Adaptive dc-link voltage control strategy to increase PV inverter lifetime

被引：10

作者：

Callegari, J. M. S. ^{[1
]}

Cupertino, A. F. ^{[2
,3
]}

Ferreira, V. N. ^{[3
]}

Brito, E. M. S. ^{[3
]}

Mendes, V. F. ^{[3
]}

Pereira, H. A. ^{[4
]}

机构：

[1] Fed Ctr Technol Educ Minas Gerais, Grad Program Elect Engn, Belo Horizonte, MG, Brazil

[2] Fed Ctr Technol Educ Minas Gerais, Dept Mat Engn, Belo Horizonte, MG, Brazil

[3] Univ Fed Minas Gerais, Grad Program Elect Engn, Belo Horizonte, MG, Brazil

[4] Univ Fed Vicosa, Dept Elect Engn, Vicosa, MG, Brazil

来源：

MICROELECTRONICS RELIABILITY | 2019年 / 100卷

关键词：

Minimum dc-link voltage; Photovoltaic inverters; Lifetime evaluation; System-level reliability; RELIABILITY;

D O I：

10.1016/j.microrel.2019.113439

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This work proposes an adaptive dc-link voltage strategy applied to a double-stage three-phase grid-connected PV inverter, in order to decrease the power devices and capacitors thermal stress, and increase the system-level reliability as a consequence. The objective is to reduce the dc-link voltage to the minimum value required to inject power into the grid. A system reliability analysis is made based on mission profiles from Brazil. The results show that the proposed technique has a positive impact on the system reliability, increasing the estimated lifetime by 75% when compared to the traditional fixed dc-link voltage strategy.

引用

页数：7

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