Compensation technique for optimized efficiency and voltage controllability of IPT systems

Inductive power transfer (IPT) is an emerging technology that may open up new possibilities for power charging applications. However, the rather complex control method and low efficiency remain the key obstructing factors for general deployment. In a regularly compensated IPT circuit, high efficiency and controllability of the voltage transfer function are always conflicting requirements under varying load conditions. In this paper, the relationships among compensation parameters, circuit efficiency and voltage transfer function are studied. A new compensation method is proposed to achieve a better overall efficiency and good output voltage controllability. The analysis is supported by experimental results.

[1]  Bo-Hyung Cho,et al.  An energy transmission system for an artificial heart using leakage inductance compensation of transcutaneous transformer , 1996 .

[2]  José Francisco Sanz Osorio,et al.  Optimal Design of ICPT Systems Applied to Electric Vehicle Battery Charge , 2009, IEEE Transactions on Industrial Electronics.

[3]  J.A. Cobos,et al.  Design issues of a core-less transformer for a contact-less application , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[4]  Sungwoo Lee,et al.  On-Line Electric Vehicle using inductive power transfer system , 2010, 2010 IEEE Energy Conversion Congress and Exposition.

[5]  Milan M. Jovanovic,et al.  A contactless electrical energy transmission system for portable-telephone battery chargers , 2003, IEEE Trans. Ind. Electron..

[6]  G. Covic,et al.  A New Concept: Asymmetrical Pick-Ups for Inductively Coupled Power Transfer Monorail Systems , 2006, IEEE Transactions on Magnetics.

[7]  Xun Liu,et al.  Equivalent Circuit Modeling of a Multilayer Planar Winding Array Structure for Use in a Universal Contactless Battery Charging Platform , 2005, IEEE Transactions on Power Electronics.

[8]  Grant Covic,et al.  Power transfer capability and bifurcation phenomena of loosely coupled inductive power transfer systems , 2004, IEEE Transactions on Industrial Electronics.

[9]  Andrew D. Brown,et al.  A contactless electrical energy transmission system , 1999, IEEE Trans. Ind. Electron..

[10]  Grant Covic,et al.  Design considerations for a contactless electric vehicle battery charger , 2005, IEEE Transactions on Industrial Electronics.

[11]  Grant Covic,et al.  A Three-Phase Inductive Power Transfer System for Roadway-Powered Vehicles , 2007, IEEE Transactions on Industrial Electronics.

[12]  T. Sato,et al.  Examination of circuit parameters for stable high efficiency TETS for artificial hearts , 2005, IEEE Transactions on Magnetics.

[13]  Xinbo Ruan,et al.  Analysis, Design, and Control of a Transcutaneous Power Regulator for Artificial Hearts , 2009, IEEE Transactions on Biomedical Circuits and Systems.