Comparison of high-speed electrical motors for a turbo circulator application

Uzhegov, Nikita; Bárta, Jan; Kurfürst, Jiří; Ondrůšek, Čestmír; Pyrhönen, Juha

doi:10.1109/icelmach.2016.7732601

Cited by 8 publications

(4 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Properties of the retaining sleeve used until this point correspond to Inconel 718, the material available in the benchmark machine on the available laboratory setup. It is widely used for high-speed PM rotors [40,41]. Likewise, stainless steel and titanium are often used for retaining sleeves of small size high-speed PM machines [42,43].…”

Section: Pwm Caused Rotor Eddy Current Losses Under Variations Of Dri...mentioning

confidence: 99%

Performance Analysis of High-Speed Electric Machines Supplied by PWM Inverters Based on the Harmonic Modeling Method

Merdzan

2021

Energies

View full text Add to dashboard Cite

This paper presents a method for the performance analysis of high-speed electric machines supplied with pulse-width modulated voltage source inverters by utilizing a fast analytical model. By applying a strict mathematical procedure, effective expressions for the calculation of rotor eddy current losses and electromagnetic torque are derived. Results obtained by the approach suggested in this study are verified by the finite element model, and it is shown that the proposed method is superior in comparison to the finite element method in terms of computation time. The proposed method enables fast parameter variation analysis, which is demonstrated by changing the inverter switching frequency and electric conductivity of the rotor and analyzing the effects of these changes on rotor eddy current losses. The presented work separately models effects of the permanent magnet and pulse-width modulated stator currents, making it suitable for the analysis of both high-speed permanent magnet machines and high-speed induction machines.

show abstract

Section: Pwm Caused Rotor Eddy Current Losses Under Variations Of Dri...mentioning

confidence: 99%

Performance Analysis of High-Speed Electric Machines Supplied by PWM Inverters Based on the Harmonic Modeling Method

Merdzan

2021

Energies

View full text Add to dashboard Cite

show abstract

“…As a case study, a high-speed induction machine with a squirrel cage rotor was designed for a helium turbo-circulator. The targeted turbo-circulator requires a motor with an output power of 6 kW at 120 000 rpm [37]. This is a challenging application in terms of the speed range and mechanical stresses for a squirrel cage rotor.…”

Section: A Case Study Descriptionmentioning

confidence: 99%

Squirrel-Cage Rotor Design and Manufacturing for High-Speed Applications

Bárta

Uzhegov

Lošák

et al. 2019

IEEE Trans. Ind. Electron.

Self Cite

View full text Add to dashboard Cite

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 rpm induction machine for a turbo-circulator. The rotor parameters' influence on the electromagnetic performance of the designed machine is demonstrated. Mechanical stresses for different topologies are studied with Finite Element Method (FEM) 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.

show abstract

“…However, when operated at high speeds, some characteristic issues need to be considered in the design of HSPMGs, including electromagnetic field distribution, power loss, thermal distribution, rotor stress and rotor dynamics [9–11]. Electromagnetic characteristics should be designed first, such as the induction voltage, load current, power loss and efficiency etc., which are the premise of the analysis of mechanical and temperature characteristics [12, 13]. Nevertheless, some structural parameters have a great influence on the electromagnetic performances, such as the rotor diameter, the PM thickness and the number of conductors per slot [14, 15].…”

Section: Introductionmentioning

confidence: 99%

Multiphysics analysis of high‐speed permanent magnet generators for waste heat application

Huang

2020

IET Electric Power Applications

View full text Add to dashboard Cite

In the direct drive waste heat power system, the turbine is directly connected to high-speed permanent magnet generators (HSPMGs), and the transmission efficiency, service life and system volume can be obviously improved by removing the gearbox and screw rod. However, in the design of high-speed electrical machines, a comprehensive multiphysics analysis must be conducted in order to meet various requirements of electromagnetic, mechanical and thermal specifications simultaneously. The design of one HSPMG by the multiphysics approach for the electromagnetic and loss characteristics, rotor stress, rotor dynamics and fluid-thermal parameters, which satisfies all specified multiphysics constraints, is presented. The theoretical results are confirmed by the experimental results on a prototype in terms of electromagnetic, mechanical and thermal characteristics, such as induced voltage, load current, rotor continuous operation and temperature distribution.

show abstract

Comparison of high-speed electrical motors for a turbo circulator application

Cited by 8 publications

References 16 publications

Performance Analysis of High-Speed Electric Machines Supplied by PWM Inverters Based on the Harmonic Modeling Method

Performance Analysis of High-Speed Electric Machines Supplied by PWM Inverters Based on the Harmonic Modeling Method

Squirrel-Cage Rotor Design and Manufacturing for High-Speed Applications

Multiphysics analysis of high‐speed permanent magnet generators for waste heat application

Contact Info

Product

Resources

About