Krismadinata, Asnil, Husnaini Irma, Hendri
This paper proposes the hardware design and implementation of a microcontroller based single-phase fivelevel cascaded H-bridge multilevel inverter for photovoltaic system. The inverter is capable of producing five levels of output-voltage levels (2Vdc, Vdc, 0, −Vdc, and −2Vdc) from the dc supply voltage. Selective harmonic elimination pulse width modulation (SHEPWM) technique was employed to improve the output waveform quality. Digital optimized switching angles algorithm was implemented in a low cost processor ATMega 8535 to generate switching signal. The proposed system was verified through a small-scale laboratory prototype was built and tested. Its results indicated the proposed method’s effectiveness and the application feasibility of the fundamental frequency switching. © 2017 American Scientific Publishers All rights reserved.
Centre of Renewable Energy Research, Department of Electrical Engineering, Faculty of Engineering, Universitas Negeri Padang, 25131, West Sumatera, Indonesia
