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Energies 2018, 11(11), 2883; https://doi.org/10.3390/en11112883

Analysis of LC-LC2 Compensated Inductive Power Transfer for High Efficiency and Load Independent Voltage Gain

1
Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
2
Center of Excellence in Renewable Energy and Smart Grid, King Abdulaziz University, Jeddah 21589, Saudi Arabia
3
Department of Electrical and Computer Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
4
Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia
*
Author to whom correspondence should be addressed.
Received: 30 June 2018 / Revised: 20 August 2018 / Accepted: 27 August 2018 / Published: 24 October 2018
(This article belongs to the Special Issue Power Electronics for Energy Storage)
Full-Text   |   PDF [4717 KB, uploaded 24 October 2018]   |  

Abstract

A novel LC-LC2 compensated resonant converter topology with high efficiency and good controllable voltage gain is presented in this paper. An additional receiving side inductor working together with the receiving coil has the contribution to work with a large range of air gap distance. Due to this property, proposed compensation technique is effective for IPT based EV charging application. Voltage gain with independent of load and input impedance having ZPA of the proposed resonant converter are observed by the frequency domain analysis. On the other hand, time domain analysis gives the circuit operation. A 500 W LC-LC2 compensated resonant converter prototype is built to testify the theoretical analysis. To observe the efficiency-comparison, an S-SP compensated resonant converter with a similar amount of output power under different air gap is also presented. In order to justify the effectiveness, the proposed compensation method is verified by the laboratory results. The highest efficiency of the proposed compensated resonant converter is 93% with output power of 500 W at 140-mm air gap between the two sides of the IPT (inductive power transfer) transformer. View Full-Text
Keywords: load independent voltage gain; zero phase angle (ZPA); resonant converter; inductive power transfer (IPT) load independent voltage gain; zero phase angle (ZPA); resonant converter; inductive power transfer (IPT)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Alam, M.M.; Mekhilef, S.; Bassi, H.; Rawa, M.J.H. Analysis of LC-LC2 Compensated Inductive Power Transfer for High Efficiency and Load Independent Voltage Gain. Energies 2018, 11, 2883.

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