Open- and Short-Circuit Fault Identification for a Boost dc/dc Converter in PV MPPT Systems

被引：26

作者：

Espinoza Trejo, Diego R. ^{[1
]}

Barcenas, Ernesto ^{[1
]}

Hernandez Diez, Jose E. ^{[1
]}

Bossio, Guillermo ^{[2
]}

Espinosa Perez, Gerardo ^{[3
]}

机构：

[1] Univ Autonoma San Luis Potosi, Coord Acad Reg Altiplano, Matehuala 78700, Slp, Mexico

[2] Univ Nacl Rio Cuarto, Appl Elect Grp, RA-5800 Cordoba, Argentina

[3] Univ Nacl Autonoma Mexico, Fac Engn, Mexico City 04510, DF, Mexico

来源：

ENERGIES | 2018年 / 11卷 / 03期

关键词：

fault diagnosis; photovoltaic systems; mppt; boost dc/dc converter; POWER-POINT TRACKING; DC-DC CONVERTERS; PHOTOVOLTAIC SYSTEMS; DIAGNOSIS; MODULES;

D O I：

10.3390/en11030616

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper proposes a fault identification system for short and open-circuit switch faults (SOCSF) for a dc/dc converter acting as a Maximum Power Point Tracker (MPPT) in Photovoltaic (PV) systems. A closed-loop operation is assumed for the boost dc/dc converter. A linearizing control plus a Proportional-Derivative (PD) controller is suggested for PV voltage regulation at the maximum power point (MPP). In this study, the SOCSF are modeled by using an additive fault representation and the fault identification (FI) system is synthesized departing from a Luenberger observer. Hence, an FI signal is obtained, which is insensitive to irradiance and load current changes, but affected by the SOCSF. For FI purposes, only the sensors used in the control system are needed. Finally, an experimental evaluation is presented by using a solar array simulator dc power supply and a boost dc/dc converter of 175 W in order to validate the ideas this study exposes.

引用

页数：15

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