在建筑集成光伏(building integrated photovoltaic,BIPV)系统中,光伏组件作为具有发电能力的表面建筑材料,通常有不同的安装方向和角度,且易受到周围建筑物等形成的局部阴影影响,而采用常规的集中式、串式和多串式技术的电气结构由于...在建筑集成光伏(building integrated photovoltaic,BIPV)系统中,光伏组件作为具有发电能力的表面建筑材料,通常有不同的安装方向和角度,且易受到周围建筑物等形成的局部阴影影响,而采用常规的集中式、串式和多串式技术的电气结构由于系统最大功率点跟踪(maximum power point tracking,MPPT)以光伏组件串或阵列为单位,难于获得高的能量变换效率,甚至可能形成热斑,导致光伏组件的不可逆损坏。为了解决上述问题,该文提出了一种直流模块式BIPV,该系统以将光伏组件、具有MPPT功能的高增益DC-DC变换器和表面建筑材料集成为一体的光伏直流建筑模块为核心,降低了系统成本,且每个光伏组件具有独立的MPPT,增强了系统抗阴影能力。论述了光伏直流建筑模块其拓扑设计的原则,比较分析了一族候选拓扑的性能,选择了一种适合的有源箝位型电流馈入的半桥变换拓扑做为光伏直流建筑模块中的集成DC-DC变换器,构建了直流模块式系统的实验原型,验证了系统的可行性。展开更多
This paper discusses the potential and prospect of building-integrated photovoltaics (BIPV) for solar electrical power generation in China.The BIPV technology has been identified as the most economical renewable energ...This paper discusses the potential and prospect of building-integrated photovoltaics (BIPV) for solar electrical power generation in China.The BIPV technology has been identified as the most economical renewable energy resource to contribute to world electrical energy demand for protecting environment from reduced fossil fuel consumption.The available solar energy resource of 14 cities and the potential power generation from PV claddings in buildings in China were estimated.The economical analysis of BIPV application is discussed.It is found that the potential is significant and the government should play an important role in its development.展开更多
文摘在建筑集成光伏(building integrated photovoltaic,BIPV)系统中,光伏组件作为具有发电能力的表面建筑材料,通常有不同的安装方向和角度,且易受到周围建筑物等形成的局部阴影影响,而采用常规的集中式、串式和多串式技术的电气结构由于系统最大功率点跟踪(maximum power point tracking,MPPT)以光伏组件串或阵列为单位,难于获得高的能量变换效率,甚至可能形成热斑,导致光伏组件的不可逆损坏。为了解决上述问题,该文提出了一种直流模块式BIPV,该系统以将光伏组件、具有MPPT功能的高增益DC-DC变换器和表面建筑材料集成为一体的光伏直流建筑模块为核心,降低了系统成本,且每个光伏组件具有独立的MPPT,增强了系统抗阴影能力。论述了光伏直流建筑模块其拓扑设计的原则,比较分析了一族候选拓扑的性能,选择了一种适合的有源箝位型电流馈入的半桥变换拓扑做为光伏直流建筑模块中的集成DC-DC变换器,构建了直流模块式系统的实验原型,验证了系统的可行性。
文摘This paper discusses the potential and prospect of building-integrated photovoltaics (BIPV) for solar electrical power generation in China.The BIPV technology has been identified as the most economical renewable energy resource to contribute to world electrical energy demand for protecting environment from reduced fossil fuel consumption.The available solar energy resource of 14 cities and the potential power generation from PV claddings in buildings in China were estimated.The economical analysis of BIPV application is discussed.It is found that the potential is significant and the government should play an important role in its development.
