Title :
Analysis and Test Results of a Brushless Doubly Fed Induction Machine With Rotary Transformer
Author :
Ruviaro, Maurício ; Rüncos, Fredemar ; Sadowski, Nelson ; Borges, Iduan Machado
fDate :
6/1/2012 12:00:00 AM
Abstract :
This paper analyzes a 90-kW brushless doubly fed three-phase induction machine in which a wound rotor circuit is connected to a rotary transformer. It presents the advantages of substituting brushes and slip rings by a rotary transformer. In addition, it shows the rotary transformer design and presents the doubly fed induction machine operation. The steady-state model considers electrical circuit techniques to provide information about current, power factor, and efficiency on load. Equivalent circuit parameters are obtained through laboratory tests under a prototype. Comparisons between simulation and measurement results attest the good performance of the adopted model.
Keywords :
asynchronous machines; brushless machines; equivalent circuits; rotors; transformers; brushless doubly fed three-phase induction machine; doubly fed induction machine operation; electrical circuit techniques; equivalent circuit parameters; power 90 kW; power factor; rotary transformer; slip rings; steady-state model; wound rotor circuit; AC motors; Brushless machines; Circuit synthesis; Equivalent circuits; Frequency synchronization; Induction machines; Rotors; Stator windings; Torque control; Windings; Alternating current motors; brushless machines; circuit analysis; circuit simulation; equivalent circuits; induction motors; prototype; rotary transformer; rotating machines; test facilities;
Journal_Title :
Industrial Electronics, IEEE Transactions on
DOI :
10.1109/TIE.2011.2165457