Grid-tied Solar Micro Inverter with MPPT

(ACTIVE) TIDM-SOLARUINV

Description & Features

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Description

This design is a digitally-controlled, grid-tied, solar micro inverter with maximum power point tracking (MPPT). Solar micro inverters are an emerging segment of the solar power industry. Rather than linking every solar panel in an installation to a central inverter, solar micro inverter-based installations link smaller, or “micro,” inverters individually to each solar panel. This configuration lends itself to many benefits, including elimination of partial shading conditions, increased system efficiency, improved reliability and greater modularity. For this design, a C2000™ Piccolo™ TMS320F28035 microcontroller (MCU) is the digital controller for the complete inverter, including control of the power stages, MPPT, and grid-tie synchronization. The power conversion stages include 1) an active clamp fly-back DC/DC converter with secondary voltage multiplier and 2) a grid-tied, DC/AC inverter. The design achieves 93 percent peak efficiency and less than 4 percent total harmonic distortion, providing more power output per solar panel, reducing detrimental heat dissipation, and increasing system longevity.

Features
  • Implements control of an active clamp fly-back DC/DC converter with secondary voltage multiplier, MPPT and a grid-tied DC/AC inverter, comprising the power conversion stages of the solar micro inverter
  • Supports panel voltages of 28 to 45V at input as well as universal power output at up to 280W for 220VAC and up to 140W for 110VAC, making it suitable for the diverse requirements of worldwide solar markets
  • 93 percent peak efficiency and less than four percent total harmonic distortion (THD) provide more power output per solar panel, reducing detrimental heat dissipation and increasing system longevity
  • C2000 Piccolo F28035 MCU serves as a high-performance controller for the complete micro inverter system, executing high-frequency control loops for the DC/DC and DC/AC power stages
  • Single-MCU system implementation offers design simplicity and reduced system cost
  • C2000 Piccolo F28035 MCU operates the inverter at a high PWM frequency (100 KHz) to reduce harmonic distortion and lower passive component costs
  • Solar and digital power software libraries provide code-optimized building blocks to implement a variety of power topologies and algorithms such as MPPT and Software Phase Locked Loops (PLL), perfect for designing customized solar inverter solutions
  • Fully-functional evaluation board includes software, hardware design files, quick start graphical interface and step-by-step documentation

NOTE: Software for this board is located inside the controlSUITE™ software package. Download controlSUITE at ti.com/controlsuite. Once installed, navigate to "Solar Micro Inverter Development Kit" under the Development Tools -> Solar section.


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TMDSSOLARUINVKIT:
Solar Micro Inverter Development Kit

$850.00(USD)


Pricing may vary.



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TI Devices (11)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
ISO7240C  2.5 kVrms, 25 Mbps, 4-Channel 4/0 Digital Isolator   Isolation  Sample & Buy View Design Kits & Evaluation Modules
ISO7420  Low Power Dual Channel Isolators  Isolation  Sample & Buy View Design Kits & Evaluation Modules
LM317  3/4 Pin 1.5A Adjustable Positive Voltage Regulator  Power management  Sample & Buy View Design Kits & Evaluation Modules
OPA2171  36V, Low Power, RRO, General Purpose Operational Amplifier in MicroPackages   Operational amplifiers (op amps)  Sample & Buy View Design Kits & Evaluation Modules
PTH08080W  2.25 A, 4.5-V to 18-V Input Wide Adjust Miniature Power Module  Step-down (buck)  Not Available View Design Kits & Evaluation Modules
TL431A  1% Accuracy Adjustable Precision Shunt Regulator  Voltage references  Sample & Buy Not Available
TMS320F28035  Piccolo™ 32-bit MCU with 60 MHz, 128 KB Flash, CLA  C2000 real-time control MCUs  Sample & Buy View Design Kits & Evaluation Modules
TPS795  Ultralow-Noise, High-PSRR, Fast, RF, 500-mA Low-Dropout Linear Regulators  Power management  Sample & Buy View Design Kits & Evaluation Modules
UCC27211  120V Boot, 4A Peak, High Frequency High-Side Low-Side Driver  Gate Drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC27324  Dual 4 A Peak High Speed Low-Side Power MOSFET Drivers  Gate Drivers  Sample & Buy View Design Kits & Evaluation Modules
UCC27531  2.5-A, 5-A, 35-VMAX VDD FET and IGBT Single Gate Driver  Gate Drivers  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
ISO7240C Download Download
ISO7420 Download Download
LM317 (KC) | 3 Download -
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(KTE) | 3 Download -
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OPA2171 Download Download
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PTH08080W Download -
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TL431A Download Download
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TMS320F28035 Download Download
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TPS795 Download
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UCC27211 Download Download
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UCC27324 Download Download
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UCC27531 Download Download
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Technical Documents

View the Important Notice for TI Designs covering authorized use, intellectual property matters and disclaimers.

User guides (2)
Title Abstract Type Size (KB) Date Views
PDF 2631 09 Jun 2017 371
PDF 2014 08 Sep 2014 81
Design files (3)
Title Abstract Type Size (KB) Date Views
ZIP 2907 16 Mar 2017 160
PDF 317 16 Mar 2017 72
PDF 540 16 Mar 2017 217

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