A Sensorless Coil Detection Scheme based on Dead-Time Effect in Dynamic Wireless Power Transfer Systems

Conference · Thu Oct 01 00:00:00 EDT 2020

DOI:https://doi.org/10.1109/ECCE44975.2020.9235368· OSTI ID:1706233

Kavimandan, Utkarsh  ^[1]; Galigekere, Veda Prakash  ^[1]; Ozpineci, Burak  ^[1]; Pries, Jason  ^[1]; Onar, Omer  ^[1]; Mahajan, Satish M. ^[2]

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1. ORNL
2. Tennessee Technological University, Cookeville TN

The detection of electric vehicles in dynamic wireless power transfer (DWPT) systems is important to reduce the standby losses and comply with the electromagnetic-field emission guidelines recommended by the International Commission for Non-Ionizing Radiation Protection. This paper discusses a novel sensorless coil detection scheme, which exploits the phenomenon of voltage-polarity reversal/notches caused by the dead-time effect in the full-bridge inverter. The variations in the system impedance and dead-time effects are collectively exploited to detect the receiver coil in the DWPT system. The proposed coil detection scheme is accomplished at low excitation voltage, which reduces the inverter standby losses. The theoretical analysis of the notch occurrence and open-loop simulation results are presented using a DWPT model developed in the piecewise linear electrical circuit simulation software.

• 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: 1706233
• Resource Relation: Conference: IEEE Energy Conversion Congress and Exposition (ECCE) - Detroit, Michigan, United States of America - 10/11/2020 8:00:00 AM-10/15/2020 8:00:00 AM
• Country of Publication: United States
• Language: English