11电平三相MMC（模块化多电平流器）逆变器并网 双闭环 载波移相调制 电容电压均衡控制 二倍频环流抑制控制 simulink仿

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11电平三相MMC（模块化多电平流器）逆变器并网 双闭环 载波移相调制 电容电压均衡控制 二倍频环流抑制控制 simulink仿真 1.采用双闭环控制，外环PQ控制，内环控制并网电流。 并网电流波形质量好，输出功率跟随指令值，额定容量10MW 2.模型桥臂子模块10个，11电平，采用载波移相调制。 3.采用负序环流抑制（CCSC）抑制桥臂二倍频环流，采用电容电压均衡控制，均压效果良好。 模型版本为21a，附参考文献
<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/89867021/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/89867021/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="ff3">（</span></span>模块化多电平换流器<span class="ff3">）</span>逆变器并网<span class="ff2"> </span>实现双闭环控制的载波移相调制技术和电容电压</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">均衡控制</div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">摘要<span class="ff3">：</span>本文主要介绍了一种采用电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变器并网的双闭环控制系统<span class="ff4">。</span>该系统采用了载波移相</div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">调制技术和电容电压均衡控制技术<span class="ff3">，</span>能够有效提高并网电流波形质量和输出功率跟随指令值<span class="ff4">。</span>同时<span class="ff3">，</span></div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">采用负序环流抑制技术抑制桥臂的二倍频环流<span class="ff3">，</span>并通过电容电压均衡控制技术实现均压效果良好<span class="ff4">。</span>该</div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">系统的模型版本为<span class="_ _0"> </span><span class="ff2">21a<span class="ff3">，</span></span>具备良好的性能和稳定性<span class="ff4">。</span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">关键词<span class="ff3">：</span>电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变器并网<span class="ff3">；</span>双闭环控制<span class="ff3">；</span>载波移相调制技术<span class="ff3">；</span>电容电压均衡控制技术<span class="ff3">；</span>负序</div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">环流抑制技术<span class="ff3">；</span>模型版本<span class="_ _0"> </span><span class="ff2">21a</span></div><div class="t m0 x1 h2 y9 ff2 fs0 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span><span class="ff1">引言</span></div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">近年来<span class="ff3">，</span>随着电力市场的发展和对可再生能源的需求增加<span class="ff3">，</span>逆变器并网技术在电力系统中得到广泛应</div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">用<span class="ff4">。</span>为了提高并网电流波形质量和输出功率跟随指令值<span class="ff3">，</span>研究人员提出了一种基于电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变</div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">器的双闭环控制系统<span class="ff4">。</span>本文将详细介绍这种控制系统的关键技术<span class="ff3">，</span>包括载波移相调制技术和电容电压</div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">均衡控制技术<span class="ff3">，</span>并探讨其性能和稳定性<span class="ff4">。</span></div><div class="t m0 x1 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">2.<span class="_ _2"> </span><span class="ff1">双闭环控制系统</span></div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变器并网系统采用双闭环控制结构<span class="ff3">，</span>分为外环<span class="_ _0"> </span><span class="ff2">PQ<span class="_ _1"> </span></span>控制和内环并网电流控制<span class="ff4">。</span>外环<span class="_ _0"> </span><span class="ff2">PQ</span></div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">控制用于控制逆变器的有功功率和无功功率<span class="ff3">，</span>内环并网电流控制用于控制逆变器的输出电流<span class="ff4">。</span>通过这</div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">种双闭环控制结构<span class="ff3">，</span>可以实现并网电流波形质量优良<span class="ff3">，</span>输出功率跟随指令值的特性<span class="ff4">。</span>该系统的额定容</div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">量为<span class="_ _0"> </span><span class="ff2">10MW<span class="ff4">。</span></span></div><div class="t m0 x1 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">3.<span class="_ _2"> </span><span class="ff1">载波移相调制技术</span></div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">为了实现电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变器的双闭环控制<span class="ff3">，</span>本系统采用了载波移相调制技术<span class="ff4">。</span>该技术可以有效降低</div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">逆变器的谐波含量<span class="ff3">，</span>提高并网电流波形质量<span class="ff4">。</span>在模型桥臂子模块<span class="_ _0"> </span><span class="ff2">10<span class="_ _1"> </span></span>个的情况下<span class="ff3">，</span>通过对载波频率和</div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">移相角的调整<span class="ff3">，</span>可以实现输出电压的调节<span class="ff3">，</span>进而控制逆变器的输出功率<span class="ff4">。</span>通过<span class="_ _0"> </span><span class="ff2">Simulink<span class="_ _1"> </span></span>仿真可以得</div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">到该系统的稳定性和性能<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">电容电压均衡控制技术</span></div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">为了确保逆变器桥臂电容的电压均衡<span class="ff3">，</span>本系统采用了电容电压均衡控制技术<span class="ff4">。</span>该技术可以在逆变器运</div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">行过程中实时监测桥臂电容的电压<span class="ff3">，</span>通过调节电容电压的分布<span class="ff3">，</span>实现电容电压的均衡<span class="ff4">。</span>这样可以提高</div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0">逆变器的稳定性和运行效率<span class="ff3">，</span>同时减少电容的寿命损耗<span class="ff4">。</span></div><div class="t m0 x1 h2 y1c ff2 fs0 fc0 sc0 ls0 ws0">5.<span class="_ _2"> </span><span class="ff1">负序环流抑制技术</span></div><div class="t m0 x1 h2 y1d ff1 fs0 fc0 sc0 ls0 ws0">在电平三相<span class="_ _0"> </span><span class="ff2">MMC<span class="_ _1"> </span></span>逆变器并网系统中<span class="ff3">，</span>二倍频环流是一个常见的问题<span class="ff4">。</span>为了解决这个问题<span class="ff3">，</span>本系统引入</div><div class="t m0 x1 h2 y1e ff1 fs0 fc0 sc0 ls0 ws0">了负序环流抑制技术<span class="ff4">。</span>通过控制逆变器的相序<span class="ff3">，</span>可以有效抑制桥臂的二倍频环流<span class="ff4">。</span>同时<span class="ff3">，</span>通过电容电</div><div class="t m0 x1 h2 y1f ff1 fs0 fc0 sc0 ls0 ws0">压均衡控制技术的配合<span class="ff3">，</span>可以进一步提高抑制效果<span class="ff3">，</span>保证系统的稳定性<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>
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