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

Issue title: 20th International Symposium on Applied Electromagnetics and Mechanics

Guest editors: Theodoros Theodoulidis, Christos Antonopoulos, Nikolaos Kantartzis, Ioannis Rekanos and Theodoros Zygiridis

Article type: Research Article

Authors: Morishita, Naoki^a; | Funaki, Michiro^a | Kikuchi, Yoshimi^a | Wakiwaka, Hiroyuki^a | Sonehara, Makoto^a | Sato, Toshiro^a

Affiliations: [a] Aircraft System Division, Shinshu University, Nagano, Japan

Correspondence: [*] Corresponding author: Naoki Morishita, Aircraft System Division, Shinshu University, 3349-1 Zakoji, Iida, Nagano Prefecture, 3950001, Japan. E-mail: 22w2110j@shinshu-u.ac.jp

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

DOI: 10.3233/JAE-220184

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 71, no. S1, pp. S383-S392, 2023