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  • Insulation Resistance Detection Designs in GESS-BMS

    • SLUAB06 January   2025 AMC131M02 , AMC3330 , ISO7731

       

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  • Insulation Resistance Detection Designs in GESS-BMS
  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2Topologies for Insulation Monitoring in ESS
    1. 2.1 Single Switch Topology
      1. 2.1.1 Test Steps
    2. 2.2 Dual Switch Floating Sampling Topology
      1. 2.2.1 Test Steps
    3. 2.3 Dual Switch Sampling in High Voltage Side Topology
    4. 2.4 AC Injection Topology
  6. 3Comparison of Designs
    1. 3.1 Injection Resistance Influence on Accuracy
  7. 4Capacitor Influence on Sampling Time
    1. 4.1 How to Choose Y Capacitor
    2. 4.2 Sampling Time
  8. 5Key Devices
    1. 5.1 BQ79731-Q1
    2. 5.2 UCC33421-Q1
    3. 5.3 AMC131M02
    4. 5.4 AMC3330
    5. 5.5 ISO773x
  9. 6Topos Simulation Result and Conclusion
  10. 7Summary
  11. 8References
  12. IMPORTANT NOTICE
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Application Note

Insulation Resistance Detection Designs in GESS-BMS

Abstract

This application note summarizes the design requirements in the high voltage 1500V system according to the existing energy storage regulations, analyzes the current mainstream bridge insulation monitoring topology, compares the accuracy, cost and monitoring time in multiple dimensions, summarizes three designs. Simulates the three designs sampling time, and conducts experimental verification for accuracy of the low-cost design.

 

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