BR 3PH
Three-phase bridge rectifier
A three-phase bridge rectifier converts a documented three-phase AC input into a DC output.
Schematic
Symbols · AFE
Active front-end rectifier
An actively switched AC/DC stage using a documented current-control and DC-link regulation arrangement.
Schematic / SLD · AFE
What it represents
An actively switched AC/DC stage using a documented current-control and DC-link regulation arrangement.
On a schematic, identify the AC connection, coupling inductors/filter and active switching bridge and trace the DC-link energy path and front-end control interfaces. Keep the component tag and signal/reference names consistent across the control drawing, terminal schedule and device documentation.
An AFE differs from a passive diode bridge; bidirectional operation and power-factor behaviour depend on the actual system/control implementation.
The preview is a conceptual topology reference rather than a complete power-stage circuit. Switching sequences, magnetic design, component selection and control/protection details belong in the equipment design documentation.
How to read it
- Identify the AC connection, coupling inductors/filter and active switching bridge.
- Trace the DC-link energy path and front-end control interfaces.
Information to show or reference
- Label the AC connection, coupling inductors/filter and active switching bridge.
- Cross-reference the DC-link energy path and front-end control interfaces.
- Add the selected device or circuit documentation revision, power/reference connections and project signal convention.
A distinction that matters
An AFE differs from a passive diode bridge; bidirectional operation and power-factor behaviour depend on the actual system/control implementation.
Sources you can follow
These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.
Bidirectional three-/single-phase AC/DC PFC and inverter application note
Public primary manufacturer documentation establishes the component function or circuit/topology relationship. Preview geometry and drafting explanations are independently authored.
About this graphic
This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.
SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.
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