@article{chai_kwon_kwon_2020, 
  title={Analytical Design of a Hybrid-excited Wound Field Synchronous Machine for the Improvement of Torque Characteristics}, 
  DOI={10.1109/access.2020.2993317}, 
  publisher={Institute of Electrical and Electronics Engineers (IEEE)}, 
  author={Chai, Wenping and Kwon, Jung-woo and Kwon, Byung-il}, 
  year={2020}
  }