TY - GEN
T1 - Optimal Power Sharing Speed Compensation in On-road Wireless EV Charging Systems
AU - Lewis, Donovin D.
AU - Onar, Omer
AU - Galigekere, Veda Prakash
AU - Mohammad, Mostak
AU - Ionel, Dan M.
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Dynamic wireless charging of electric vehicles (EV) is an emerging technology with the potential to address range anxiety and reduce the size of batteries or provide charge-sustaining operation. Charging demand for dynamic wireless charging systems (DWCS) varies greatly in response to location-specific traffic behaviors including the number and speed of vehicles. This paper highlights the potential reduction of load variation with speed compensation and simulates opportunities to maximize the number of cars charged concurrently through 'power sharing' or altering power output to slower cars while maintaining a maximum delivered energy. An improved sub-minute model for synthetic traffic is proposed to effectively model DWCS load on high speed roadways and a power electronics model is created based on an existing prototype developed by ORNL to investigate the potential for power sharing. Reductions in the average speed of traffic can greatly increase instantaneous DWCS load by as much as 26%, complicating capacity sizing. Parametric studies with a LCC-S power electronics model shows feasible power reduction of more than 20%, while maintaining a maximum achievable efficiency greater than 90%. Speed compensation on a roadway with large speed variation can reduce average power expected by 21% and increase the maximum number of cars charged simultaneously by 30%. The application of power sharing may significantly reduce load variability due to speed, allow for increased car hosting capability, and guarantee a maximum energy delivered.
AB - Dynamic wireless charging of electric vehicles (EV) is an emerging technology with the potential to address range anxiety and reduce the size of batteries or provide charge-sustaining operation. Charging demand for dynamic wireless charging systems (DWCS) varies greatly in response to location-specific traffic behaviors including the number and speed of vehicles. This paper highlights the potential reduction of load variation with speed compensation and simulates opportunities to maximize the number of cars charged concurrently through 'power sharing' or altering power output to slower cars while maintaining a maximum delivered energy. An improved sub-minute model for synthetic traffic is proposed to effectively model DWCS load on high speed roadways and a power electronics model is created based on an existing prototype developed by ORNL to investigate the potential for power sharing. Reductions in the average speed of traffic can greatly increase instantaneous DWCS load by as much as 26%, complicating capacity sizing. Parametric studies with a LCC-S power electronics model shows feasible power reduction of more than 20%, while maintaining a maximum achievable efficiency greater than 90%. Speed compensation on a roadway with large speed variation can reduce average power expected by 21% and increase the maximum number of cars charged simultaneously by 30%. The application of power sharing may significantly reduce load variability due to speed, allow for increased car hosting capability, and guarantee a maximum energy delivered.
KW - Electric vehicle (EV)
KW - power control
KW - sensitivity analysis
KW - wireless charging
KW - wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85168241589&partnerID=8YFLogxK
U2 - 10.1109/ITEC55900.2023.10186946
DO - 10.1109/ITEC55900.2023.10186946
M3 - Conference contribution
AN - SCOPUS:85168241589
T3 - 2023 IEEE Transportation Electrification Conference and Expo, ITEC 2023
BT - 2023 IEEE Transportation Electrification Conference and Expo, ITEC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE Transportation Electrification Conference and Expo, ITEC 2023
Y2 - 21 June 2023 through 23 June 2023
ER -
