Photovoltaic inverter control board

What is the TI solar micro inverter board design?

The micro inverter board design follows a control card concept; therefore, a different control card can be used depending on the system requirements. The TI Solar Micro Inverter board produces high voltages and should only be handled by experienced power supply professionals in a lab environment.

How to run a PV inverter system?

The objective of this build is to run the full PV inverter system with closed current loop and DC bus voltage control. To connect the PV inverter to grid, a precise state machine must be followed to start the flyback stage, connect the relay, and start the inverter.

Which microcontroller is best for a PV inverter?

The localized MPPT at each panel improves the performance of the system under partial shading and unmatched panel conditions. The Texas Instruments C2000 microcontroller family, with its enhanced peripheral set and optimized CPU core for control tasks, is ideal for controlling the power conversion. Figure 1. Grid Tied PV Inverter

Which microcontroller is used in solar micro inverter kit?

All of the key functions are implemented on the F28035 MCU for the Solar Micro Inverter kit. A C2000 piccolo microcontroller with its on-chip PWM, ADC, and analog comparator modules can implement complete digital control of a micro inverter system. Figure 4 shows a simplified diagram of different stages present on the Solar Micro Inverter kit.

How to connect a PV inverter to a grid?

To connect the PV inverter to grid, a precise state machine must be followed to start the flyback stage, connect the relay, and start the inverter. The software must detect the grid frequency and adjust the DC bus voltage regulation parameters. Figure 46 illustrates the state machine used for the PV inverter system.

How does a PV inverter work?

The PV panel is a non-linear DC source; an inverter must feed current into the grid, and a maximum power tracking algorithm must maximize power from the panel. Therefore the key challenge in any PV inverter system design is to feed a clean current into the grid while maintaining the maximum power point of the panel.