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 38 for “"WPT"”.
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Probabilistic category learning and memory systems functioning in those at-risk for alcohol abuse.
… students using the Weather Prediction Task (WPT). We recruited 20 high-risk and 44 low-risk participants. We hypothesized that high-risk drinkers would perform worse on the WPT, as well as a reversal learning component of the WPT. We also examined the relationship between executive …
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Single-Stage Wireless Power Transfer System with Single-Switch Secondary Side Modulation
… 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 sensing and modulation scheme, …
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A Hybrid Switched-Capacitor Converter for Capacitive Wireless Power Transfer in Biomedical Applications
… use inductive wireless power transfer (I-WPT), but capacitive wireless power transfer (C-WPT) has the potential to provide safety and size improvements over I-WPT. Current C-WPT research is focused on resonant capacitive coupling methods. Such works have reported power transfer efficiency …
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Metamaterial Enhanced Wireless Power Transmission System
… of wireless power. Wireless power transmission (WPT) has the potential to be a common source of consumable energy, but it will only receive serious consideration if the transmit and receive systems are extremely efficient and capable of delivering usable amounts of power. Research has been …
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Coupled resonator based wireless power transfer for bioelectronics
… and development of wireless power transfer (WPT) technology, however, can overcome this challenge.</p> <p>In this dissertation, I propose the use of coupled resonator WPT for bioelectronics and present a new generalized analysis and optimization methodology, derived from complex microwave …
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A Vlsi architecture for lifting-based wavelet packet transform in fingerprint image compression
… Quantization (WSQ), a wavelet packet transform (WPT) based method, to compress its fingerprint images. Though many VLSI architectures have been proposed for wavelet transform in the literature, it is not the case for the WPT. In this thesis, a VLSI architecture capable of computing the WPT is …
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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 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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Maximizing Flexibility and Efficacy of Undersea Wireless Power Transfer Systems
… 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, size, or power requirement. …
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Design of a Phi-2 and a Class E inverter for underwater systems
… This can be done with wireless power transfer (WPT), which can transmit power efficiently across mediums within the submarine, therefore eliminating the need for physical connections and making underwater systems more compact and light-weight. The thesis presents two WPT systems for an AUV with …
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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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Self Capacitance based Wireless Power Transfer for Wearable Electronics: Theory and Implementation
Wireless power transfer (WPT)
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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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Enhanced wireless power transfer system modeling using reflection theory and magnetic circuit analysis
… 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 model integrates …
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Analysis And Optimal Design Method of LCLC Resonant Tank for Bidirectional DC-DC Resonant Converter And LCLC Resonant Converter's Efficiency Performance in Wireless Low Power Transfer Applications
<p>Wireless power transfer (WPT) technology provides galvanic isolation for improved safety and also provides reliability by eliminating the need for dedicated connectors/adapters that can get damaged due to frequent usage. For these reasons, it has become popular in medical implant charging and …
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Design of autonomous sustainable unmanned aerial vehicle - A novel approach to its dynamic wireless power transfer
… power to transfer energy using novel rotating WPT charging technique to the UAV with improved range, endurance, and average speed by giving extra hours in the air. The hypothesis that was created has a broad application beyond UAVs. The drone autonomous charging was mostly done by detecting a …
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Improvements in Inductively Coupled Wireless Power Transfer Through Non-Sinusoidal Excitation and Closed-Loop Operation Using Optical Feedback
… in inductively coupled wireless power transfer (WPT) systems. The first is non sinusoidal excitation technique. By analysing the characteristics of rectifier diodes, LR time constant, and circuit impedance for nonlinear signals, a triangular pulse input is designed to operate the rectifier diode …
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Implanted Antennas and Intra-Body Propagation Channel for Wireless Body Area Network
… implanted devices and Wireless Power Transfer (WPT) for implanted devices. An implanted antenna needs to be small while it maintains Specific Absorption Rate (SAR) and is able to cope with the detuning effect due to the electrical properties of human body tissues. Most of the proposed antennas …
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Protection, Control, and Auxiliary Power of Medium-Voltage High-Frequency SiC Devices
… architecture includes a wireless power transfer (WPT) converter supplied by a grounded low voltage dc bus, a high step-down-ratio (HSD) converter powered from dc-link capacitors, and a battery-based mini-UPS backup power supply. The auxiliary-power-only pre-charge and discharge circuits are also …
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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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