scholarly journals A universal automatic and self‐powered gate driver power supply for normally‐ON SiC JFETs

2021 ◽  
Author(s):  
Andreas Giannakis ◽  
Dimosthenis Peftitsis
Keyword(s):  
Power Supply ◽  
Gate Driver ◽  
Self Powered

scholarly journals Portable Photovoltaic-Self-Powered Flexible Electrochromic Windows for Adaptive Envelopes

2021 ◽  
Vol 2 (2) ◽  
pp. 174-185
Author(s):  
Antonio Cánovas-Saura ◽  
Ramón Ruiz ◽  
Rodolfo López-Vicente ◽  
José Abad ◽  
Antonio Urbina ◽  
...  
Keyword(s):  
Power Supply ◽  
Organic Solar Cells ◽  
Market Integration ◽  
Control Method ◽  
Light Transmission ◽  
Transmission Function ◽  
Electronic Control ◽  
Electrochromic Devices ◽  
Large Area ◽  
Self Powered

Variable transmission applications for light control or energy saving based on electrochromic materials have been successfully applied in the past in the building, sports, or automotive fields, although lower costs and ease of fabrication, installation, and maintenance are still needed for deeper market integration. In this study, all-printed large area (900 cm2 active area) flexible electrochromic devices were fabricated, and an autoregulating self-power supply was implemented through the use of organic solar cells. A new perspective was applied for automotive light transmission function, where portability and mechanical flexibility added new features for successful market implementation. Special emphasis was placed in applying solution-based scalable deposition techniques and commercially available materials (PEDOT-PSS as an electrochromic material; vanadium oxide, V2O5, as a transparent ion-storage counter electrode; and organic solar modules as the power supply). A straightforward electronic control method was designed and successfully implemented allowing for easy user control. We describe a step-by-step route following the design, materials optimization, electronic control simulation, in-solution fabrication, and scaling-up of fully functional self-powered portable electrochromic devices.

scholarly journals A special high-frequency soft-switched DC/DC power supply for GCT gate driver

2021 ◽  
Author(s):  
Jahangir Afsharian
Keyword(s):  
Power Supply ◽  
High Frequency ◽  
Optimization Procedure ◽  
Power Supplies ◽  
Zero Voltage Switching ◽  
General Power ◽  
Gate Driver ◽  
Isolation Transformer ◽  
Experimental Use ◽  
Gate Drivers

This thesis is devoted to the development of a novel parallel isolated power supply (PIPS) for the gate driver of integrated Gate Commutated Thyristors (GCT). The proposed PIPS is essentially a special high frequency soft switched DC/DC converter, integrating six parallel isolated power supplies in one module where each power supply generates a regulated dc supply for the GCT gate driver. In commercial GCT power supplies, a high-voltage isolation transformer is indispensable but highly inefficient in terms of cost and size, which can be significantly improved by the optimized transformer. In all, this design strives to achieve a general power supply for powering up the gate drivers of all types of GCT devices in all MV applications with minimal changes in configuration. In this thesis, the configuration of PIPS is presented and its operating principle is elaborated. The transformer optimization procedure satisfying the voltage isolation requirement of GCT gate drivers is extensively discussed. The performance of PIPS, including the front end DC/DC converter, zero voltage switching phase-shift full bridge (ZVS-PS-FB) converter, and the optimization of the transformer, is verified by simulations and experiments where a 360W laboratory prototype is built for the experimental use.

Ultra High performance, lead free Bi2WO6: P(VDF-TrFE) based triboelectric nanogenerator for self-powered sensor and smart electronic applications

2022 ◽  
Author(s):  
Dhiraj Bharti ◽  
Sushmitha Veeralingam ◽  
Sushmee Badhulika
Keyword(s):  
Output Power ◽  
Power Supply ◽  
High Performance ◽  
Lead Free ◽  
Triboelectric Nanogenerator ◽  
High Output Power ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
High Output

Obtaining sustainable, high output power supply from triboelectric nanogenerators still remains a major issue which restricts their widespread use in self-powered electronic applications. In this work, an ultra-high performance, non-toxic,...

Self-Powered Flexible Sensing System Based on Super-Tough, High Ionic Conductivity and Rapid Self-Recovery Fully Physically Crosslinked Double Network Hydrogel

2022 ◽  
Author(s):  
Shaoji Wu ◽  
Li Tang ◽  
Yue Xu ◽  
Guangcong Tang ◽  
Bailin Dai ◽  
...  
Keyword(s):  
Solid State ◽  
Power Supply ◽  
Electronic Devices ◽  
Flexible Sensors ◽  
Double Network ◽  
Sensing System ◽  
Wearable Electronic ◽  
Self Powered ◽  
Physically Crosslinked ◽  
Wearable Electronic Devices

At present, hydrogel flexible sensors have attracted wide attention in the field of wearable electronic devices. However, hydrogel flexible sensors need external solid state power supply to output stable signals....

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