An investigation of flying capacitor converter for circuit integration
An investigation of flying capacitor converter for circuit integration
复制标题
电路集成飞跨电容变换器的研究
DOI：
10.1002/tee.20671
复制
发表时间：
2011
影响因子：
1
通讯作者：
H. Ohashi
中科院分区：
文献类型：
--
作者：
M. Kamaga;Kyungmin Sung;Yukihiko Sato;H. Ohashi
功率变换器的输出功率密度得到了提高。在许多应用中要求具有低谐波失真和低电磁干扰（EMI）的功率变换器中，通常要连接笨重的谐波和EMI滤波器。提高开关频率可以减小谐波滤波器的体积。然而，更高的开关频率会导致更大的开关损耗和严重的电磁干扰。另一种方法是通过引入多电平变换器来消除谐波和电磁干扰。然而，随着电平的增加，电路元件的数量将超过实现的实际限制。因此，从实用的角度来看，主电路和相关电路应该集成。然而，目前还没有明确的多电平拓扑结构适合电路集成。此外，考虑到芯片尺寸，降低总器件损耗的有效性尚未得到评估。本文通过理论和实验研究，阐明了飞行电容多电平拓扑在电路集成中的优势。此外，还估计了飞电容变换器的总器件损耗和芯片尺寸。©2011日本电气工程师学会。约翰·威利父子出版公司。
Output power density of power converters has been increased. In power converters with lower harmonic distortion and lower electromagnetic interference (EMI) which are required in many applications, bulky harmonic and EMI filters are usually connected. The volume of the harmonic filters can be reduced by increasing the switching frequency. However, higher switching frequency will cause larger switching loss and severe EMI. As another approach, there is possibility of intrinsic elimination of harmonics and EMI by introducing multilevel converters. However, as the number of levels increases, the number of circuit components will exceed the practical limit of the implementation. Thus, from a practical viewpoint, the main circuit and related circuits should be integrated. However, it has not been clarified which multilevel topology is suitable for circuit integration. In addition, the effectiveness in reducing total device loss considering chip size has not been evaluated. In this paper, the advantage of a flying capacitor multilevel topology for circuit integration is clarified by theoretical and experimental investigations. Also, the total device loss and chip size of the flying capacitor converter are estimated. © 2011 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.