Funding for this research was provided by:
National Natural Science Foundation of China (51605397)
Sichuan Science and Technology Program (2019YJ0227)
Self-determined Project of State Key Laboratory of Traction Power (2019TPL_T02)
Article History
Received: 14 September 2020
Revised: 13 January 2022
Accepted: 22 March 2022
First Online: 5 April 2022
Competing interests
: The authors declare no competing financial interests.