This paper illustrates the compensation of reactive power delivered to the grid connected inverter of photovoltaic system. By reason of weather condition sun irradiance will change, it does not deliver constant power to the grid it seems to voltage drop, poor power factor and so on. Usage of line frequency transformer can be removed while integrating the renewable energy sources to the grid without affecting the system characteristics. Here, LUO converter is designed and implemented along with the single phase inverter to integrate the solar PV to the grid without transformer usage. Fuzzy logic controller is developed to retrieve larger power from the photovoltaic system and also PI controller is used to regulate active and reactive power transfer to grid. MATLAB Simulation result shows the controlled reactive power of the grid connected photovoltaic system.

本文阐述了对输送到光伏系统并网逆变器的无功功率的补偿。由于天气条件太阳辐照度会发生变化，它不会向电网提供恒定的功率，似乎是电压下降，功率因数差等。在不影响系统特性的情况下，可以在将可再生能源并入电网的同时取消使用工频变压器。在这里，LUO 转换器与单相逆变器一起设计和实施，以将太阳能光伏发电集成到电网，而无需使用变压器。模糊逻辑控制器被开发用于从光伏系统中获取更大的功率，并且 PI 控制器用于调节向电网传输的有功和无功功率。