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 23 for “"wireless charging"”.
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Efficient wireless charging with gallium nitride FETs
Though wireless charging is more convenient than traditional wired charging methods, it is currently less efficient. This not only wastes power but can also result in a longer charging time. Improving the efficiency of wireless charging systems is equivalent to reducing the sources of loss in the …
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Circuits and systems for efficient portable-to-portable wireless charging
… low-power portable electronics, from implants to wireless accessories, powering these devices efficiently and conveniently is an escalating issue. The proposed solution is to wirelessly recharge these lower-power portable devices through a common magnetic link with a higher-power portable device, …
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Orientation-indepedent wireless charging of multiple mobile devices at a distance
… remember to recharge each device, every day. Wireless charging promises to free users from this burden, allowing devices to remain permanently unplugged. Today's wireless charging, however, is either limited to a single device, or is highly cumbersome, requiring the user to remove all of her …
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New Receiver Coil for Enhanced Misalignment Tolerance in Wireless Charging of Hybrid/Electric Vehicles
… in recent years, the technology known as wireless charging has caught the attention of many Original Equipment Manufacturers (OEM). Convenience, safety and cost reduction are just some of the many benefits of this emerging technology. However, one of the current challenges associated with …
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Soft-switched, active-clamped DC/AC and AC/AC converters for IPT-based wireless charging applications
… of high cost, limited driving range, and long charging time. In EV wireless charging systems using IPT technology, power electronic converters play a vital role to reduce the size and cost, as well as to maximize the efficiency of the overall system. Conventionally, the IPT systems utilize two …
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Design and implementation of an inductive power transfer system for wireless charging of future electric transportation
… (SS-RIPT) system for electric vehicle battery charging application. In meeting this objective, several critical deficiencies about the field of RIPT based EV chargers specific to stationary charging have been solved. Firstly, to increase the tolerance to misalignments, use of an unsymmetrical …
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Privacy-preserving authentication and billing for dynamic charging of electric vehicles
Dynamic charging of electric vehicles (EVs) is a promising technology for future electrified transportation. By installing wireless charging pads under the roadbed, dynamic charging allows EVs to charge their batteries while moving through magnetic induction between the wireless charging pad and …
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Road-Embedded IPT Systems for Charging In-Motion Electric Vehicles
… emerging technologies facilitating this shift, wireless charging systems for in-motion EVs offer a particularly promising solution. Road-embedded inductive power transfer (IPT) enables dynamic wireless charging while vehicles are in motion, addressing some limitations of conventional plug-in EV …
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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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Circuits for efficient and secure power delivery in distributed applications
… in power delivery. Existing frameworks for charging electronic devices, be they wired or wireless, either end up limiting the amount devices can be shrunk due to the size of standardized connectors or end up restricting their free placement due to their reliance on charging mats. The large …
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Charging facility allocation in smart cities
… plan the energy sources and energy delivery via charging facilities to EVs, taking into consideration interdependencies between roads/transportation and electric grid. In this thesis, we focus on studying the placement of energy sources and their charging facilities for EVs by developing: 1) an …
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System Resilience Assessment and Improvement with Applications of Unmanned Aerial Vehicles
… To address this, we propose using the dynamic wireless charging system equipped with the electrification line (E-line) to increase the drones' flight time in real-time. Hence, this research aims to optimize the length and location of the E-line in addition to the number of drones to cover the …
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Two-dimensional crystals : spectroscopy and electronic applications
… flexible rectifier as an enabling component for wireless energy harvester. It is the first flexible rectifier operating up to the X-band and it covers most of the unlicensed industrial, scientific and medical (ISM) radio band, including the Wi-Fi channels. By integrating this rectifier with an …
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Optimal Deployment of Public Charing Infrastructures in Transportation and Power Network
… the usage of PEVs is the availability of charging infrastructures. Currently, the PEVs can be recharged at home and in public charging stations. A recharging method still under development and experiment is called dynamic wireless charging lanes. This method could charge the electric …
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Hardware and protocols for authentication and secure computation
… K-163 curves, which allows us to build a secure wireless-charging system that can block power from counterfeit and potentially dangerous chargers. Next we build upon these insights to develop a new authentication protocol which combines the leakage resilience and public-key authentication …
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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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Design of contactless capacitive power transfer systems for battery charging applications
… of this thesis, the CPT system is extended to charging an industrial electric vehicle (IEV). As the requirement of charging an IEV varies depending on its battery pack. The power flow and control for the CPT systems is implemented.
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Development of a Novel Multiport Power Converter for Inductive Power Transfer Applications
… community and industry experts agree that wireless EV charging through Inductive Power Transfer (IPT) can potentially accelerate the uptake of EVs. As opposed to plug-in charging, wireless systems enable EV charging without the need for user interaction. Hands-free initiation of the …
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Flux Pumping for High-Tc Superconducting (HTS) Magnets
High Tc superconductors are enabling in the generation of extremely high magnetic fields. Flux pumping is a promising technology which can be used to operate HTS magnets without significant loss. In this decade, several HTS flux pumps based on travelling magnetic waves have been developed, yet …
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