|align = "center" bgcolor = "#99ccff"|'''Concept1'''
|-
|align = "center"|1Definition
|Doubly fed
|Induction
|Generator
|-
|align = "center"|1
|doubly fed
|induction
|generator
|-
|align = "center"|2
|Double double output|Asynchronousasynchronous|Machinesmachines
|-
|align = "center"|3
|Dual dual fed
|
|Systemssystems
|-
|align = "center"|4
|Dual dual feed
|
|
|-
|align = "center"|5
|Dual dual output
|
|