Voltage Control Strategies of Smart Transformer Considering DC Capacitor Lifetime

被引：0
|
作者：
Zhu, Rongwu [1 ]
Jedtberg, Holger [1 ]
Liserre, Marco [1 ]
机构：
[1] Christian Albrechts Univ Kiel, Chair Power Elect, Kiel, Germany
来源：
IECON 2017 - 43RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2017年
基金：
欧洲研究理事会;
关键词：
solid-state transformer; smart transformer; aluminum electrolytic capacitor; unbalanced load; RELIABILITY;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Distribution grids unbalance challenges the DC-link of the Smart Transformer leading to higher ripples and then the lifetime of the DC aluminium electrolytic capacitors (AEC) is reduced. Additionally, dead time and nonlinearity characteristic of IGBT also may introduce ripple current in DC link, potentially decreasing the lifetime of AEC. Based on physical characteristic of AEC, the lifetime estimation of AEC is investigated considering aforementioned impacts. To suppress these impacts, an improved voltage control strategy that can reduce AEC current ripple and then preserve AEC lifetime is proposed. The theoretical analysis has been demonstrated by the simulation results.
引用
收藏
页码：4278 / 4283
页数：6
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