Microcontroller based single-phase simplified seven-level inverter for PV system

Author

Christopher, I.W. ; Parthiban, J. ; Saravanan, B. ; Kumar, Ravindra ; Pallavan, S. ; Ramesh, Ramaswamy

Author_Institution

Dept. of EEE, Tagore Eng. Coll., Chennai, India

fYear

2012

fDate

6-8 Dec. 2012

Firstpage

1

Lastpage

6

Abstract

This paper proposes the hardware design and implementation of a Microcontroller based single-phase simplified seven-level inverter for PV system. Multilevel inverters tender high power capability, associated with lower output harmonics and lower turn-off losses. This work informs a multilevel inverter for PV system using an H-bridge output stage with bidirectional auxiliary switches. The inverter is capable of producing seven levels of output-voltage levels (V_dc, 2V_dc /3, V_dc /3, 0, -V_dc /3, - 2V_dc /3 - V_dc) from the DC supply voltage. The control circuit necessary for multilevel inverter operation is implemented using an ATMEL AT89S52 Microcontroller, reducing overall system cost and complexity. Theoretical predictions are validated using simulation in MATLAB SIMULINK, and satisfactory circuit operation is proved with experimental tests performed on an experimental model.

Keywords

invertors; losses; microcontrollers; photovoltaic power systems; power system harmonics; switchgear; DC supply voltage; H-bridge output stage; MATLAB-SIMULINK simulation; PV system; TMEL AT89S52 microcontroller; bidirectional auxiliary switch; hardware design; lower output harmonics; lower turn-off loss; microcontroller based single-phase simplified seven-level inverter; multilevel inverter; power capability; theoretical prediction; Hardware; Lead; Logic gates; MATLAB; Microcontrollers; Photovoltaic systems; Switches; H-bridge; Microcontroller; Photovoltaic (PV) system; Simplified Seven-Level Inverter(SSLI);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics (IICPE), 2012 IEEE 5th India International Conference on

Conference_Location

Delhi

ISSN

2160-3162

Print_ISBN

978-1-4673-0931-8

Type

conf

DOI

10.1109/IICPE.2012.6450420

Filename

6450420