DocumentCode :
3509143
Title :
Asymmetrical Voltage-Cancellation control for LCL resonant converters in Inductive Power Transfer systems
Author :
Sharp, Bryan ; Wu, Hunter
Author_Institution :
Energy Dynamics Lab., USURF, Logan, UT, USA
fYear :
2012
fDate :
5-9 Feb. 2012
Firstpage :
661
Lastpage :
666
Abstract :
This paper presents the first conceptual description of a fixed frequency soft switched LCL load-resonant converter for Inductive Power Transfer (IPT) systems. By using Asymmetric Voltage Cancellation (AVC) control to avoid diode reverse recovery loss (DRRL), ZVS operation over a wide load range becomes possible. The circuit was solved using a time domain analysis method and the optimal control trajectory was determined using a greedy salesperson algorithm. Experiments on a 60W prototype were carried out to validate the regions for which DRRL is avoided and were used to compare the improved performance against previous fixed frequency control strategies. It has been shown that the efficiency can be improved up to 5% and the THD can be reduced up to a factor of 7 compared to phase shift and Asymmetric Duty Cycle control, respectively.
Keywords :
frequency control; inductive power transmission; power system control; resonant power convertors; zero voltage switching; LCL resonant converters; ZVS operation; asymmetric duty cycle control; asymmetrical voltage-cancellation control; diode reverse recovery loss; fixed frequency control strategies; fixed frequency soft switched LCL load-resonant converter; greedy salesperson algorithm; inductive power transfer systems; optimal control trajectory; phase shift; power 60 W; time domain analysis method; Automatic voltage control; Frequency control; Static VAr compensators; Switches; Trajectory; Zero voltage switching; Asymmetric Voltage Cancellation; Inductive Power Transfer; LCL Load-resonant Converters; Soft Switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4577-1215-9
Electronic_ISBN :
978-1-4577-1214-2
Type :
conf
DOI :
10.1109/APEC.2012.6165889
Filename :
6165889
Link To Document :
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