组串式及集中式逆变器方案比选及应用场景分析

Comparison and application scenario analysis of string and centralized inverter schemes

为研究光伏组件中逆变器的选型,对存在的直流电压转交流电压存在大量的波形失真度问题进行有效分析解决,开展对组串式逆变器与集中式逆变器的技术方案比较分析,以得出在特定光伏应用场景下的最为合适的逆变器选用方案;其次为解决逆变器的使用能效最大化问题,引入光伏阵列因素,对光照资源进行数据整合分析,得出在大型光伏发电场区中进行光伏组件安装方法的最佳搭配模式。分析结果表明:集中式逆变器具有在大型平坦且光照充足的场景中进行工程建设的突出优势。

To study the selection of inverters in photovoltaic modules and effectively analyze and solve the problem of waveform distortion in the conversion of DC voltage to AC voltage,a comparative analysis of technical solutions between series inverters and centralized inverters is carried out to obtain the most suitable inverter selection scheme in specific photovoltaic application scenarios;Secondly,to address the issue of maximizing energy efficiency in the use of inverters,the photovoltaic array factor is introduced,and data integration analysis is conducted on lighting resources to determine the optimal combination mode for photovoltaic module installation in large photovoltaic power plant areas.The analysis results indicate that centralized inverters have outstanding advantages in engineering construction in large,flat and well lit scenarios.