Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-27T12:18:44.616Z Has data issue: false hasContentIssue false
  • English
  • Français

Accurate steady-state modeling of capacitive-coupling interface of capacitive power transfer systems with cross-coupling

Published online by Cambridge University Press:  07 March 2016

Liang Huang ,
Aiguo Patrick Hu ,
Akshya K. Swain  and
Yugang Su
Liang Huang*
Affiliation:
Department of Electrical and Computer Engineering, The University of Auckland, Auckland, New Zealand. Phone: +64 22 095 0972
Aiguo Patrick Hu
Affiliation:
Department of Electrical and Computer Engineering, The University of Auckland, Auckland, New Zealand. Phone: +64 22 095 0972
Akshya K. Swain
Affiliation:
Department of Electrical and Computer Engineering, The University of Auckland, Auckland, New Zealand. Phone: +64 22 095 0972
Yugang Su
Affiliation:
College of Automation, Chongqing University, Chongqing, Sichuan, China
*
Corresponding author: L. Huang Email: [email protected]
Get access

Abstract

Capacitive power transfer (CPT) technology can achieve wireless power transfer based on electric field coupling. However, practical CPT systems often have cross-coupling between coupling plates of the capacitive-coupling interface, which makes accurate system analysis and compensation design tedious and complicated. In this paper, an accurate steady-state equivalent circuit model of the capacitive-coupling interface with cross-coupling is established. The model includes a parallel input capacitor linked with a series output capacitor by an ideal transformer whose turns ratio reflects the extent of cross-coupling between the plates. Effects of coupling variation on the model are analyzed in detail. The model is used for primary and secondary tuning design to achieve the maximum power transfer of a CPT system with cross-coupling. The effectiveness of the proposed model is demonstrated by both simulations and experimental results.

Keywords

Capacitive power transferModelingCross-coupling
Type
Research Article
Information
Wireless Power Transfer , Volume 3 , Issue 1 , March 2016 , pp. 53 - 62
Check for updates
Copyright
Copyright © Cambridge University Press 2016 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

