Analytical Design of a Hybrid-Excited Wound Field Synchronous Machine for the Improvement of Torque Characteristics

This paper proposed a novel hybrid-excited wound field synchronous machine (HE-WFSM) to efficiently use the field torque and reluctance torque. Meanwhile, an analytical method is utilized to achieve the torque-angle consistency principle, which allows the field torque and the reluctance torque to re...

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Bibliographic Details
Published in:IEEE access 2020, Vol.8, p.87414-87421
Main Authors: Chai, Wenping, Kwon, Jung-Woo, Kwon, Byung-Il
Format: Article
Language:English
Subjects:
Air gaps
Circuit design
Coils (windings)
Consistency
Equivalent circuits
field torque
Finite element method
hybrid excitation
Magnetic circuits
Magnetic flux
Mathematical analysis
Phase current
Reluctance
reluctance torque
Rotors
Stator windings
Synchronous machines
Torque
Windings
Wound field synchronous machine
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Summary:This paper proposed a novel hybrid-excited wound field synchronous machine (HE-WFSM) to efficiently use the field torque and reluctance torque. Meanwhile, an analytical method is utilized to achieve the torque-angle consistency principle, which allows the field torque and the reluctance torque to reach their maximum values at the same phase current angle. First, a novel HE-WFSM with two different rotor excitations is proposed. Second, the PMs and the field windings in the rotor are designed by an analytical method based on the magnetic equivalent circuit (MEC) to produce the same magnetic flux in the air gap to obtain the torque-angle consistency. Third, one practical HE-WFSM applied for a small power fan is designed by the analytical method as an example. Finally, all the performances of the proposed HE-WFSM are predicted by the finite element method (FEM), thereby verifying the improved torque characteristics.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2020.2993317