A basic study on braking and regenerative braking torques for an axial gap type eddy current brake

Abstract

Because of growing demand in the aircraft industry, research is being conducted around the world to reduce CO₂ emissions by electrifying aircraft. The authors are studying a non-contact hybrid aircraft brake that combines an eddy current brake and a magnetorheological fluid brake. This paper presents a basic study of braking and regenerative torque using an axial gap type eddy current brake. The result as that a maximum braking torque of 51.3 mNm was obtained with a three-phase AC power supply when the speed of the conductor disc was 2,000 rpm, the current was 3 A, and the frequency was 10 Hz in the CW direction. The maximum regenerative torque was 48 mNm when the speed of the conductor disc was 2,000 rpm, the current was 3 A, and the frequency was 10 Hz in the CCW direction.

Keywords

Eddy current brake electro-magnetic brake axial gap type motor three-phase AC aircraft

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References

Japan Airlines Public Relations Department: Latest Aviation Practical Handbook, Asahi Shimbun Publishing, 2007, 128–130, 139, 264.

Ceramic Society of Japan. C/C composite brake for aircraft, Ceramics42(12) (2007), 958–960.

Shiga

Nagashima

Kikuchi

Design study of a non-contact hybrid braking system for aircraft, in: IEEJ/Magnetics and Linear Drives Meeting, 2021, pp. 71–75.

Gosline

A.H.C.

and Hayward

, Eddy current brakes for haptic interfaces: design, identification, and control, IEEE/ASME Transactions on Mechatronics13(6) (2008), 669–777.

Sakai

, Electromagnetism, Institute of Electrical Engineers of Japan, Tokyo, 2002, pp. 234–235..

Lubin

and Rezzoug

, 3-D analytical model for axial-flux eddy-current couplings and brakes under steady-state conditions, IEEE Transactions on Magnetics51(10) (2015), 8203712, Electromagnetism and Electromagnetic Devices.

Industry-Academia-Government Wide Area Collaboration Center: Basics of Conductive Materials, Institute for Materials Research, Tohoku University, http://www.trc-center.imr.tohoku.ac.jp/64-Zumen.pdf, Viewed 2022-05-16.

K. Hori, Shinshu University Bachelor thesis, 2020, 28.

Hori

, Brake torque of three-phase AC excited eddy current brakes using Cu/SPCC composite material disc, Journal of the Japan Society of Applied Electron29(2) (2021), 194–195.