Novel Self-Excited Brush-Less Wound Field Vernier Machine Topologyopen access
- Authors
- Bukhari, Syed Sabir Hussain; Ikram, Junaid; Wang, Fengxiang; Yu, Xinhong; Imtiaz, Junaid; Rodas, Jorge; Ro, Jong-Suk
- Issue Date
- Sep-2022
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Windings; Topology; Rotors; Harmonic analysis; Stator windings; Rectifiers; Costs; Voltage source inverters; Finite element analysis; Wound field vernier machine; harmonic field excitation; self-excited machines; wound rotor
- Citation
- IEEE ACCESS, v.10, pp 97868 - 97878
- Pages
- 11
- Journal Title
- IEEE ACCESS
- Volume
- 10
- Start Page
- 97868
- End Page
- 97878
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/67477
- DOI
- 10.1109/ACCESS.2022.3206381
- ISSN
- 2169-3536
- Abstract
- To realize the brush-less operation for wound field vernier machines (WFVMs), a novel self-excited topology is proposed in this paper which involves a four-pole main armature winding and a two-pole excitation winding connected in series using an uncontrolled rectifier. Upon supplying current from a single current-controlled voltage source inverter (VSI), this procedure results in four-pole and two-pole magnetomotive force (MMF) components in the airgap. The four-pole MMF produces the main stator field while the two-pole MMF component develops a sub-harmonic field in the airgap. The rotor is altered to house a forty-four-pole rotor field and two-pole harmonic windings. The two-pole harmonic field is employed to induce a current in the harmonic winding, which is rectified by means of a full-bridge diode rectifier to energize the rotor field winding and realize brush-less operation for WFVM. Two-dimensional finite element analysis (2-D FEA) is implemented in JMAG-Designer to confirm the operation of the proposed WFVM topology and attain the electromagnetic performance for a four-pole, twenty-four-slot outer-rotor vernier machine.
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