Title :
An online technique for condition monitoring of capacitor in PV system
Author :
Ahmad, Md Waseem ; Arya, Abhinav ; Anand, Sandeep
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol., Kanpur, Kanpur, India
Abstract :
DC-DC converters are used to interconnect solar photovoltaic (PV) to a dc micro grid or to a battery. Capacitors are connected at the output of a PV terminal to minimize power pulsation. Operational life of capacitor decreases due to various electrical and environmental parameters. In this paper, a method for condition monitoring of the capacitors used in PV system is proposed. The technique combines the estimation of equivalent series resistance (ESR) and capacitance in one tool. This technique allows reliable prediction of capacitor life as compared to existing techniques. The proposed method can be implanted in the same microcontroller that is used for implementing the maximum power point tracking. To validate the efficacy of the method detailed simulation studies are performed in MATLAB-Simulink.
Keywords :
condition monitoring; distributed power generation; maximum power point trackers; microcontrollers; photovoltaic power systems; power capacitors; power system interconnection; DC microgrid; DC-DC converters; ESR estimation; PV system; capacitor condition monitoring; capacitor life prediction reliable; equivalent series capacitance estimation; equivalent series resistance estimation; maximum power point tracking; microcontroller; power pulsation minimization; solar photovoltaic system interconnection; Capacitance; Capacitors; Condition monitoring; Equivalent circuits; Mathematical model; Microcontrollers; Microgrids; Aluminium Electrolytic Capacitor; MPPT; condition monitoring; diagnosis; equivalent series resistance(ESR); photovoltaic(PV);
Conference_Titel :
Industrial Technology (ICIT), 2015 IEEE International Conference on
Conference_Location :
Seville
DOI :
10.1109/ICIT.2015.7125215
