Kang, Jun-Kyu, Hong-Sik Lim, and Ki-Chan Kim. “A Study on Field Current Ripple Reduction of Wound Field Synchronous Motor for EVs”. International Journal of Engineering & Technology 7, no. 3.24 (August 10, 2018): 655–657. Accessed May 5, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/22835.