scholarly journals Two-Phase Resonant Converter to Drive High-Power LED Lamps

Electronics ◽  
2019 ◽  
Vol 9 (1) ◽  
pp. 53 ◽  
Author(s):  
Christian Brañas ◽  
Rosario Casanueva ◽  
Francisco J. Díaz ◽  
Francisco J. Azcondo
Keyword(s):  
Dynamic Response ◽  
High Power ◽  
High Frequency ◽  
Pulsed Current ◽  
Resonant Converter ◽  
Two Phase ◽  
Street Lighting ◽  
Spice Model ◽  
Flicker Effect ◽  
Output Filter

This paper presents the design and modeling of a two-phase resonant converter that drives a LED lamp with a high-frequency pulsed current free of instabilities and flicker effect, fulfilling the recommendations of the IEEE PAR 1789-2015, so that it enables visible light-based communication at a 10 kB/s bit rate. The dynamic study of the converter takes into consideration the effect of the reflected impedance of the output filter on the AC side. In order to evaluate the dynamic response of the converter, a Spice model is defined. A 120 W prototype intended for street lighting applications has been built to validate the analysis and modeling.

High-Density Nanocrystalline Core Transformer for High-Power High-Frequency Resonant Converter

2008 ◽  
Vol 44 (1) ◽  
pp. 213-222 ◽  
Author(s):  
Wei Shen ◽  
Fei Wang ◽  
Dushan Boroyevich ◽  
C. Wesley Tipton IV
Keyword(s):  
High Power ◽  
High Frequency ◽  
High Density ◽  
Resonant Converter

Automated Design of a High-Power High-Frequency LCC Resonant Converter for Electrostatic Precipitators

2013 ◽  
Vol 60 (11) ◽  
pp. 4805-4819 ◽  
Author(s):  
Thiago B. Soeiro ◽  
Jonas Muhlethaler ◽  
Jorgen Linner ◽  
Per Ranstad ◽  
Johann W. Kolar
Keyword(s):  
High Power ◽  
High Frequency ◽  
Automated Design ◽  
Resonant Converter ◽  
Electrostatic Precipitators

scholarly journals High Frequency, High Efficiency, and High Power Density GaN-Based LLC Resonant Converter: State-of-the-Art and Perspectives

2021 ◽  
Vol 11 (23) ◽  
pp. 11350
Author(s):  
Seyed Abolfazl Mortazavizadeh ◽  
Simone Palazzo ◽  
Arturo Amendola ◽  
Enzo De Santis ◽  
Dario Di Ruzza ◽  
...  
Keyword(s):  
Power Density ◽  
High Power ◽  
High Frequency ◽  
High Efficiency ◽  
Resonant Converters ◽  
Switching Frequency ◽  
High Power Density ◽  
Resonant Converter ◽  
Gan Hemt ◽  
Llc Resonant Converter

Soft switching for both primary and secondary side devices is available by using LLC converters. This resonant converter is an ideal candidate for today’s high frequency, high efficiency, and high power density applications like adapters, Uninterrupted Power Supplies (UPS), Solid State Transformers (SST), electric vehicle battery chargers, renewable energy systems, servers, and telecom systems. Using Gallium-Nitride (GaN)-based power switches in this converter merits more and more switching frequency, power density, and efficiency. Therefore, the present paper focused on GaN-based LLC resonant converters. The converter structure, operation regions, design steps, and drive system are described precisely. Then its losses are discussed, and the magnets and inductance characteristics are investigated. After that, various interleaved topologies, as a solution to improve power density and decrease current ripples, have been discussed. Also, some challenges and concerns related to GaN-based LLC converters have been reviewed. Commercially available power transistors based on various technologies, i.e., GaN HEMT, Silicon (Si) MOSFET, and Silicon Carbide (SiC) have been compared. Finally, the LLC resonant converter has been simulated by taking advantage of LTspice and GaN HEMT merits, as compared with Si MOSFETs.

scholarly journals Force detection of high-frequency electron spin resonance near room temperature using high-power millimeter-wave source gyrotron

2021 ◽  
Vol 118 (2) ◽  
pp. 022407
Author(s):  
Hideyuki Takahashi ◽  
Yuya Ishikawa ◽  
Tsubasa Okamoto ◽  
Daiki Hachiya ◽  
Kazuki Dono ◽  
...  
Keyword(s):  
Electron Spin Resonance ◽  
Millimeter Wave ◽  
Electron Spin ◽  
High Power ◽  
High Frequency ◽  
Room Temperature ◽  
Force Detection ◽  
Wave Source ◽  
Spin Resonance ◽  
Millimeter Wave Source
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