Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

DFIG

Symbols

Doubly-fed induction generator

A doubly-fed induction generator has its stator connected directly to the turbine transformer while the rotor windings, reached through slip rings, connect to a back-to-back AC/DC/AC converter. The converter injects rotor currents at slip frequency, allowing variable speed of roughly plus or minus thirty per cent around synchronous speed and independent control of active and reactive power.

Drawing use: SLD / Schematic
Application: Microgrid systems
Reference family: IEC / IEEE / ANSI

A distinction that matters

A DFIG converter handles only rotor slip power; a full-converter turbine passes all generator output through the converter.

Full reference

M WR

Symbols

Wound-rotor induction motor

A wound-rotor induction motor includes a rotor winding arrangement with documented external connections. The schematic must identify the rotor circuit and any connected starting or control equipment.

Drawing use: SLD / Schematic
Application: Power distribution
Reference family: IEC / Manufacturer

A distinction that matters

A wound-rotor motor has an accessible rotor circuit unlike an ordinary cage-rotor representation.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.