Torque ripple minimization in a BLDC motor using an improved voltage control method

Issue title: Selected Papers from the 14th International Symposium on Applied Electromagnetics and Mechanics (ISEM 2009), Part I

Article type: Research Article

Authors: Jang, Jin-Soek^a | Kim, Ho-Hyun^a | Kim, Byung-Taek^{a; *}

Affiliations: [a] Department of Electrical Eng. Kunsan National University, Gunsan, Jeollabuk-do 573-701, South Korea

Correspondence: [*] Corresponding author. Tel.: +82 63 468 9168; Fax: +82 63 469 4699; E-mail: btkim@kunsan.ac.kr

Abstract: This paper proposes a method to reduce the torque ripple of a square wave voltage-driven BLDC motor. First of all, this paper reviews a previous voltage control method to reduce torque ripple, and shows that cogging torque component still remains. Then this paper proposes an improved voltage control method to offset cogging torque. To verify the proposed method, FE-analysis is performed for a test BLDC motor and it is shown that torque ripple is considerably reduced comparing with a previous control.

Keywords: BLDC motor, cogging torque, commutation, torque ripple, voltage control method

DOI: 10.3233/JAE-2010-1118

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 33, no. 1-2, pp. 235-241, 2010