Output voltage sensor based maximum power point tracking for PV system using SEPIC

Author

Killi, Muralidhar ; Samanta, Susovon

Author_Institution

Dept. of Electr. Eng., Nat. Inst. of Technol., Rourkela, India

fYear

2015

fDate

17-19 March 2015

Firstpage

1112

Lastpage

1116

Abstract

Maximum power point tracking (MPPT) algorithm with a single output voltage sensor for a photovoltaic (PV) system is presented in this paper. The MPPT algorithm is developed by considering the slope (dV₀/dD) of V₀ - D characteristics. In this method only a voltage divider circuit is used to sense the converter output voltage (V₀). The steady state behavior, tracking performance for a change in insolation and for a load variation with the output voltage sensor based MPPT algorithm are addressed through experimental results to determine the tracking efficiency. The duty cycle (D) is generated directly without any proportional-integral control loop to simplify the control circuit. Single ended primary inductance converter (SEPIC) is used for experimental validation of the algorithm with microcontroller.

Keywords

electric sensing devices; maximum power point trackers; photovoltaic power systems; voltage dividers; MPPT algorithm; PV system; SEPIC; control circuit; duty cycle; maximum power point tracking; microcontroller; photovoltaic system; single ended primary inductance converter; single output voltage sensor; steady state behavior; tracking efficiency; voltage divider circuit; Batteries; Load management; Maximum power point trackers; Photovoltaic systems; Steady-state; Voltage measurement; Photovoltaic (PV); maximum power point tracking (MPPT); single ended primary inductance converter (SEPIC); voltage sensor;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology (ICIT), 2015 IEEE International Conference on

Conference_Location

Seville

Type

conf

DOI

10.1109/ICIT.2015.7125246

Filename

7125246