Analysis, Design and Verifications on Receiver-side Pulse-Width-Modulation Load-Independent ZVS Class-E2 Wireless Power Transfer

A compact and low-profile high frequency(HF) power converter is essential for a magnetically resonant wireless power transfer(WPT) system suitable for a small-scale electric load such as IoT equipments and medical implantable devices. This paper presents a new prototype of a class-E HF inverter/acti...

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Bibliographic Details
Main Authors: Mishima, Tomokazu, Shimizu, Shoma, Yang, Tianyu, Lai, Ching-Ming
Format: Conference Proceeding
Language:English
Subjects:
Class-E inverter/rectifier
DC-DC power converters
load-independence
magnetic resonance
Power control
Prototypes
Pulse width modulation
pulse-width-modulation(PWM)
Rectifiers
Switches
wireless power transfer(WPT)
zero voltage soft switching(ZVS)
Zero voltage switching
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Summary:A compact and low-profile high frequency(HF) power converter is essential for a magnetically resonant wireless power transfer(WPT) system suitable for a small-scale electric load such as IoT equipments and medical implantable devices. This paper presents a new prototype of a class-E HF inverter/active rectifier-based WPT system, where the load power control achieves only in the receiver(Rx) side while maintaining zero voltage soft switching(ZVS) on the transmitter(Tx)-side with the fixed frequency and duty cycle. The modeling-based analysis and design of PWM-controlled Rx-side class-E rectifier are originally presented in accordance with load-independent ZVS in the Tx-side class-E inverter. The effectiveness of the modeling and design of the class-E 2 WPT system is verified by experiment of 1MHz-8W prototype, after whereby the load-independent ZVS performance of class-E inverter is demonstrated with the relevant steady-state characteristics.
ISSN:2329-3748
DOI:10.1109/ECCE53617.2023.10362701