[1]Boys, J.T.; Covic, G.A.; Green, A.W.: Stability and control of inductively coupled power transfer systems. IEE Proc. – Electr. Power Appl., 147 (2000), 37–43.CrossRefGoogle Scholar
[2]Chwei-Sen, W.; Stielau, O.H.; Covic, G.A.: Design considerations for a contactless electric vehicle battery charger. IEEE Trans. Ind. Electron., 52 (2005), 1308–1314.Google Scholar
[3]Swain, A.K.; Devarakonda, S.; Madawala, U.K.: Modeling, sensitivity analysis, and controller synthesis of multipickup bidirectional inductive power transfer systems. IEEE Trans. Ind. Inf., 10 (2014), 1372–1380.Google Scholar
[4]Hui, S.Y.R.; Ho, W.C.: A new generation of universal contactless battery charging platform for portable consumer electronic equipment, in 2004. PESC 04. 2004 IEEE 35th Annual Power Electronics Specialists Conf., vol. 1, 2004, 638–644.Google Scholar
[5]Hsu, J.U.W.; Hu, A.P.; Swain, A.: Fuzzy logic-based directional full-range tuning control of wireless power pickups. IET Power Electron., 5 (2012), 773–781.Google Scholar
[6]Ping, S.; Hu, A.P.; Malpas, S.; Budgett, D.: A frequency control method for regulating wireless power to implantable devices. IEEE Trans. Biomed. Circuits Syst., 2 (2008), 22–29.Google Scholar
[7]Hu, A.P.; Chao, L.; Hao Leo, L.: A novel contactless battery charging system for soccer playing robot, in 2008. M2VIP 2008. 15th Int. Conf. Mechatronics and Machine Vision in Practice, 2008, 646–650.Google Scholar
[8]Liu, C.; Hu, A.P.: Steady state analysis of a capacitively coupled contactless power transfer system, in 2009. ECCE 2009. IEEE Energy Conversion Congress and Exposition, 2009, 3233–3238.CrossRefGoogle Scholar
[9]M. Ltd. (2011). Wireless power transmission modules. http://www.murata.com/products/wireless_power/index.html.Google Scholar
[10]Dai, J.; Ludois, D.: A survey of wireless power transfer and a critical comparison of inductive and capacitive coupling for small gap applications. IEEE Trans. Power Electron., 30 (2015), 6017–6029.CrossRefGoogle Scholar
[11]Kline, M.: Capacitive Power Transfer. M.S. Thesis, University of California at Berkeley, US, 2010.Google Scholar
[12]Van Neste, C.W. et al. : Single-contact transmission for the quasi-wireless delivery of power over large surfaces. Wireless Power Transf., 1 (2014), 75–82.Google Scholar
[13]Liu, C.; Hu, A.P.; Nair, N.K.C.: Modelling and analysis of a capacitively coupled contactless power transfer system. IET Power Electron., 4 (2011), 808–815.Google Scholar
[14]Ludois, D.C.; Reed, J.K.; Hanson, K.: Capacitive power transfer for rotor field current in synchronous machines. IEEE Trans. Power Electron., 27 (2012), 4638–4645.Google Scholar
[15]Kline, M.; Izyumin, I.; Boser, B.; Sanders, S.: Capacitive power transfer for contactless charging, in 2011 26th Annual IEEE Applied Power Electronics Conf. and Exposition (APEC), 2011, 1398–1404.Google Scholar
[16]Theodoridis, M.P.: Effective capacitive power transfer. IEEE Trans. Power Electron., 27 (2012), 4906–4913.Google Scholar
[17]Kumar, A.; Pervaiz, S.; Chieh-Kai, C.; Korhummel, S.; Popovic, Z.; Afridi, K.K.: Investigation of power transfer density enhancement in large air-gap capacitive wireless power transfer systems, in 2015 IEEE Wireless Power Transfer Conf. (WPTC), 2015, 1–4.CrossRefGoogle Scholar
[18]Dai, J.; Ludois, D.: Single active switch power electronics for kilowatt scale capacitive power transfer. IEEE J. Emerg. Sel. Top. Power Electron., 3 (2014), 315–323.Google Scholar
[19]Liang, H.; Hu, A.P.; Swain, A.: A resonant compensation method for improving the performance of capacitively coupled power transfer system, in 2014 IEEE Energy Conversion Congress and Exposition (ECCE), 2014, 870–875.Google Scholar
[20]Liang, H.; Hu, A.P.; Swain, A.; Seho, K.; Yijun, R.: An overview of capacitively coupled power transfer: a new contactless power transfer solution, in 2013 Eight IEEE Conf. Industrial Electronics and Applications (ICIEA), 2013, 461–465.Google Scholar
[21]Chao, L.; Hu, A.P.; Wang, B.; Nair, N.C.: A capacitively coupled contactless matrix charging platform with soft switched transformer control. IEEE Trans. Ind. Electron., 60 (2013), 249–260.Google Scholar
[22]Jiejian, D.; Ludois, D.C.: Biologically inspired coupling pixilation for position independence in capacitive power transfer surfaces, in 2015 IEEE Applied Power Electronics Conf. and Exposition (APEC), 2015, 3276–3282.Google Scholar
[23]Dai, J.; Ludois, D.C.: Capacitive power transfer through a conformal bumper for electric vehicle charging. IEEE J. Emerg. Sel. Top. Power Electron., PP (2015), 1–1.Google Scholar
[24]Fei, L.; Hua, Z.; Hofmann, H.; Mi, C.: A double-sided LCLC compensated capacitive power transfer system for electric vehicle charging. IEEE Trans. Power Electron., 30 (2015), 6011–6014.Google Scholar
[25]Chao, L.; Hu, A.P.; Covic, G.A.; Nair, N.C.: Comparative study of CCPT systems with two different inductor tuning positions. IEEE Trans. Power Electron., 27 (2012), 294–306.Google Scholar
[26]Chao, L.; Hu, A.P.; Budhia, M.: A generalized coupling model for capacitive power transfer systems, in IECON 2010 – 36th Annual Conf. on IEEE Industrial Electronics Society, 2010, 274–279.Google Scholar
[27]Ohira, T.: Angular expression of maximum power transfer efficiency in reciprocal two-port systems, in 2014 IEEE Wireless Power Transfer Conf. (WPTC), 2014, 228–230.Google Scholar