Abstract
This paper introduces scaling-factor and design guidelines for shielded-capacitive power transfer (shielded-CPT) systems, offering a simplified design process, coupling-structure optimization, and consideration of safety. A novel scaling-factor-analysis method is proposed by determining the configuration of the coupling structure that improves system safety and increases operating efficiency while minimizing the gap between the shield and the coupler plate. The inductor-series resistance is also analyzed to study the loss efficiency in the shielded-CPT system. The relationship among the shield-coupler gap, distance between the couplers, conductive-plate size, and delivered power is examined and presented. The proposed method is validated by implementing the shielded-CPT system with hardware and the result suggests that the proposed method can be used to design shielded-CPT systems with scaling-factor and safety considerations.
Highlights
Capacitive power transfer (CPT) is an alternative approach to wireless power transfer (WPT).Rather than using a magnetic field, CPT uses a quasi-static electric field (EF) to deliver power from the primary side to the secondary side through a capacitor formed by electrodes belonging to physically separate devices [1,2,3]
The concept of shielded-CPT was introduced in electric vehicle (EV) charging applications [24,25], using two extra plates to cover the coupler on each side
This paper proposes a deep analysis of scaling-factor and design guidelines to achieve a compact
Summary
Capacitive power transfer (CPT) is an alternative approach to wireless power transfer (WPT). The concept of shielded-CPT was introduced in EV charging applications [24,25], overall improved safety and higher operating efficiency in CPT systems while being safe for using two extra plates to cover the coupler on each side. The proposed shielded-CPT structure is constructed as a conventional coupling-plate improved safety and higher operating efficiency in CPT systems while being safe for human use interface with two additional plates behind each side. A design guideline is introduced for scaling optimizing the shielded-CPT system that configuration, the circuit parameter is optimized and to the required power and efficiency, the such size and requirements, specific conditions, and levellevel standards are met. By introducing transformer is coupled to the resonant inductors, providingthrough a balanced condition ofand thehardware voltage the extra plates, the EF-emission characteristic was observed field-simulation waveform and a stable ground reference to the coupling system [31].
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
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
