伏并网仿真研究：实现最大功率跟踪与稳定的直流母线电压,两级式单相光伏并网仿真（注意版本matlab 2021a）前级采用DC-DC变电路，通过MPPT控制DC-DC电路的pwm波来实现最大功率跟踪,mppt采用扰动观察法，后级采用桥式逆变，用spwm波调制。采用双闭环控制，实现直流母线电压的稳定和单位功率因数。并网效果良好，thd满足并网要求，附带仿真说明文件,两级式单相光伏并网仿真; MATLAB 2021a; DC-DC变换电路; MPPT控制; 扰动观察法; 桥式逆变; SPWM波调制; 双闭环控制; 直流母线电压稳定; 单位功率因数; 并网效果; THD。,MATLAB 2021a双闭环控制两级式单相光伏并网仿真研究 <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/90405531/2/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/90405531/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">标题<span class="ff2">：</span>基于两级式单相光伏并网仿真的控制策略研究</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">摘要<span class="ff2">：</span></div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">本文基于<span class="_ _0"> </span><span class="ff3">Matlab 2021a<span class="_ _1"> </span></span>版本<span class="ff2">，</span>针对两级式单相光伏并网系统进行了仿真研究<span class="ff4">。</span>前级采用<span class="_ _0"> </span><span class="ff3">DC-DC<span class="_ _1"> </span></span>变</div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">换电路<span class="ff2">，</span>通过<span class="_ _0"> </span><span class="ff3">MPPT<span class="_ _1"> </span></span>控制<span class="_ _0"> </span><span class="ff3">DC-DC<span class="_ _1"> </span></span>电路的<span class="_ _0"> </span><span class="ff3">pwm<span class="_ _1"> </span></span>波来实现最大功率跟踪<span class="ff2">，<span class="ff3">MPPT<span class="_ _1"> </span></span></span>采用扰动观察法<span class="ff2">；</span>后级采</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">用桥式逆变<span class="ff2">，</span>用<span class="_ _0"> </span><span class="ff3">spwm<span class="_ _1"> </span></span>波调制<span class="ff4">。</span>通过采用双闭环控制策略<span class="ff2">，</span>实现了直流母线电压的稳定和单位功率因</div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">数<span class="ff4">。</span>仿真结果表明<span class="ff2">，</span>该并网系统具有良好的并网效果<span class="ff2">，</span>并满足并网要求<span class="ff4">。</span>附带本文的仿真说明文件<span class="ff4">。</span></div><div class="t m0 x1 h2 y7 ff3 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff1">引言</span></div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">随着可再生能源的快速发展<span class="ff2">，</span>光伏发电系统逐渐成为清洁能源的重要组成部分<span class="ff4">。</span>为了提高光伏发电系</div><div class="t m0 x1 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">统的效率和稳定性<span class="ff2">，</span>两级式单相光伏并网系统被广泛应用<span class="ff4">。</span>本文旨在通过仿真研究<span class="ff2">，</span>探讨该系统的控</div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">制策略<span class="ff2">，</span>为实际工程应用提供参考<span class="ff4">。</span></div><div class="t m0 x1 h2 yb ff3 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff1">前级控制策略</span></div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">前级采用<span class="_ _0"> </span><span class="ff3">DC-DC<span class="_ _1"> </span></span>变换电路<span class="ff2">，</span>通过<span class="_ _0"> </span><span class="ff3">MPPT<span class="_ _1"> </span></span>控制<span class="_ _0"> </span><span class="ff3">DC-DC<span class="_ _1"> </span></span>电路的<span class="_ _0"> </span><span class="ff3">pwm<span class="_ _1"> </span></span>波来实现最大功率跟踪<span class="ff4">。</span>选择扰动观</div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">察法作为<span class="_ _0"> </span><span class="ff3">MPPT<span class="_ _1"> </span></span>的控制算法<span class="ff2">，</span>其基本原理是通过对光伏阵列电流和电压的扰动来实现光伏阵列工作在</div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">最大功率点<span class="ff4">。</span>通过合理调整<span class="_ _0"> </span><span class="ff3">pwm<span class="_ _1"> </span></span>波的占空比<span class="ff2">，</span>使得输出的直流电压在不同光照条件下都能跟踪光伏阵</div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">列的最大功率<span class="ff4">。</span></div><div class="t m0 x1 h2 y10 ff3 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">后级控制策略</span></div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">后级采用桥式逆变<span class="ff2">，</span>用<span class="_ _0"> </span><span class="ff3">spwm<span class="_ _1"> </span></span>波调制<span class="ff4">。</span>通过控制<span class="_ _0"> </span><span class="ff3">spwm<span class="_ _1"> </span></span>波的调制方式和频率<span class="ff2">，</span>实现直流母线电压的稳</div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">定和单位功率因数<span class="ff4">。</span>为了提高系统的稳定性和响应速度<span class="ff2">，</span>本文采用双闭环控制策略<span class="ff2">，</span>分别对电压环和</div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">电流环进行了控制<span class="ff4">。</span>通过合理的参数设计和控制策略<span class="ff2">，</span>保证直流母线电压在并网运行过程中具有良好</div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">的稳定性和响应性<span class="ff2">，</span>并且保持功率因数为<span class="_ _0"> </span><span class="ff3">1<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y15 ff3 fs0 fc0 sc0 ls0 ws0">4.<span class="_ _2"> </span><span class="ff1">仿真结果分析</span></div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">本文通过<span class="_ _0"> </span><span class="ff3">Matlab<span class="_ _1"> </span></span>仿真验证了所提出的两级式单相光伏并网系统的控制策略<span class="ff4">。</span>仿真结果表明<span class="ff2">，</span>在不同</div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">光照条件下<span class="ff2">，</span>系统能够实现最大功率跟</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>