Representative imageAC-DC Rectifiers
An AC-DC rectifier converts alternating-current mains supply into a stable direct-current output for industrial DC loads such as DC motor drives, electromagnets, process power, telecom/DC power systems and battery charging.
Overview
An AC-DC rectifier converts alternating-current mains supply into a stable direct-current output for industrial DC loads such as DC motor drives, electromagnets, process power, telecom/DC power systems and battery charging. ACE builds rectifiers around diode or thyristor (SCR) bridge topologies, typically in 6-pulse or 12-pulse configurations, with an integral isolation/converter-grade transformer, smoothing reactor and DC filtering. Diode bridges give a fixed DC output at lowest cost, while phase-controlled thyristor bridges allow the DC voltage/current to be regulated by adjusting the firing angle, enabling closed-loop constant-voltage or constant-current control. Buyers choose ACE's rectifiers for a transformer-plus-power-electronics package engineered to the load, with 12-pulse options and harmonic filtering to cut input current distortion and meet IEEE-519 limits.
Specifications
| Output DC voltage | typ. 12 V to 1000 V DC (application-specific) |
|---|---|
| Output DC current | from a few amperes to several thousand amperes |
| Input | 1-phase or 3-phase, 415 V / 433 V AC (LT) class, 50/60 Hz |
| Topology | diode bridge (uncontrolled) or thyristor/SCR bridge (phase-controlled); 6-pulse or 12-pulse |
| Control | fixed output, or constant-voltage / constant-current regulation via firing-angle (SCR) control |
| Pulse number / harmonics | 12-pulse and harmonic filtering to limit input current THD (IEEE-519) |
| Output ripple | smoothing reactor / DC filter for low ripple |
| Cooling | natural air (AN), forced air (AF) or water-cooled per rating |
| Enclosure | floor-standing cubicle / panel, IP rating to site |
| Standards | IS / IEC 60146 (semiconductor converters), IEEE-519 (harmonics) |
Applications
- DC motor drives and field supplies
- Electromagnets and lifting magnets
- Industrial process / electrolytic DC power
- Telecom and industrial DC power systems
- Battery charging supplies
- General regulated DC supply for plant equipment
Frequently asked questions
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