Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 78 for “"wireless power transfer"”.
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Miniaturized, Directional Antennas For Wireless Power Transfer
<p>Today’s age of ever advancing wireless technologies and compact mobile devices has given us the ability to stay connected in all but the remotest places on earth. However, one limiting factor to new wireless technologies has always been the battery. In this thesis the prospect of wireless power …
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Efficient Magnetic Resonance Wireless Power Transfer Systems
… to improve the performance of magnetic resonance wireless power transfer systems. Different factors have different effects on the performance and the efficiency of the maximum transfer of power in the system. These factors are: the resonance frequency; the quality factor of the resonators; the …
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Coupled resonator based wireless power transfer for bioelectronics
… increased sophistication i.e. multiple channels, wireless bi-directional communication, and responsiveness (closed-loop devices). One primary challenge in realizing miniaturized and sophisticated bioelectronics is powering. Integration and development of wireless power transfer (WPT) technology, …
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Fully Integrated Wireless Power Transfer System For Biomedical Applications
Wireless power transfer (WPT) is commonly realized by means of near-field inductive coupling and is critical to many applications. It is highly desirable to fully integrate the receiver coil (Rx) and power shaping circuits on a single chip in a standard CMOS process with no additional …
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Incorporating Wireless Power Transfer in an LED Lighting Application
… to solve this problem using different methods of wireless power transfer. Today, wireless power transfer has only been commercially demonstrated at small distances through use of induction. This thesis demonstrated the transfer of wireless power at relatively large distances through radio …
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A self-tuning 100 watt wireless power transfer system
This thesis presents a new method of controlling wireless power transfer suitable for highly resonant magnetically coupled systems. An application of this system is unattended autonomous operation such as recharging of autonomous underwater vehicles or underwater sensor networks. Special attention …
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Adaptive primary side control for a wireless power transfer optimization
A resonant inductive wireless power transfer system, consisting of a primary (transmitter) circuit and secondary (receiver) circuit, was designed and implemented. This document also contains a novel indirect feedback method to optimize the power efficiency of a wireless transfer system. The …
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Maximizing Flexibility and Efficacy of Undersea Wireless Power Transfer Systems
… way to achieve this is with remote undersea wireless power transfer (WPT) systems to allow AUV charging from remote areas of the ocean floor. While there has been significant research in WPT system design, these projects often tailor the design specifications towards a specific AUV shape, …
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6.78MHz Omnidirectional Wireless Power Transfer System for Portable Devices Application
Wireless power transfer (WPT) with loosely coupled coils is a promising solution to deliver power to a battery in a variety of applications. Due to its convenience, wireless power transfer technology has become popular in consumer electronics. Thus far, the majority of the coupled coils in these …
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Long Range Wireless Power Transfer for Application in Chronic Hydrocephalus Monitoring
Long-range wireless power transfer has the potential to serve as a platform for energising long-term medical implants. Current implementations of wireless power transfer require deliberate patient action to deliver power. Long-range wireless power transfer can supply power reliably and deliver it …
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Self Capacitance based Wireless Power Transfer for Wearable Electronics: Theory and Implementation
Wireless power transfer (WPT)
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Hybrid inductive and capacitive wireless power transfer system for future transportation electrification
The inductive link in wireless power transfer (WPT) fed by various high–frequency power converters is widely accepted for medium power (<50 kW) and medium power transfer distance (100 mm-200 mm) applications due to remarkable efficiencies (>90%) in stationary wireless charging scenarios. However, …
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DESIGN OF DYNAMIC CAPACITIVE WIRELESS POWER TRANSFER SYSTEMS FOR ELECTRIC VEHICLE CHARGING
Dynamic wireless power transfer (WPT) systems can potentially accelerate the penetration of electric vehicles (EVs) in the market by enabling stationary, semi-dynamic, and dynamic charging, thereby reducing EV costs, eliminating charging time, and enabling unlimited range. Furthermore, dynamic WPT …
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Near-field wireless power transfer to and communication with chip-scale devices
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2019-08-01
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Single-Stage Wireless Power Transfer System with Single-Switch Secondary Side Modulation
… of output voltage/current is nontrivial in a wireless power transfer (WPT) system. Previously presented methods for regulating or controlling the output of a WPT system include incorporating either post-regulator stage, wireless communication from secondary to primary side, primary side …
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Design of a Wireless Power Transfer System using Electrically Coupled Loop Antennas
Wireless Power Transfer (WPT) has become quite popular over the recent years. This thesis presents some design challenges while developing a WPT system and describes a system-level methodology for designing an end-to-end system. A critical analysis of contemporary research is performed in the form …
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A hybrid compensation-based misalignment tolerant wireless power transfer system for e-mobility
… voltage (CC/CV) charging through a wireless power transfer (WPT) system for e-mobility. The thesis proposes a hybrid multi-resonant compensation network (LCC-LCC and LCC-S) for CC/CV charging during perfect alignment, controlled by the secondary side only. Additionally, the thesis …
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Enhanced wireless power transfer system modeling using reflection theory and magnetic circuit analysis
This thesis presents an advanced model for wireless power transfer (WPT) systems, designed to optimize efficiency in high-power applications. By incorporating reflection theory and imaginary gyrator to address impedance mismatches between systems, the research refines conventional approaches. The …
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Power Management and Power Conditioning Integrated Circuits for Near-Field Wireless Power Transfer
Near-field wireless power transfer (WPT) technology facilitates the energy autonomy of heterogeneous systems, significantly augmenting complementary metal-oxide-semiconductor field-effect-transistor (CMOS) technology. In low-power wearable devices, existing power conditioning integrated circuits do …
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Resonant wireless power transfer with embedded communication for more versatile and efficient applications
… of embedding communication within the power transfer channel of a near field wireless power transfer system in order to increase the versatility and efficiency of the system. The system was built around the LTC4125 auto-resonant wireless power transmitter IC. Both the transmitter and …
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