DC Link Capacitor Reduction with Feedforward Control in Series-Series Compensated Wireless Power Transfer Systems

Conference · Sun Mar 01 00:00:00 EST 2020

DOI:https://doi.org/10.1109/APEC39645.2020.9124336· OSTI ID:1649406

Mukherjee, Subho  ^[1]; Galigekere, Veda Prakash  ^[1]; Onar, Omer  ^[1]; Ozpineci, Burak  ^[1]

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1. ORNL

This paper presents the use of feedforward control to reduce the input side DC link capacitance of series-series compensated wireless power transfer (WPT) systems. Compared to conventional control schemes for WPT systems, the proposed feedforward-based approach achieves significant reduction in the DC link capacitor without any complicated voltage or current sensing requirements from the secondary side. This results in more compact hardware architecture. The proposed method shows minimal increase in the turn-on switching loss of the inverter. The switching loss is analyzed, and detailed results are presented relating the switching loss to the DC link capacitance and voltage ripple for proper tradeoff between losses and capacitor size. Simulation and experimental results presented validate the proposed scheme.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1649406
• Resource Relation: Conference: 2020 Applied Power Electronics Conference and Exposition (APEC) - New Orleans, Louisiana, United States of America - 3/15/2020 4:00:00 PM-3/19/2020 4:00:00 PM
• Country of Publication: United States
• Language: English