Reactive power control of three-phase module integrated PV micro-inverter based on boost converter

Abstract EN

In recent years, photovoltaic power generation has become a creative technology.

This technology uses solar energy to overcome the energy shortages in modern power systems because of increasing environmental problems in traditional power generation systems.

It has irreplaceable benefits like pollution reduction and has increasingly been turned into a new path for distributing power generation applications.

In traditional PV system design to produced enough DC-bus voltage from PV panels, several PV modules are connected in series connection.

However, when certain modules are partially shadowed, the overall power generation of the PV panels often falls significantly, reducing its essential current generation and preventing the output current from reaching its maximum value within that panels.

An AC modules strategy was suggested in this paper to solve this drawback.

The PV system with an interleaved DC-DC boost converter and maximum power point tracker (MPPT) for each boost converter is used in the DC-DC converter stage.

The perturbation and observation (P&O) algorithm is applied to extract sun power.

In this paper, a three-phase micro-inverter voltage source inverter type (VSI) of 1000W is designed and simulated.

By controlling the direct and quadrature components of inverter output currents, the active and reactive power can be injected into the grid.

The system is simulated using MATLAB software and the simulation results show the validity of the suggested Micro-inverter system.