A Study on Optimization of the Wireless Power Transfer Using the Half-Bridge Flyback Converter

Jang, Jinju; Chae, Won-Yong; Kim, Ho‐Sung; Lee, Dong-Gil; Kim, Hee-Je

doi:10.1109/iccrd.2010.164

Cited by 14 publications

(3 citation statements)

References 3 publications

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“…Except for compensation network and circuit analysis, the efficiency-based optimisation is also very important since it directly determines system power loss. A large number of researches have been done to improve system performances, among which efficiency is always included [15][16][17][18][19][20]. Jang et al [15] proposed a protection circuit, which keeps the practical working frequency a little higher than system resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

“…A large number of researches have been done to improve system performances, among which efficiency is always included [15–20]. Jang et al [15] proposed a protection circuit, which keeps the practical working frequency a little higher than system resonant frequency. Therefore, zero voltage switching (ZVS) can be always achieved and high efficiency can be implemented.…”

Section: Introductionmentioning

confidence: 99%

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LC/CL compensation topology and efficiency‐based optimisation method for wireless power transfer

Yao

Liu

Wang

et al. 2018

IET Power Electronics

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Wireless power transfer (WPT) has attracted a large amount of attention due to its inherent advantages such as convenience, safety, low maintenance, weather proof and so on. Compensation topology is crucial for WPT system due to its function of reducing reactive power and improving system efficiency. Series-series (SS) compensation topology is widely employed due to a simple structure and the characteristic of constant current output (CCO). However, it has three serious drawbacks: high-voltage stresses on compensation capacitors, poor CCO characteristic under practical situations and significant dependence on coupling coils. This study proposes LC/CL (primary inductor-capacitor and secondary capacitorinductor) compensation topology to eliminate aforementioned deficiencies of SS. The voltage stresses on compensation capacitors of LC/CL are much lower than those of SS. LC/CL also provides better CCO characteristics in imperfect scenarios. Load current of LC/CL compensated system only increases by 1.89% when the load is reduced by half. In contrast, the load current of SS compensated system increases by 6.87% with identical load reduction. An efficiency-based optimisation method is proposed for higher end-to-end efficiency as well. The validity of the optimisation is justified by both simulation and experiment. The efficiency of the optimised system is about 2% higher than that of a non-optimised system.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

LC/CL compensation topology and efficiency‐based optimisation method for wireless power transfer

Yao

Liu

Wang

et al. 2018

IET Power Electronics

View full text Add to dashboard Cite

show abstract

“…5. Moreover, the circuit operates on zero-current state and the efficiency is very high [11]. The secondary circuit 0.1 0.039 11.8 11.56 According to the calculations as above, the table 1 shows the design parameters for the system.…”

Section: Pulse Switching Circuitmentioning

confidence: 99%

Design of wireless power driving and controlling system for electrically driving liquid crystal micro-lens array

Liu

Zhang

et al. 2011

SPIE Proceedings

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A novel wireless power driving and controlling system is proposed, which is based on the electrical driving and controlling characteristics of liquid crystal microlens array with tunable focal length. The system consists of two isolated circular copper stacked coils with circular cross section. Both of coils are air-cored. The big one, which is used to generate electromagnetic field, has the wire diameter of ~1mm, and the coil diameter of ~38 mm and the height of 10 mm. By contrast, the small one, used to produce electromotive force by induction effect, is ~1 mm, ~13 mm and ~18 mm, respectively. The varying electromotive force is generated in the small coil by the variable intensity of magnetic field resulting from changing the time of current through the big coil. The agreement of experimental results with the theoretical analysis proves that the electromotive force can be continuously changed from 0 to 30 rms V (root mean square), when the duration of current through the big coil is reasonablely selected. It is very important that the clear image can be obtained and the imaging quality of liquid crystal microlens array can be comparable to that of conventional optical microlens array.

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A system for wireless inductive power supply of electric vehicles while driving along the route

Russer

Haider

Weigelt

et al. 2017

2017 7th International Electric Drives Production Conference (EDPC)

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A Study on Optimization of the Wireless Power Transfer Using the Half-Bridge Flyback Converter

Cited by 14 publications

References 3 publications

LC/CL compensation topology and efficiency‐based optimisation method for wireless power transfer

LC/CL compensation topology and efficiency‐based optimisation method for wireless power transfer

Design of wireless power driving and controlling system for electrically driving liquid crystal micro-lens array

A system for wireless inductive power supply of electric vehicles while driving along the route

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