Demonstrating Dynamic Wireless Charging of an Electric Vehicle - The benefit of Electrochemical Capacitor Smoothing

Journal Article · Wed Jan 01 04:00:00 EST 2014 · IEEE Power Electronics Magazine

DOI:https://doi.org/10.1109/MPEL.2014.2300978· OSTI ID:1127001

Miller, John M. ^[1]; Onar, Omer C ^[2]; White, Cliff P ^[2]; Campbell, Steven L ^[2]; Coomer, Chester ^[2]; Seiber, Larry Eugene ^[2]; Sepe, Raymond B ^[2]; Steyerl, Anton ^[2]

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1. JNJ-Miller PLC
2. ORNL

The wireless charging of an electric vehicle (EV) while it is in motion presents challenges in terms of low-latency communications for roadway coil excitation sequencing and maintenance of lateral alignment, plus the need for power-flow smoothing. This article summarizes the experimental results on power smoothing of in-motion wireless EV charging performed at the Oak Ridge National Laboratory (ORNL) using various combinations of electrochemical capacitors at the grid side and in the vehicle. Electrochemical capacitors of the symmetric carbon carbon type from Maxwell Technologies comprised the in-vehicle smoothing of wireless charging current to the EV battery pack. Electro Standards Laboratories (ESL) fabricated the passive and active parallel lithium-capacitor (LiC) unit used to smooth the grid-side power. The power pulsation reduction was 81% on the grid by the LiC, and 84% on the vehicle for both the LiC and the carbon ultracapacitors (UCs).

• Research Organization: Oak Ridge National Laboratory (ORNL); National Transportation Research Center (NTRC); Power Electronics and Electric Machinery Research Facility
• Sponsoring Organization: ORNL work for others
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1127001
• Journal Information: IEEE Power Electronics Magazine, Journal Name: IEEE Power Electronics Magazine Journal Issue: 1 Vol. 1; ISSN 2329-9207
• Country of Publication: United States
• Language: English

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