Simulation of single-phase photovoltaic inverter

What is a single phase inverter circuit?

Single-phase inverter circuits are divided into three main divisions which are the inverter part that consists of the MOSFET switch, the control circuit which generates switching pulses generated through the microcontroller and filter parts that contain inductors, capacitors and resistors to reduce harmonic.

What is state space averaging in photovoltaic inverter?

The state space averaging method is used to construct the mathematical model of single-phase photovoltaic inverter. On the basis of the double closed-loop control strategy, the PI controller is used for the current control of the inner loop, and the quasi-PR controller is used for the outer loop control of the voltage.

What is a transformerless photovoltaic (PV) residential system?

This example shows the operation of a typical transformerless photovoltaic (PV) residential system connected to the electrical utility grid. The SPS PV array model implements a PV array built of series- and parallel-connected PV modules.

What is a PV inverter system?

PV inverter system consists of a solar array and a dc link capacitor C, on the input dc side with an output ac filter (LCL), and grid connection on the ac side. The number of panels in the string has to ensure a dc voltage higher than the ac voltage peak of all time .

What is a PV converter based on?

The typical PV converter is based on a two stages converter [2, 3]. Normally, the first stage is a DC-DC boost type converter which along with MPPT control, extracts the maximum power from the panel and boosts the PV voltage to a value higher than the peak of the grid voltage.

How many watts can a solar inverter produce?

At 25 degrees C and with a solar irradiance of 1000 W/m2, the string can produce 3500 W. Two small capacitors, connected on the + and - terminals of the PV array, are used to model the parasitic capacitance between the PV modules and the ground. The inverter is modeled using a PWM-controlled single-phase full-bridge IGBT module ( H-bridge).