Design and analysis of 5 kw class tubular type linear generator for free-piston engine

Article type: Research Article

Authors: Lim, Jaewon^{a; *} | Hong, Sun-Ki^b | Jung, Hyun-Kyo^c

Affiliations: [a] Department of Electrical Engineering, Seoul National University, Seoul, Korea | [b] Department of Electrical Engineering, Hoseo University, Chungcheongnam-do, Korea | [c] Department of Electrical Engineering, Seoul National University, Chungcheongnam-do, Korea

Correspondence: [*] Corresponding author: Department of Electrical Engineering, Seoul National University, Seoul, Korea. Tel./Fax: +82 2 880 7262; E-mail: [email protected]

Abstract: This paper presents the development of a 5kw class tubular type linear generator. The two main characteristics of the generator, the back EMF and the cogging force, are calculated using the finite element method. To reduce the cogging force, the pole pitch modulation method and dummy teeth are adopted. The designed machine is simulated and manufactured for verification.

Keywords: Cogging force, free-piston engine, linear generator, tubular linear machine

DOI: 10.3233/JAE-2011-1334

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 35, no. 4, pp. 231-240, 2011