ICT for Energy Efficiency - Inductive Resonant Wireless Power Transfer in GaN Technology
The course is held by prof. Corrado Florian and is part of the training provided for ET-IT PhD Students - a.y.2022/2023.
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Date: 06 SEPTEMBER 2023 from 14:00 to 18:00
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Event location: Room 1.2 - Department of Electrical, Electronic, and Information Engineering "Guglielmo Marconi" DEI - Viale Risorgimento, 2 - Bologna - In presence and online event
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Type: ET-IT Course
he course is primarily meant to be attended in person. For this reason we kindly ask you to fill out the following form if you like to attend online.
ABSTRACT
High efficiency near field wireless power transmission (WPT) in the MHz range can be achieved with the combination of high efficiency transmitter and receiver and the optimization of the inductive resonant (IR) link. When varying the distance between transmitter and receiver, the maximization of the overall DC-to-DC efficiency of the system is obtained varying the receiver input impedance, which is proportional to the transmitter HPA load. Hence, the effect of load variation of the HPA, in terms of HPA performance and maximum ratings, should be analyzed and taken into account for the optimization of the entire system. This talk describes the circuit-level nonlinear design of an entire inductive resonant wireless power transfer system, with a focus on the transmitter HPA operation under variable load. The HPA loading condition is parametrically computed as a function of a set of circuital parameters, including the power levels to be transferred and the system efficiency. The effects of load variation are analyzed for Class-D and Class-E HPA solutions. The design and implementation of a 6.78 MHz, 44-W near field IR-WPT link with 73% peak DC-to-DC efficiency, based on enhanced-mode AlGaN/GaN-power FET technology is presented as a case study. The exploitation of GaN technology is crucial to maximize the transmitter (inverter) and receiver (rectifier) efficiency and power density.
This course is part of the training provided for ET-IT PhD Students in the academic year 2022/2023.
The ET-IT PhD Students who attend both parts of "ICT for Energy Efficiency" and pass the final tests are entitled to:
- ask for credit validation;
- gain attendance hours (only for those enrolled in cycle 38).
Further information about "ICT for Energy Efficiency - Integrated current sensors" is available HERE.
