SBOA624 March   2025 TMCS1123 , TMCS1126 , TMCS1127 , TMCS1133

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Solar Application Scenarios with Hall-effect Current Sensing
    1. 2.1 String Inverter
      1. 2.1.1 String Current Sampling
      2. 2.1.2 Arc Current Detection (Optional)
      3. 2.1.3 MPPT Boost Current Sampling
      4. 2.1.4 3-Phase Current Sampling
    2. 2.2 Single-Phase Residential Inverter
    3. 2.3 3-Phase Hybrid Inverter
      1. 2.3.1 BDC Current Sampling
      2. 2.3.2 Off-Grid EPS 3-Phase Current Sampling
      3. 2.3.3 Neutral Current Sampling for Midpoint Potential Balancing
    4. 2.4 Split-Phase Hybrid Inverter
    5. 2.5 Micro Inverter
    6. 2.6 Solar Power Optimizer
    7. 2.7 Smart Combiner Box of Central Inverter
    8. 2.8 Summary of Solar Inverter System and In-package Hall-effect Current Sensor
  6. 3Summary
  7. 4References

2.7 Smart Combiner Box of Central Inverter

Smart Combiner Box (also called PV Stream Box, PVS) is used together with central inverter in middle to large-scale PV grid-connected power generation systems. PVS added between the PV strings and inverter for the purpose of reduction of connection lines between PV strings and inverters, easier maintenance and higher reliability. The smart combiner box usually supports 16/18/20/24/32 channels based on the central inverter size, and all PV strings current are sampled in the box. Figure 2-12 shows the smart combiner box application scenario with hall-effect current sensors. Like the string current sampling described in string inverter section, current monitoring function of smart combiner box also needs high accuracy to achieve high failure diagnosis accuracy and power generation efficiency.

Smart Combiner Box Application Scenario With Hall-effect Current Sensors Figure 2-12 Smart Combiner Box Application Scenario With Hall-effect Current Sensors