Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET

Yu Fu; Masatsugu Takemoto; Satoshi Ogasawra; Koji Orikawa

doi:10.1109/ECCE.2018.8557396

Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET

Yu Fu
, Masatsugu Takemoto
, Satoshi Ogasawra
, Koji Orikawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

12 Citations (Scopus)

Abstract

This paper introduces the operational characteristics of an ultra-high-speed bearingless motor with 2-pole concentrated motor windings and 4-pole concentrated suspension windings. Experiments with a prototype machine indicate that iron loss is the largest component of losses in the proposed bearingless motor. Therefore, in order to reduce the iron loss, comparison of the experimental results and the 3D-FEM results is discussed. As a result, because it is turned out that iron loss of the switching frequency component accounts for a large proportion in total iron loss, a method of enhancing efficiency of the proposed bearingless motor by means of high switching frequency using SiC-MOSFET is examined. The experimental results with the examined method show that the prototype machine can attain the high efficiency of 94.3% at rated operation of 1.70 kW and 100,000 r/min in spite of including suspension input power for magnetic levitation. In addition, operational characteristics comparison of the bearingless motor at switching frequency of 40 kHz, 80 kHz and 120 kHz is discussed in detail.

Original language	English
Title of host publication	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	2306-2313
Number of pages	8
ISBN (Electronic)	9781479973118
DOIs	https://doi.org/10.1109/ECCE.2018.8557396
Publication status	Published - Dec 3 2018
Externally published	Yes
Event	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: Sept 23 2018 → Sept 27 2018

Publication series

Name	2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018

Other

Other	10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018
Country/Territory	United States
City	Portland
Period	9/23/18 → 9/27/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Bearingless motor
Magnetic levitation
Magnetic suspension
SiC-MOSFET
Ultra-high-speed

ASJC Scopus subject areas

Energy Engineering and Power Technology
Renewable Energy, Sustainability and the Environment
Control and Optimization
Computer Networks and Communications
Hardware and Architecture
Information Systems and Management

Access to Document

10.1109/ECCE.2018.8557396

Cite this

Fu, Y., Takemoto, M., Ogasawra, S., & Orikawa, K. (2018). Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 (pp. 2306-2313). Article 8557396 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ECCE.2018.8557396

Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET. / Fu, Yu; Takemoto, Masatsugu; Ogasawra, Satoshi et al.
2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 2306-2313 8557396 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Fu, Y, Takemoto, M, Ogasawra, S & Orikawa, K 2018, Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET. in 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018., 8557396, 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018, Institute of Electrical and Electronics Engineers Inc., pp. 2306-2313, 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018, Portland, United States, 9/23/18. https://doi.org/10.1109/ECCE.2018.8557396

Fu Y, Takemoto M, Ogasawra S, Orikawa K. Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET. In 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc. 2018. p. 2306-2313. 8557396. (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018). doi: 10.1109/ECCE.2018.8557396

Fu, Yu ; Takemoto, Masatsugu ; Ogasawra, Satoshi et al. / Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET. 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018. Institute of Electrical and Electronics Engineers Inc., 2018. pp. 2306-2313 (2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018).

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abstract = "This paper introduces the operational characteristics of an ultra-high-speed bearingless motor with 2-pole concentrated motor windings and 4-pole concentrated suspension windings. Experiments with a prototype machine indicate that iron loss is the largest component of losses in the proposed bearingless motor. Therefore, in order to reduce the iron loss, comparison of the experimental results and the 3D-FEM results is discussed. As a result, because it is turned out that iron loss of the switching frequency component accounts for a large proportion in total iron loss, a method of enhancing efficiency of the proposed bearingless motor by means of high switching frequency using SiC-MOSFET is examined. The experimental results with the examined method show that the prototype machine can attain the high efficiency of 94.3\% at rated operation of 1.70 kW and 100,000 r/min in spite of including suspension input power for magnetic levitation. In addition, operational characteristics comparison of the bearingless motor at switching frequency of 40 kHz, 80 kHz and 120 kHz is discussed in detail.",

keywords = "Bearingless motor, Magnetic levitation, Magnetic suspension, SiC-MOSFET, Ultra-high-speed",

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AB - This paper introduces the operational characteristics of an ultra-high-speed bearingless motor with 2-pole concentrated motor windings and 4-pole concentrated suspension windings. Experiments with a prototype machine indicate that iron loss is the largest component of losses in the proposed bearingless motor. Therefore, in order to reduce the iron loss, comparison of the experimental results and the 3D-FEM results is discussed. As a result, because it is turned out that iron loss of the switching frequency component accounts for a large proportion in total iron loss, a method of enhancing efficiency of the proposed bearingless motor by means of high switching frequency using SiC-MOSFET is examined. The experimental results with the examined method show that the prototype machine can attain the high efficiency of 94.3% at rated operation of 1.70 kW and 100,000 r/min in spite of including suspension input power for magnetic levitation. In addition, operational characteristics comparison of the bearingless motor at switching frequency of 40 kHz, 80 kHz and 120 kHz is discussed in detail.

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Investigation of Efficiency Enhancement of an Ultra-High-Speed Bearingless Motor at 100,000 r/min by High Switching Frequency Using SiC-MOSFET

Abstract

Publication series

Other

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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