On Grid Solar Inverter

Abstract

A grid tie solar inverter system includes a DC solar array generating a DC voltage and a DC current. A DC bus is connected to the DC solar array to receive the DC current from the DC solar array. A battery bank is connected to the DC bus to transfer the DC current of the DC solar array to charge a plurality of batteries of the battery bank. At least one inverter is connected to the DC bus thereby connecting the DC bus to an AC grid. The inverter is operated either to transfer stored energy of the battery bank to the AC grid or to transfer AC power from the AC grid to the battery bank to charge the battery bank. A controller in communication with the battery bank monitors DC solar array and battery bank operating condition.

Keywords: AC, DC, solar panel, resistor, microcontroller, grid, etc