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Single-Phase Inverter Reference Design With Voltage Source and Grid Connected Modes

Texas Instruments

This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is the voltage source mode using an output LC filter. This control mode is typically used in uninterruptible power supplies (UPS). Second is grid connected mode with an output LCL filter: which is typically used in solar inverters. Firmware for the design is supported under the powerSUITE framework which enables adaptation using the Solution Adapter and enables tuning of the control loop using the Compensation Designer and SFRA. High-efficiency: low THD and intuitive software make this design attractive for engineers working on inverter design for UPS and alternative energy applications such as PV inverters: grid storage and micro grids.

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Features

Hardware FeaturesBaseboard with interface to accept HSEC180 controlCARDs380V DC input: 110Vrms 60Hz or 220Vrms 50Hz outputVoltage Source and Grid Connected modes98% peak efficiencyLow total harmonic distortion (THD) Software FeaturesFree download of Code Composer Studio IDEFree download of C2000Ware-DigitalPower-SDKwhich includes application libraries and firmware for this board in addition to device drivers and example projects for C2000 MCUsEasy adaptation of software and tuning of custom power stage using powerSUITE tools: Solution Adapter: SFRA and Compensation DesignerImplementation of key algorithms such as adaptive proportional resonant (PR) and resonant controllers: software phase locked loop (SPLL) for grid sync and active damping of LCL resonance using an adaptive fourth-order notch filter Get StartedRead the User’s GuideInstall Code Composer Studio IDEInstall C2000WARE-DIGITALPOWER-SDKNavigate to the installation directory and refer to C2000Ware_DigitalPower_SDK_\solutions\ tidm_hv_1ph_dcac for all HW files and SW examples for this TI EVMFor steps to import the project refer to the User’s Guide for this solutionAsk questions on the TI C2000 E2E Community Forum