Job Description

Technology Engineering and Manufacturing of Rectifier Thyristor

  • Rectifier duty transformers (multi-pulse, phase-shifting, K-factor considerations)
  • Thyristor/IGBT-based rectifier systems
  • Design cooling systems, insulation class, losses, impedance, and protection schemes.
  • Supervise factory acceptance tests (FAT) and site acceptance tests (SAT).
  • Testing and commissioning and synchronization with grid/plant electrical systems.

    • 2. Harmonic Management & Power Quality

  • Analysed harmonic distortion generated by rectifier loads.
  • Design/review harmonic mitigation strategies:
  • Passive harmonic filters (tuned, detuned)
  • Active harmonic filters (AHF)
  • Ensure compliance with IEEE-519 / IEC harmonic limits.
  • Monitor power quality parameters during operation and recommend corrective actions.

    • 3. APFC & Reactive Power Control

  • Design and review APFC systems to maintain target power factor.
  • Ensure coordination between APFC panels and harmonic filters.
  • Optimize capacitor bank ratings, detuning reactors, and control logic.
  • Troubleshoot frequent tripping, capacitor failures, and resonance issues.

    • 4. Power System Engineering & Design

  • Review and validate electrical designs related to:
  • Power transformers (step-down, isolation, rectifier duty transformers)
  • Rectifier units for electrolysers (AC–DC conversion)
  • Harmonic filters (passive/active)
  • APFC (Automatic Power Factor Correction) panels
  • Ensure compliance with applicable standards (IEC, IEEE, IS, utility/grid codes).
  • Perform load calculations, short-circuit studies, harmonic analysis, and power quality studies.
  • Coordinate with OEMs, EPC contractors, and consultants during design finalization.

    • 5. Commissioning & Start-up Support

    Lead electrical commissioning activities for:

  • Transformers
  • Rectifier units
  • AHF units
  • APFC units
  • HT & LT packages

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