The effect of armature offset for the reduction of end cogging force

Article type: Research Article

Authors: Park, Eui-Jong^a | Suzuki, Kenji^b | Kim, Yong-Jae^{a; *}

Affiliations: [a] Department of Electrical Engineering, Chosun University, Gwangju, Korea | [b] Department of Electrical and Electronic Engineering, Tokyo City University, Tokyo, Japan

Correspondence: [*] Corresponding author: Yong-Jae Kim, Department of Electrical Engineering, Chosun University, Gwangju 501-759, Korea. E-mail:kimyj21@chosun.ac.kr

Abstract: Along with the increased interest in high-load transport system, the linear motor has evolved from the conventional single-sided model to a double-sided model with armatures on both sides of the mover. However, the linear motor generally has armatures installed on the full length of the transport path, resulting in the increase in material costs and manufacturing time and thus limiting the application of this double-sided linear motor to long-distance transport systems. As a means to solve this problem, in this study, we propose a stationary discontinuous armature system and solve its problem which increasing the cogging force by ends between armatures.

Keywords: Double-sided PMLSM, discontinuous armature, armature offset, end cogging force, ripple, winding method

DOI: 10.3233/JAE-150152

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 50, no. 4, pp. 637-645, 2016