P2 Power Solutions Pvt. Ltd.

Auto Welding Industries Solution

Auto Welding Industries Solution

Typical Challenges

  • Extremely fast fluctuating load profile iTDD exceeding limits set as per IEEE standard Low PF (both leading and lagging)
  • High load unbalance
  • Increased losses due to high harmonics
  • Failure of welding transformers
  • Tripping of relays, protective circuits etc.


Root Cause Analysis

  • Double phase welding loads are identified as major non-linear Loads
  • Improper reactive compensation in all the



  • P2 Power IGBT based Active Harmonic Filter at major DBs for the purpose of harmonic mitigation, reactive compensation and load balancing



P2 Power Active Filter effectively reduced high harmonic distortion and neutral current at PCC realizing following overall benefits:

  • Current harmonic distortion <8% at welding PCC Relatively balanced load profile Reduced (almost negligible) failure rate
  • Relatively smooth reactive compensation
  • Reduced losses due to simultaneous reduction in harmonic, reactive and negative sequence losses

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