Squirrel Cage Rotor Design and Manufacturing for High-Speed Applications

Squirrel Cage Rotor Design and Manufacturing for High-Speed Applications

WoS Article

A high-speed squirrel-cage induction machine requires a totally different design compared to the traditional squirrel-cage industrial motor because of the mechanical limitations caused by the high speed. This results in a more complicated rotor construction and expensive material selection, and sets higher standards for the manufacturing precision. The objective of this paper is to demonstrate the design aspects, material selection, and manufacturing of a squirrel-cage rotor for high-speed applications. In this paper, the rotor dimensioning approach based on equations and data analysis is presented. Rotor material selection and construction topology influence on the electrical machine design are discussed. The results are illustrated with the design of a 6-kW, 120 000-r/min induction machine for a turbo circulator. The influence of rotor parameters on the electromagnetic performance of the designed machine is demonstrated. Mechanical stresses for different topologies are studied with finite-element method analysis. Several manufacturing methods for producing a high-precision rotor are described and compared. The presented rotor design approach, which enables high electromagnetic performance and robust construction, is verified by the testing of a prototype.

A high-speed squirrel-cage induction machine requires a totally different design compared to the traditional squirrel-cage industrial motor because of the mechanical limitations caused by the high speed. This results in a more complicated rotor construction and expensive material selection, and sets higher standards for the manufacturing precision. The objective of this paper is to demonstrate the design aspects, material selection, and manufacturing of a squirrel-cage rotor for high-speed applications. In this paper, the rotor dimensioning approach based on equations and data analysis is presented. Rotor material selection and construction topology influence on the electrical machine design are discussed. The results are illustrated with the design of a 6-kW, 120 000-r/min induction machine for a turbo circulator. The influence of rotor parameters on the electromagnetic performance of the designed machine is demonstrated. Mechanical stresses for different topologies are studied with finite-element method analysis. Several manufacturing methods for producing a high-precision rotor are described and compared. The presented rotor design approach, which enables high electromagnetic performance and robust construction, is verified by the testing of a prototype.

AC machine, High-speed drive, Induction motor, Electrical design, Mechanical design, Manufacturing

AC machine, High-speed drive, Induction motor, Electrical design, Mechanical design, Manufacturing

BÁRTA, J.; UZHEGOV, N.; LOŠÁK, P.; ONDRŮŠEK, Č.; MACH, M.; PYRHÖNEN, J.

2020

02.09.2019

IEEE

0278-0046

IEEE Transactions on Industrial Electronics

66

9

United States of America

6768

6778

11

https://ieeexplore.ieee.org/document/8526529

http://hdl.handle.net/

150878_UVEE_SquirrelCageRoto_all