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Showing 1 to 20 of 20 for “"wide bandgap devices"”.
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A Novel Auxiliary Resonant Snubber Inverter Using Wide Bandgap Devices
… high power density need to combine lasted wide bandgap (WBG) device technology and high switching frequency to reduce passive filter size thus further shrink overall space. While still maintaining decent power conversion efficiency and low electromagnetic interference (EMI) with higher …
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Dynamic Characterization of Wide Bandgap Devices for Power Electronic System Integration
Wide Bandgap (WBG) devices offer significant performance advantages for next-generation power electronic systems. However, the dynamic stresses induced by application-specific conditions present limited physical and behavioral understanding, posing critical concerns for reliability and performance …
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Design of a Hybrid Unipolar Modulation Dual-Buck Inverter using Wide Bandgap Devices
… dead time and reverse recovery concerns by using devices such as wide-bandgap GaN HEMTS and SiC Schottky diodes. The proposed inverter topology also realizes the benefits of the dual-buck topology while using half of the number of diodes and inductors compared to a standard full-bridge dual-buck …
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High-Efficiency and High-Power Density DC-DC Power Conversion Using Wide Bandgap Devices for Modular Photovoltaic Applications
… (PV) modules to ac or dc grid attract wide attentions and have significantly increased installations worldwide. Modular power conversion system has the highest efficiency of maximum power point tacking (MPPT), which can transfer more solar power to electricity. However, this system …
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On the Design of a High-Power Medium-Voltage Converter for Transportation Applications
… to power density compared to ac systems, and wide-bandgap devices enable operation at sufficiently high switching frequencies to make medium-voltage dc systems attractive. On the other hand, the sparse institutional and industrial support that presently exists for medium-voltage wide-bandgap …
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Study of Current Optocoupler Techniques and Applications for Isolation of Sensing and Control Signals in DC-DC Converters
… with low losses. Power switches fabricated from wide bandgap materials such as silicon carbide (SiC) or gallium nitride (GaN) can outperform conventional silicon switches due to material property advantages. Another common problem in grid-connected applications is the need for high …
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The Modeling of Partial Discharge under Fast, Repetitive Voltage Pulses Using Finite-Element Analysis
… will flow through power electronics systems. Wide bandgap power modules that can tolerate higher voltages and currents than silicon-based modules are the most promising solution to reducing the size and weight of power electronics systems. These wide-bandgap power modules constitute powerful …
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Advancements in resonant and current source gate driving techniques for fast switching Wide Band Gap (WBG) Metal Oxide Field Effect Transistors (MOSFETs)
… operation, especially in applications where Wide-Bandgap devices are used. This is because of their losses and poor control over the switching transitions. This thesis investigates various alternatives, specifically the Multi-Resonant Gate Driver (MRGD) and the Current Source Gate Driver …
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Thermal Stability of Al₂O₃/Silicone Composites as High-Temperature Encapsulants
… and power electronic packages based on Si devices usually work below 150°C. The emergence of wide-bandgap devices, which potentially operate above a junction temperature of 250°C, results in growing research interest in high-density and high-temperature packaging. There are high-temperature …
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High Frequency Bi-directional DC/DC Converter with Integrated Magnetics for Battery Charger Application
… more than 92 - 94% Advanced power semiconductor devices have consistently proven to be a major force in pushing the progressive development of power conversion technology. The emerging wide bandgap (WBG) material based power semiconductor devices are considered as game changing devices which can …
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DC Fault Current Analysis and Control for Modular Multilevel Converters
… configuration is designed and built. The SiC devices can be readily adopted to take advantage of the wide-bandgap devices in MVDC applications. The Full-Bridge configuration provides additional control and energy storage capabilities. The full in-depth design, controls, and testing of the MMC …
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Modeling and Design of a SiC Zero Common-Mode Voltage Three-Level DC/DC Converter
As wide-bandgap devices continue to experience deeper penetration in commercial applications, there are still a number of factors which make the adoption of such technologies difficult. One of the most notable issues with the application of wide-bandgap technologies is meeting existing noise …
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Simulation of SiC MOSFET Power Converters
<p>This thesis discusses the use of wide bandgap devices (SiC-MOSFET) in the design and implementation of various power converters (Push-pull inverter, Buck converter). Different parameters and scenarios were discussed and implemented for both silicon and silicon carbide MOSFET cases. A comparison …
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Design Optimizations of LLC Resonant Converters with Planar Matrix Transformers
… and automobiles. With the rapid development of wide-bandgap devices and novel magnetic materials, the push for higher switching frequencies to achieve higher power densities at lower costs is gaining traction. To demonstrate high efficiency and high power density, the Center for Power …
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Fabrication Refinements of Advanced Packaging Techniques for Medium-Voltage Wirebond-less Multi-Chip Power Modules
… higher efficiency and higher voltage and current devices. This requires devices with higher switching frequencies to lower the size of the passives in the converter and devices that can withstand higher operating temperatures as components move closer together to improve power densities. Devices …
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Unlocking SiC MOSFET Switching Performance Through Packaging and Instrumentation
… or inverter is the transistor. Advances in wide-bandgap semiconductors such as Gallium Nitride (GaN) and Silicon Carbide (SiC) are leading to improved transistor technologies. These materials allow for smaller transistors with reduced on state resistances and input capacitances, this reduces …
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PCB-Based Heterogeneous Integration of PFC/Inverter
… trial-and-error process. With recent advances in wide-bandgap (WBG) power semiconductor devices, namely, SiC and GaN, we have witnessed significant improvements in efficiency and power density, compared to their silicon counterparts. In a power factor correction (PFC) rectifier/inverter, the …
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Investigation of Power Semiconductor Devices for High Frequency High Density Power Converters
… It is usually required that the active power devices operate at higher switching frequencies to shrink the passive components volume. The power semiconductor devices for high frequency high density power converter applications have been investigated. Firstly, the methodology is developed to …
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Design and Integration Techniques for High-Frequency PCB-Based Magnetics in Resonant Converters
… and reliability. With the introduction of WBG devices coupled with the soft switching feature, the switching frequency can be extended beyond Mega-Hertz. With the significant increase in operating frequency, complicated magnetic components can be broken down into a cellular structure, each with …
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Towards High Efficiency and High Power Density Converter: System Level Design, Modulation, and Active EMI Filters
<p>Power converter exposes strong challenges to its efficiency, power density and reliability. For the grid-connected inverter application, three-level (3-L) T-type neutral-point-clamped (TNPC) inverters has higher efficiency and lower total harmonic distortion (THD) compared to two-level inverter. …