The string and central inverter architecture represents the traditional grid-connected photovoltaic system. It is composed of three main functional blocks connected as shown in the picture.

  • The junction box, present in each solar panel, implements the important bypass functionality.
  • The string combiner box implements the protection and monitoring of the strings.
  • The inverter implements the power conversion stages (DC-DC with MPPT and DC-AC), the communication capability and the connection to the AC grid.

The block diagram will help you make the right choice for each functional block from a wide range of recommended products.


Technical Documentation

Application Notes
Description Version Size
AN4242 AN4242: New generation of 650 V SiC diodes 1.2 2 MB
AN3095 AN3095: STEVAL-ISV002V1, STEVAL-ISV002V2 3 kW grid-connected PV system, based on the STM32F103xx 3.0 3 MB

Presentations & Training Material

Description Version Size
ST products and solutions for solar energy 5.1 2 MB

Publications and Collaterals

Description Version Size
Brochure Power management guide 05.2016 4 MB
Products and solutions for solar energy 1.0 1 MB
Magazine Articles
Description Version Size
Innovative architectures for solar energy applications: st microinverter system solution 1.0 614 KB