A Permanent Magnet Brushless Doubly-Fed Electric Machine for Variable-Speed Constant-Frequency Wind Turbines
Journal article, 2023

A permanent magnet brushless doubly-fed electric machine is presented in this paper. This machine is developed for variable-speed constant-frequency wind energy generation applications. Differing from conventional doubly-fed electric machines based on induction machines, a permanent magnet rotor provides the magnetic field excitations for both the control winding and the power winding in the presented machine. The operating principle of the presented machine for the variable-speed constant-frequency operation is revealed in detail. Compared to a counterpart machine, the presented machine exhibits significantly improved back- electromotive force, torque/power density, torque per magnet volume, efficiency, etc. Finally, a proof-of-concept prototype of the presented machine is fabricated, and the corresponding experimental results are provided to verify the fact that the presented machine is capable of achieving the variable-speed constant-frequency function.

Stator windings

wind energy generation

Rotors

permanent magnet brushless doubly-fed machine

Wind energy generation

variable-speed constant-frequency

Flux-modulation

Windings

Converters

Power conversion

Shafts

Author

Hao Chen

Chalmers, Electrical Engineering, Electric Power Engineering

Ayman El-Refaie

Marquette University

Yuefei Zuo

School of Electrical and Electronic Engineering

Shun Cai

School of Electrical and Electronic Engineering

Junfei Tang

Chalmers, Electrical Engineering, Electric Power Engineering

Yujing Liu

Chalmers, Electrical Engineering, Electric Power Engineering

Christopher H.T. Lee

School of Electrical and Electronic Engineering

IEEE Transactions on Industrial Electronics

0278-0046 (ISSN) 15579948 (eISSN)

Vol. 70 7 6663-6674

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/TIE.2022.3201306

More information

Latest update

3/15/2023