Improved Control Strategy of Grid Interface for EV High-Power Dynamic Wireless Charging

Conference · Tue Jun 01 00:00:00 EDT 2021

DOI:https://doi.org/10.1109/APEC42165.2021.9487243· OSTI ID:1812270

Zeng, Rong  ^[1]; Galigekere, Veda Prakash  ^[1]; Onar, Omer  ^[1]; Ozpineci, Burak  ^[1]

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1. ORNL

This paper proposes a control strategy for the grid interface converter in high-power dynamic wireless charging system (DWCS) to address two issues on distribution network integration. Due to the unique pulsating load profile of DWCS, load transient response capability is critical for the grid interface to maintain the dc-bus voltage stable. Besides, the inherent unbalanced situation of distribution network would lead to 2nd-order oscillations on the dc-bus voltage, which would further affect the stable operation of the entire system. In this paper, the DWCS model is developed, and the relationship between the dc-bus voltage and the input/output power is analyzed. Based on the developed model, a control strategy based on direct power control is presented. Both simulation results and hardware-in-the-loop (HIL) results demonstrate that the proposed control strategy not only improves load transient response capability, but also eliminates the 2nd-order oscillations on the dc-bus voltage under imbalanced distribution network conditions.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1812270
• Resource Relation: Conference: IEEE Applied Power Electronics Conference and Exposition (APEC) - Phoenix, Arizona, United States of America - 6/9/2021 8:00:00 AM-6/12/2021 8:00:00 AM
• Country of Publication: United States
• Language: English