Reference Designs and Associated Training Videos

C2000™ MCUs - Digital Power (Video)
This training series covers the basics of digital power control and how to implement it on C2000 microcontrollers.

Four Key Design Considerations When Adding Energy Storage to Solar Power Grids
This white paper explores the design considerations in a grid-connected storage-integrated solar installation system

C2000WARE-DIGITALPOWER-SDK
DigitalPower SDK for C2000™ microcontrollers (MCU) is a cohesive set of software infrastructure, tools, and documentation designed to minimize C2000 MCU based digital power system development time targeted for various AC-DC, DC-DC and DC-AC power supply applications. The software includes firmware that runs on C2000 digital power evaluation modules (EVMs) and TI designs (TIDs) which are targeted for solar, telecom, server, electric vehicle chargers and industrial power delivery applications. DigitalPower SDK provides all the needed resources at every stage of development and evaluation in a digital power application

Digitally Controlled Solar Micro Inverter Design using C2000™ Piccolo Microcontroller
This document presents the implementation details of a digitally-controlled solar micro inverter using the C2000 microcontroller. A 250-W isolated micro inverter design presents all the necessary PV inverter functions using the Piccolo-B (F28035) control card. This document describes the power stages on the micro inverter board, as well as an incremental build level system that builds the software by verifying open loop operation and closed loop operation. This guide describes control structures and algorithms for controlling power flow, maximizing power from the PV panel (MPPT), and locking to the grid using phase locked loop (PLL), along with hardware details of Texas Instruments Solar Micro Inverter Kit (TMDSOLARUINVKIT)

TIDU405B Grid-tied Solar Micro Inverter with MPPT
This C2000 Solar Micro Inverter EVM hardware consists of two stages. These are: (1) an active clamp fly-back DC/DC converter with secondary voltage multiplier and, (2) a DC-AC inverter. A block diagram of this system is shown in Figure 1b. The DC-DC converter draws dc current from the PV panel such that the panel operates at its maximum power transfer point. This requires maintaining the panel output (that is, the DC-DC converter input at a level determined by the MPPT algorithm). The MPPT algorithm determines the panel output current (reference current) for maximum power transfer. Then a current control loop for the fly-back converter ensures that the converter input current tracks the MPPT reference current. The fly-back converter also provides high frequency isolation for the DC-DC stage. The output of the fly-back stage is a high voltage DC bus which drives the DC-AC inverter. The inverter stage maintains the DC bus at a desired set point and injects controlled sine wave current into the grid. The inverter also implements grid synchronization in order to maintain its current waveform locked to phase and frequency of the grid voltage. A C2000 piccolo microcontroller with its on-chip PWM, ADC and analog comparator modules is able to implement complete digital control of such micro inverter system.

Software Phase Locked Loop Design Using C2000™ Microcontrollers for Single Phase Grid Connected Inverter Application Report
Grid connected applications require an accurate estimate of the grid angle to feed power synchronously to the grid. This is achieved using a software phase locked loop (PLL). This application report discusses different challenges in the design of software phase locked loops and presents a methodology to design phase locked loops using C2000 controllers for single phase grid connection applications.