Abstract
In this paper, the modelling and analysis of resonant wireless power transfer (RWPT) system are carried out by using circuit theory. Equations of the efficiency and frequency are derived for basic series-series circuit topology and series-parallel-mixed circuit topology. The designed model uses the series-parallel-mixed topology. The model is tested for two different peak-to-peak voltage levels including 20 V and 40 V. The achieved efficiency at 20 V is 49.10% and at 40 V is 49.52% approximately. The modelling is performed by using advanced design system (ADS) high frequency design software. In addition, an overview of currently available wireless power transfer (WPT) technologies and the recent study on inductive wireless power transfer (IWPT) and resonant wireless power transfer (RWPT) systems is also presented.
Highlights
Wireless power transfer (WPT) was first reported in the early 20th century and the idea was given by Nikola Tesla [1]
When the parasitic capacitance of the resonating coils are inadequate to achieve a resonance at the required frequency, an external capacitor need to be added in order to realize the resonance state of coils [4]
The Authors have designed a WPT model for charging the small battery of implantable devices. They studied the behaviour of the model and analysed that it works like the traditional inductive wireless power transfer (IWPT) when the operating frequency is not resonant
Summary
Wireless power transfer (WPT) was first reported in the early 20th century and the idea was given by Nikola Tesla [1]. According to power transfer technique, WPT can be radiative or non-radiative. The non-radiative wireless power transfer uses near-field inductive coupling or resonant coupling. It is suitable for short-range and mid-range applications. The non-radiative power transfer mechanism includes inductive wireless power transfer (IWPT) and resonant wireless power transfer (RWPT). The IWPT mechanism uses electromagnetic induction technique for transferring the electrical energy wirelessly from primary to secondary coil. The RWPT is the reformed and improved form of the IWPT technology. It takes the benefit of resonance state of coils and uses the resonance coupling to enhance the efficiency by getting the maximum amount. When the parasitic capacitance of the resonating coils are inadequate to achieve a resonance at the required frequency, an external capacitor need to be added in order to realize the resonance state of coils [4]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
