首页|基于离网型微电网系统的光伏逆变控制策略研究

基于离网型微电网系统的光伏逆变控制策略研究

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为保证整个微电网安全、高效、长寿命运行,提高和改善全钒液流电池(VFB)充放电速度,并提高光伏发电效率、降低发电成本,一直是研究微电网系统需要解决的问题.从构建的光伏阵列数学模型出发,提出了基于变步长扰动观察法的最大功率点追踪算法(MPPT)和基于 SOC 的三闭环柔性充放电控制策略.通过仿真分析得到在光照和温度突变的环境下,变步长扰动 MPPT算法能够快速响应和追踪到光伏阵列的最大功率点,基于 SOC的三闭环柔性充放电控制策略可实现快速响应和稳定的充放电性能,对于提高 VFB的储电能力,延长 VFB的使用寿命具有重要价值.
Isolated-microgrid-based Inverter Control Strategy for Photovoltaic Arrays
In order to ensure safe,efficient and durable operation of the whole microgrid,how to accelerate charge and discharge of all vanadium redox flow cells(VFB)and to improve efficiency and cost of photovoltaic generation has always been a problem to be solved in research of microgrid system.The present study proposed variable-step-disturbance-based MPPT algorithm and SOC-based three-loop flexible charge-discharge control strategy starting from mathematically modeling photovoltaic arrays.The variable-step-disturbance-based MPPT and the SOC-based three-loop flexible charge-discharge control were proved through simulation analysis capable of quickly responding and determining arrays'maximum power point,and realizing VFBs'fast response and stable charge-discharge performance,respectively,under sudden changes in light and temperature,and thereby to have great applicative potential in improving storage capacity and service life of VFB.

vanadium redox flow batterymicrogridenergy inverter controlcharge and discharge control technology

孟青、杨智菲、许超、郑建丽

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清华大学电机工程与应用技术系,北京 100084

山西国润储能科技有限公司,山西 朔州 036000

全钒液流电池 微电网 能量逆变控制 充放电控制

山西省科技攻关计划

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(4)
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