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[IEEE 2019 Applications of Electromagnetics in Modern Techniques and Medicine (PTZE) - Janow Podlaski, Poland (2019.6.9-2019.6.12)] 2019 Applications of Electromagnetics in Modern Engineering and Medicine (PTZE) - Small photovoltaic installation in the power grid
摘要： The article discusses basic aspects of selecting a prosumer solar system. A simplified method for estimating the actual electricity production is shown. It was indicated how the direction and angle of light beam onto the installation affects the amount of energy produced. One and three-phase photovoltaic installations operating in an open-type power system are discussed. The discussion was supplemented with a practical example comparing electricity production.
关键词： uninterruptible power supply,supply voltage parameters,power quality
更新于2025-09-16 10:30:52
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[IEEE 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications (WiPDA) - Atlanta, GA, USA (2018.10.31-2018.11.2)] 2018 IEEE 6th Workshop on Wide Bandgap Power Devices and Applications (WiPDA) - Design of 20 kW Full-SiC, Three-level Three-Phase Uninterruptible Power Supply
摘要： In this paper, design and implementation for high efficiency 20 kW, 480 ??????, 800 ?????? full-SiC based UPS has been presented. Loss of commercial 2-level and 3-level modules are compared based on the datasheet values. Based on the result, a 3-level NPC topology has been selected which showed higher efficiency for high switching frequency range compared to 2-level case. A double-pulse test has been conducted to extract switching-loss with a designed gate driver. A lumped parameter thermal circuit simulation has been conducted to simulate the rise of junction temperature and conduction loss. A LCL filter has been designed to meet a THD requirement while the loss and power-density are optimized. The operation and efficiency has been verified by a prototype UPS. For double-conversion efficiency, 97.6% at full load can be achieved which is equivalent to 98.8 % per single AC-DC conversion.
关键词： high efficiency,SiC-based AC-DC converter,Uninterruptible power supply
更新于2025-09-04 15:30:14