光伏交直流混合微电网离网(孤岛)模式双下垂控制Matlab Simulink仿真模型交直流混合微电网结构:1.直流微电网,由

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光伏交直流混合微电网离网(孤岛)模式双下垂控制Matlab Simulink仿真模型 交直流混合微电网结构: 1.直流微电网,由光伏板+Boost变器组成,最大输出功率10 kW。 2.交流微电网,由光伏板+Boost变器+LCL逆变器组成,最大输出功率15 kW。 3.互联变器(ILC),由LCL逆变器组成,用于连接交直流微电网。 模型内容: 1.直流微电网采用下垂控制,控制方式为电压电流双闭环,直流母线额定电压700 V。 2.交流微电网中,Boost变器采用恒压控制,直流电容电压为700 V,LCL逆变器采用下垂控制,额定频率50 Hz,额定相电压有效值220 V。 3.ILC采用双下垂控制策略,首先将交流母线频率和直流母线电压进行归一化,使其范围控制在[-1,1],之后通过ILC的归一化下垂控制调节交流母线频率和直流母线电压的偏差,最终使二者数值相同。 4.其余部分包括采样保持、坐标变、功率滤波、SVPWM等环节。 0.5 s时刻负载由12 kW增至16 kW,可以看出系统仍能稳定运行,波形质量良好,且交流母线频率和直流母线电压归一化的参数在ILC控制下趋于一致。 仿真版本为M

<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/89867111/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/89867111/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">光伏交直流混合微电网离网<span class="ff2">(</span>孤岛<span class="ff2">)</span>模式双下垂控制<span class="_ _0"> </span><span class="ff3">Matlab Simulink<span class="_ _1"> </span></span>仿真模型</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">引言</div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">随着可再生能源的快速发展<span class="ff2">,</span>微电网作为一种新型的能源发电和分配方式受到了广泛关注<span class="ff4">。</span>其中<span class="ff2">,</span>光</div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">伏交直流混合微电网在离网<span class="ff2">(</span>孤岛<span class="ff2">)</span>模式下具有广阔的应用前景<span class="ff4">。</span>本文将基于<span class="_ _0"> </span><span class="ff3">Matlab Simulink<span class="_ _1"> </span></span>平</div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">台<span class="ff2">,</span>通过搭建模型对光伏交直流混合微电网的双下垂控制进行仿真研究<span class="ff4">。</span></div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">一<span class="ff4">、</span>交直流混合微电网结构</div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">光伏交直流混合微电网由直流微电网和交流微电网组成<span class="ff2">,</span>下面对其结构进行介绍<span class="ff2">:</span></div><div class="t m0 x1 h2 y8 ff3 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff1">直流微电网<span class="ff2">:</span>由光伏板和<span class="_ _0"> </span></span>Boost<span class="_ _1"> </span><span class="ff1">变换器组成<span class="ff2">,</span>最大输出功率为<span class="_ _0"> </span></span>10 kW<span class="ff4">。<span class="ff1">直流微电网采用下垂控</span></span></div><div class="t m0 x2 h2 y9 ff1 fs0 fc0 sc0 ls0 ws0">制<span class="ff2">,</span>控制方式为电压电流双闭环<span class="ff2">,</span>直流母线额定电压为<span class="_ _0"> </span><span class="ff3">700 V<span class="ff4">。</span></span></div><div class="t m0 x1 h2 ya ff3 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff1">交流微电网<span class="ff2">:</span>由光伏板<span class="ff4">、</span></span>Boost<span class="_ _1"> </span><span class="ff1">变换器和<span class="_ _0"> </span></span>LCL<span class="_ _1"> </span><span class="ff1">逆变器组成<span class="ff2">,</span>最大输出功率为<span class="_ _0"> </span></span>15 kW<span class="ff4">。<span class="ff1">交流微电</span></span></div><div class="t m0 x2 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">网中<span class="ff2">,<span class="ff3">Boost<span class="_ _1"> </span></span></span>变换器采用恒压控制<span class="ff2">,</span>直流电容电压为<span class="_ _0"> </span><span class="ff3">700 V<span class="ff2">,</span>LCL<span class="_ _1"> </span></span>逆变器采用下垂控制<span class="ff2">,</span>额定</div><div class="t m0 x2 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">频率为<span class="_ _0"> </span><span class="ff3">50 Hz<span class="ff2">,</span></span>额定相电压有效值为<span class="_ _0"> </span><span class="ff3">220 V<span class="ff4">。</span></span></div><div class="t m0 x1 h2 yd ff3 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">互联变换器<span class="ff2">(</span></span>ILC<span class="ff2">):<span class="ff1">由<span class="_ _0"> </span></span></span>LCL<span class="_ _1"> </span><span class="ff1">逆变器组成<span class="ff2">,</span>用于连接交直流微电网<span class="ff4">。</span></span>ILC<span class="_ _1"> </span><span class="ff1">采用双下垂控制策略</span></div><div class="t m0 x2 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">,<span class="ff1">通过归一化下垂控制调节交流母线频率和直流母线电压的偏差</span>,<span class="ff1">最终使二者数值相同<span class="ff4">。</span></span></div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">二<span class="ff4">、</span>模型内容</div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">光伏交直流混合微电网离网模型主要包括以下内容<span class="ff2">:</span></div><div class="t m0 x1 h2 y11 ff3 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff1">直流微电网模型<span class="ff2">:</span>采用下垂控制<span class="ff2">,</span>控制方式为电压电流双闭环<span class="ff2">,</span>直流母线额定电压为<span class="_ _0"> </span></span>700 V<span class="ff4">。</span></div><div class="t m0 x1 h2 y12 ff3 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff1">交流微电网模型<span class="ff2">:</span></span>Boost<span class="_ _1"> </span><span class="ff1">变换器采用恒压控制<span class="ff2">,</span>直流电容电压为<span class="_ _0"> </span></span>700 V<span class="ff2">;</span>LCL<span class="_ _1"> </span><span class="ff1">逆变器采用下垂</span></div><div class="t m0 x2 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">控制<span class="ff2">,</span>额定频率为<span class="_ _0"> </span><span class="ff3">50 Hz<span class="ff2">,</span></span>额定相电压有效值为<span class="_ _0"> </span><span class="ff3">220 V<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y14 ff3 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">互联变换器模型<span class="ff2">:</span>采用双下垂控制策略<span class="ff2">,</span>通过归一化下垂控制调节交流母线频率和直流母线电压</span></div><div class="t m0 x2 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">的偏差<span class="ff2">,</span>最终使二者数值相同<span class="ff4">。</span></div><div class="t m0 x1 h2 y16 ff3 fs0 fc0 sc0 ls0 ws0">4.<span class="_ _2"> </span><span class="ff1">其他环节<span class="ff2">:</span>采样保持<span class="ff4">、</span>坐标变换<span class="ff4">、</span>功率滤波<span class="ff4">、</span></span>SVPWM<span class="_ _1"> </span><span class="ff1">等<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">三<span class="ff4">、</span>仿真结果</div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>
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