NDLI: Modelling and performance analysis on a bearingless fixed-pole rotor induction motor

Content Provider	IET Digital Library
Author	Ye, Xiaoting Yang, Zebin Zhang, Tao
Abstract	Both torque winding magnetic field and suspension force winding magnetic field induce currents in the rotor in conventional bearingless induction motors (BIMs). Owing to the induced currents of suspension force winding, the air gap magnetic field is affected, which results in amplitude and phase error of torque and radial suspension forces. To overcome such drawbacks, a novel BIM with a fixed-pole rotor is proposed, which is called bearingless fixed-pole rotor induction (BFPRI) motor. First, the structure of the BFPRI motor is designed and introduced. Second, the mathematical models of radial suspension forces and torque are deduced. Third, the corresponding electromagnetic characteristics, including induced currents, radial suspension forces, and torque, are investigated and compared with the conventional BIM. Finally, the prototype motor equipped with a fixed-pole rotor is constructed and experimental research is carried out. According to the finite element analysis and experimental results, for the proposed BFPRI motor, only the torque winding magnetic field induces currents in the rotor, which makes the precision of torque and radial suspension forces higher and improves the accuracy of the BIM control system.
Starting Page	251
Ending Page	258
Page Count	8
ISSN	17518660
Volume Number	13
e-ISSN	17518679
Issue Number	Issue 2, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-epa/13/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-epa.2018.5296
Journal	IET Electric Power Applications
Publisher Date	2018-12-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Air Gap Air Gap Magnetic Field Asynchronous Machine BFPRI Motor Control of Electric Power System Conventional Bearingless Induction Motors Finite Element Analysis Fixed-pole Rotor Induction Motor Induced Current Induction Motors Machine Control Machine Windings Magnetic Bearings Magnetic Field Performance Analysis Prototype Motor Radial Suspension Forces Rotors Suspension Force Torque
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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