Representative imageDC Rectifier with Harmonic Filter
This is a high-current AC-to-DC rectifier system with integrated harmonic mitigation, supplying regulated DC for heavy electro-process and high-power conversion loads.
Overview
This is a high-current AC-to-DC rectifier system with integrated harmonic mitigation, supplying regulated DC for heavy electro-process and high-power conversion loads. A plain 6-pulse converter draws strongly distorted input current; ACE integrates multi-pulse rectification (phase-shifting transformer plus 12-, 18-, 24- up to 48-pulse bridges) together with input harmonic filtering and DC-side smoothing to bring line-current THDi down to IEEE-519 limits (~5%) and reduce output ripple. ACE manufactures units up to 15,000 A DC. Buyers select it where they need a large, clean DC source for electrochemical or DC-arc processes and must simultaneously satisfy utility harmonic limits at the point of common coupling — getting rectifier, phase-shift transformer and filter as one engineered package.
Specifications
| DC output current | up to 15,000 A |
|---|---|
| Pulse count | 6 / 12 / 18 / 24 up to 48 pulses for input-harmonic and output-ripple control |
| Input THDi | from >36% (bare 6-pulse) reduced to ~5% per IEEE-519 with multi-pulse + filter |
| Output DC voltage | application-specific (low-voltage high-current for plating/electrolysis up to higher-voltage process buses) |
| Input supply | 3-phase LV/MV, 50/60 Hz, via phase-shifting rectifier transformer |
| Harmonic mitigation | multi-pulse phase-shift transformer + tuned/broadband input filter; DC smoothing reactor for ripple |
| Control | diode (uncontrolled) or thyristor/SCR (controlled, regulated output) |
| Cooling | air-cooled (AN/AF) or water/liquid-cooled for very high currents |
| Construction | bus-duct / water-cooled connections for high DC current; IP21-IP54 enclosures |
| Applicable standards | IEEE-519, IEC 60146 (semiconductor converters), IS 2026 / IEC 60076 (transformer/reactor) |
Applications
- Electroplating and surface-finishing lines
- High-current DC injectors
- Electrolysis / electrowinning processes
- DC arc furnaces
- High-power inverters and converters
- Other high-current DC process loads
Frequently asked questions
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