C2000Ware Digital Power SDK  5.03.00.00
TIDA-010938 - 10kW GaN-based Single-phase String Inverter with BESS

Table of Contents

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Target Applications

  • String inverter
  • Energy storage power conversion system (PCS)

Features & Specification

  • Bidirectional DC-DC stage configurable for wide battery voltage ranges
  • Configurable DC-AC stage (HERIC, H-Bridge uni and bi-polar modulation schemes)
  • 2 × power density improvement makes solar inverters lighter and easier to install (2.6kW/L)
TIDA-010938 Design Specification
Output options 1 2 3 4 5 6
Vin (Min) (V) 200 80 480 200 80 220
Vin (Max) (V) 500 500 520 500 500 240
Vout (Nom) (V) 500 500 480 230 230 480
Iout (Max) (A) 14.4 14.4 15 15.6 15.6 7.5
Output Power (W) 7200 7200 7200 3588 3588 3600
Isolated/Non-Isolated Non-Isolated
Input Type DC AC
Topology Boost Boost Buck Boost Boost Buck

Description

This reference design provides an overview into the implementation of a GaN-based single-phase string inverter with bidirectional power conversion system for Battery Energy Storage Systems (BESS).

The design consists of two string inputs, each able to handle up to 10 photovoltaic (PV) panels in series and one energy storage system port that can handle battery stacks ranging from 50 V to 500 V. The combined rated power from string inputs to the BESS is up to 10 kW.

The configurable DC-AC converter can support up to 4.6 kW into a single-phase grid connection at 230 V. Digital control of the three power stages is executed on a single C2000™ TMS320F280039C real-time MCU.

TIDA-010938 EVM Board
TIDA-010938 System Block Diagram

Relevant Links

Useful links regarding the reference design are provided below:

Note
To import and evaulate CCS project using the button above, please access the current page via Resource Explorer from Code Composer Studio (CCS), or CCS Cloud. (go to CCS->View->Resource Explorer)

Steps to Run the Example

  • It's strongly recommended to first read through the User Guide/Software Guide for any specific setup instructions and hazard warnings before proceeding.
  • To import CCS projects, either import via the button above or mannually select the file directory where this solutions resides.
  • Build the project within the CCS project menu, then launch a CCS debug session and run the executable.
Warning
When running the example, the MCU GND is referred to the negative rail of the power. Hence it is extremely important and mandatory to use an isolated 12 V supply and an USB isolator!

Release Notes

Shown below lists all the software revision history for this reference design:

Software Version SDK Release Changelog
v1.00.00 5.03.00.00

First release, on F28003x devices in C2000Ware Digital Power SDK

Hardware design files

For EVM design files such as schematics, BOM, PCB layouts & assembly files, please visit TI design webpage from the link above.

Help and Support

For additional help and support, please visit TI E2E™ design support forums