为适应低轨道卫星、深空探测器等航天器的应用需求,本文提出采用一种新型串并联混合式峰值功率点跟踪(Maximum Power Point Tracking,MPPT)电路拓扑结构,控制算法采用增量电导法,以保证太阳电池阵工作在峰值功率点附近,充分利用太阳电...为适应低轨道卫星、深空探测器等航天器的应用需求,本文提出采用一种新型串并联混合式峰值功率点跟踪(Maximum Power Point Tracking,MPPT)电路拓扑结构,控制算法采用增量电导法,以保证太阳电池阵工作在峰值功率点附近,充分利用太阳电池阵输出功率。文章重点介绍了新型串并联混合式MPPT电路拓扑的四种工作模式、两域控制方法和增量电导法的MPPT控制策略的实现,并搭建MPPT系统仿真平台,仿真验证结果表明,串并联MPPT拓扑结构能够快速、无扰动实现太阳电池阵峰值功率点跟踪。展开更多
Solar photovoltaic(PV)systems have gained importance as a promising renewable energy source in recent years.PV arrays are prone to variable irradiance levels under partial shading conditions due to non-uniform shading...Solar photovoltaic(PV)systems have gained importance as a promising renewable energy source in recent years.PV arrays are prone to variable irradiance levels under partial shading conditions due to non-uniform shading.As a result,there will be a decrease in the amount of power produced and hotspots will occur.To overcome these issues,it is essential to select an appropriate PV material and a suitable array configuration.To obtain the maximum output power from a PV array under partial shading conditions,this paper suggests a novel triple-series–parallel ladder topology with monocrystalline PV material.Considering short and wide,long and wide,short and narrow,long and narrow,middle and diagonal shading situations,a 6×6-sized array has been considered and compared with other existing configurations such as total cross-tied,bridge-link,honeycomb,series–parallel and series–parallel cross-tied.The proposed configuration has an optimal number of cross ties to produce maximum power.It has 4 cross ties fewer than a honeycomb,3 cross ties fewer than a bridge link,16 cross ties fewer than a total cross-tied and 7 cross ties fewer than series–parallel cross-tied configurations.The proposed configuration has an improvement in power of 0.1%to 20%compared with other configurations under the considered shading scenarios.展开更多
文摘为适应低轨道卫星、深空探测器等航天器的应用需求,本文提出采用一种新型串并联混合式峰值功率点跟踪(Maximum Power Point Tracking,MPPT)电路拓扑结构,控制算法采用增量电导法,以保证太阳电池阵工作在峰值功率点附近,充分利用太阳电池阵输出功率。文章重点介绍了新型串并联混合式MPPT电路拓扑的四种工作模式、两域控制方法和增量电导法的MPPT控制策略的实现,并搭建MPPT系统仿真平台,仿真验证结果表明,串并联MPPT拓扑结构能够快速、无扰动实现太阳电池阵峰值功率点跟踪。
文摘Solar photovoltaic(PV)systems have gained importance as a promising renewable energy source in recent years.PV arrays are prone to variable irradiance levels under partial shading conditions due to non-uniform shading.As a result,there will be a decrease in the amount of power produced and hotspots will occur.To overcome these issues,it is essential to select an appropriate PV material and a suitable array configuration.To obtain the maximum output power from a PV array under partial shading conditions,this paper suggests a novel triple-series–parallel ladder topology with monocrystalline PV material.Considering short and wide,long and wide,short and narrow,long and narrow,middle and diagonal shading situations,a 6×6-sized array has been considered and compared with other existing configurations such as total cross-tied,bridge-link,honeycomb,series–parallel and series–parallel cross-tied.The proposed configuration has an optimal number of cross ties to produce maximum power.It has 4 cross ties fewer than a honeycomb,3 cross ties fewer than a bridge link,16 cross ties fewer than a total cross-tied and 7 cross ties fewer than series–parallel cross-tied configurations.The proposed configuration has an improvement in power of 0.1%to 20%compared with other configurations under the considered shading scenarios.
