Analysis of LC-LC 2 Compensated Inductive Power Transfer for High Efficiency and Load Independent Voltage Gain

Md Morshed Alam, Saad Mekhilef, Hussain Bassi and Muhyaddin Jamal Hosin Rawa
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Md Morshed Alam: Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
Saad Mekhilef: Power Electronics and Renewable Energy Research Laboratory, Department of Electrical Engineering, University of Malaya, 50603 Kuala Lumpur, Malaysia
Hussain Bassi: Department of Electrical and Computer Engineering, King Abdulaziz University, Rabigh 21911, Saudi Arabia
Muhyaddin Jamal Hosin Rawa: Department of Electrical and Computer Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia

Energies, 2018, vol. 11, issue 11, 1-14

Abstract: A novel LC-LC 2 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-LC 2 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.

Keywords: load independent voltage gain; zero phase angle (ZPA); resonant converter; inductive power transfer (IPT) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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