Analysis of voltage ripple on input capacitors in dual-buck half bridge inverters

被引：0
|
作者：
Meng W. [1 ]
Zhang F. [1 ]
Xie J. [1 ]
Wang J. [1 ]
机构：
[1] Centre for More-Electric-Aircraft Power System, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica | 2017年 / 38卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Aeronautical static inverter; Capacitor voltage ripple; Dual-buck inverter; Half bridge; Short circuit; Two-stage;
D O I：
10.7527/S1000-6893.2016.0199
中图分类号：
学科分类号：
摘要：
Dual-buck inverter (DBI) is one of the widely adopted topologies in aeronautical static inverters (ASIs). With discrete AC filter inductor, the volume and weight of dual buck-half bridge inverters (DBHBIs) are further reduced. However, there will be voltage ripple on input capacitors when a dual-buck half bridge inverter is normally operated, especially when the load is shorted, and the ripple is at the same frequency as the output voltage. In this paper, a DBHBI with discrete AC filter inductor is taken as an example, which operates on the conditions of nominal load, short circuit and cascade. The cause for voltage ripple on input capacitors is analyzed, and the mathematical calculation method and the guidelines for capacitor design is proposed. The analysis is verified by the results of simulations and experiments. The method in this paper can be also applied to other half bridge inverters. © 2017, Press of Chinese Journal of Aeronautics. All right reserved.
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页数：10
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