Title :
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
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 (Vdc, 2Vdc /3, Vdc /3, 0, -Vdc /3, - 2Vdc /3 - Vdc) 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);
Conference_Titel :
Power Electronics (IICPE), 2012 IEEE 5th India International Conference on
Conference_Location :
Delhi
Print_ISBN :
978-1-4673-0931-8
DOI :
10.1109/IICPE.2012.6450420
