Opening the Box: Survey of High Power Density Inverter Techniques From the Little Box Challenge
Opening the Box: Survey of High Power Density Inverter Techniques From the Little Box Challenge
复制标题
打开盒子：从小盒子挑战中调查高功率密度逆变器技术
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
H. Chiu
中科院分区：
文献类型：
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作者：
Katherine A. Kim;Yu;Ming;H. Chiu
小盒子挑战赛 (LBC) 是由 Google 和 IEEE 电力电子协会于 2014 年至 2015 年主办的一项竞赛，参赛者面临设计高功率密度单相 2 kVA 逆变器的挑战。本文调查了八个不同参赛团队的设计，包括学术资助获得者、决赛入围者和获奖者。概述了每个团队的逆变器拓扑、电源去耦电路和热管理策略。宽带隙开关在逆变器和功率去耦电路中大量使用，特别是 GaN 开关。大多数团队使用具有一些变化的全桥逆变器，最常见的功率去耦策略是使用同步降压转换器和功率缓冲电容器。一个团队使用了多级逆变器方法，多个团队提出了创新的电源去耦拓扑。散热器和主动冷却系统（其中许多是定制的）对于团队保持在 50 °C 外壳温度限制内至关重要。调查团队得出的功率密度范围为 55.8 至 216 W/in 3 ，全部超过 50 W/in 3 LBC 要求。本文调查了各个团队的方法，分享了台湾科技团队的实验结果，并重点介绍了参与 LBC 的团队的一些创新。
The Little Box Challenge (LBC) was a competition sponsored by Google and the IEEE Power Electronics Society in 2014–2015, where participants were challenged to design a high power-density single-phase 2 kVA inverter. This paper surveys the designs from eight different participating teams, including academic grant awardees, finalists, and the winners. Inverter topologies, power decoupling circuits, and thermal management strategies are overviewed for each team. Wide bandgap switches were heavily utilized in both the inverter and power decoupling circuits, particularly GaN switches. Most teams utilized a full-bridge inverter with some variations and the most common power decoupling strategy was the use of a synchronous buck converter and a power buffering capacitor. One team used a multi-level inverter approach and a number of teams proposed innovative power decoupling topologies. Heat sinks and active cooling systems, many of which were custom made, were crucial for teams to stay within the 50 °C case temperature limit. The resulting power density of the surveyed teams ranged from 55.8 to 216 W/in 3 , all of which exceed the 50 W/in 3 LBC requirement. This paper surveys the approaches for various teams, shares experimental results from the Taiwan Tech team, and highlights some innovations from the teams that participated in the LBC.