Secondary Active Rectifier Control Scheme for a Wireless Power Transfer System with Double-Sided LCC Compensation Topology

Conference · Sat Dec 01 00:00:00 EST 2018

DOI:https://doi.org/10.1109/IECON.2018.8592748· OSTI ID:1489576

Zou, Shenli  ^[1]; Onar, Omer  ^[1]; Galigekere, Veda Prakash  ^[1]; Pries, Jason  ^[1]; Su, Gui-Jia  ^[1]; Khaligh, Alireza ^[2]

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1. ORNL
2. University of Maryland, College Park

This paper proposes a secondary control method using an active rectifier for a double-sided LCC tuned wireless power transfer system (WPT) to reduce the communication requirements of the system. As the active rectifier regulates the output power with a constant primary coil current, the secondary circulating time interval is adjusted while maintaining a unity power factor. First, circuit modelling and sensitivity analyses for the voltage gain, input impedance, coil current rating and power transfer are investigated with a design example of 20kW WPT. Subsequently, the control scheme is developed by considering the four operation modes with the phase difference as the control variable. To prove the effectiveness of the proposed control method, a simulation model is built, and the results demonstrate good dynamic performance with high accuracy for voltage regulation. Compared with the conventional secondary control, it improves the performance of the system along with a well-developed converter gain by maintaining the equivalent load resistive and reduced circulating time intervals, which further improves the system efficiency. The proposed system also eliminates the need for an additional de/de converter on the secondary side.

• 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: 1489576
• Resource Relation: Conference: Annual Conference of the IEEE Industial Electronics Society (IECON 2018) - Washington, D.C., District of Columbia, United States of America - 10/21/2018 8:00:00 AM-10/23/2018 8:00:00 AM
• Country of Publication: United States
• Language: English