TI Solar Module Level Detection and Communication Subsystem Solution Reference Design TIDA-00640

TI's TIDA-00640 is a solar module level detection and communication subsystem solution reference design that includes voltage, current and temperature measurements and wireless communication. Voltage measurement error <2%, current measurement error less than 2%, using CC2538 M3 SoC Used as ZigBee communication, PCB-based antenna can simplify the filter circuit. It is mainly used in solar energy monitoring and communication. This paper introduces the main features and main system indicators of the reference design TIDA-00640, function separate diagram, system block diagram and circuit diagram, bill of materials and PCB. design diagram.

This verified reference design provides an overview on how to implement a solar module level monitoring andcommunicaTIon subsystem. This TI Design addresses the key need of a highly cost-optimized monitoring and communication subsystem for solar module levelpower electronics (MLPE). This design showcases ahighly integrated solution for accurate Voltage, current, and temperature monitoring along with ZigBee®communication using the CC2538 to enable solarmodule level monitoring.

Module level power electronics (MLPEs) provide a very granular method of optimizing a solar system. Moving the maximum power point tracking (MPPT) or other power management services to the modulereduces the cost overhead on a system and enables a higher total system power output. However, itremoves some of the capability of monitoring string degradation because every module appears toperform optimally to an outside observer. The addition of integrated power measurement at each MLPEenables several additional features:

• Array performance metrics to evaluate instillation return on investment
• Mesh based power point tracking more efficient power conversion
• Module degradation information due to aging or soiling
• Module mismatch and instillation issue analysis

The TIDA-00640 integrates the voltage, current, and temperature measurement into a single system that is able to be powered by the module itself and the communicating the data back to a central point through a number of wireless standards. This TI Design enables quick integration of the Measurement andwireless technology with MPLEs to make a full distributed power conversion system.

Reference design TIDA-00640 main features:

• <2% Error Voltage Measurement
• <2% Error Current Measurement
• CC2538 M3 SoC for ZigBee Communication
• PCB Based Antenna With Simplified FilteringCircuitry

Reference Design TIDA-00640 Application:

• Solar Energy Monitoring and Communications

Figure 1. Reference design TIDA-00640 outline drawing

Figure 2. Reference Design TIDA-00640 Main Function Profile Reference Design TIDA-00640 Main System Indicators:

Figure 3. Reference Design TIDA-00640 System Block Diagram

Figure 4. Reference Design TIDA-00640 Circuit Diagram Reference Design TIDA-00640 Bill of Materials:

Figure 5. Reference Design TIDA-00640 PCB Design Drawing (1)

Figure 6. Reference Design TIDA-00640 PCB Design (2)

Figure 7. Reference Design TIDA-00640 PCB Design Drawing (3)

Figure 8. Reference Design TIDA-00640 PCB Design Drawing (4)

Figure 9. Reference Design TIDA-00640 PCB Design Drawing (5)

Figure 10. Reference Design TIDA-00640 PCB Design Drawing (6)

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