NDLI: Analysis and behavioural modelling of matching networks for resonant-operating capacitive wireless power transfer

Content Provider	IET Digital Library
Author	Abramov, Eli Alonso, Jose Marcos Peretz, Mor Mordechai
Abstract	This study introduces a two-port network-based behavioural modelling approach for resonant-operated capacitive wireless power transfer (WPT) systems. A simple, generic and unified modelling approach is developed to describe the behaviour of WPT systems, under changes of the source and load circuits, variations of the coupling interface and drifts of the components in the matching networks. The resultant model provides insights into the electrical cross-coupling relationships between input and output parameters of the capacitive power transfer systems, including the effect of distance and alignment of the coupling plates. Regardless of the circuit complexity, it is demonstrated that the model core can be reduced to a basic gyrator relationship with added coefficients when required, thus obtaining a compact, closed-form relationship between the input and output. To provide a simulation framework for capacitive medium variations, a simulation-compatible model of the capacitive coupling using a continuous-time variable capacitor has been constructed. The behavioural model and methodology have been validated through simulations and experiments. A 200 W experimental capacitive WPT prototype has been designed and examined for various air-gaps up to 100 mm at a resonant operation of 1.56 MHz. A very good agreement is obtained between the theoretical predictions, simulations, and experimental results.
Starting Page	2615
Ending Page	2625
Page Count	11
ISSN	17554535
Volume Number	12
e-ISSN	17554543
Issue Number	Issue 10, Aug (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/12/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2018.6136
Journal	IET Power Electronics
Publisher Date	2019-01-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Air Gap Basic Gyrator Relationship Behavioural Model Capacitive Coupling Capacitive Medium Variations Capacitive Power Transfer System Circuit Complexity Closed-form Relationship Continuous-time Variable Capacitor Coupling Interface Coupling Plate Alignment Coupling Plate Distance Electrical Cross-coupling Relationships Electromagnetic Induction Experimental Capacitive WPT Prototype Frequency 1.56 MHz Inductive Power Transmission Input Parameter Load Circuit Matching Network Other Power Apparatus And Electric Machine Output Parameter Power 200 W Power Capacitor Protection Apparatus Resonant Operation Resonant-operated Capacitive Wireless Power Transfer System Resonant-operating Capacitive Wireless Power Transfer Resultant Model Simulation-compatible Model Size 100.0 Mm Source Circuit Two-port Network-based Behavioural Modelling Approach Unified Modelling Approach WPT System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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