Departmental Bulletin Paper Different Frequencies between Power and Efficiency in Wireless Power Transfer

Muhammad Afnan, Habibi  ,  Hodaka, Ichijo

46pp.31 - 34 , 2017-07-31 , 宮崎大学工学部
ISSN:05404924
Description
Wireless Power Transfer (WPT) has been recognized as a common power transfer method because it transfers electric power without any cable from source to the load. One of the physical principle of WPT is the law of electromagnetic induction, and the WPT system is driven by alternative current power source under specific frequency. The frequency that provides maximum gain between voltages or currents is called resonance frequency. On the other hand, some studies about WPT said that resonance frequency is able to produce high power and high efficiency on the WPT system. There are cases that make WPT system has two different frequencies. One leads maximum power and another leads maximum efficiency. If WPT system works under the resonance frequency, WPT produces maximum power with lower efficiency on it. As the solution of that, the intersection frequency able to balance both power and efficiency.
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