Selection Method of Modulation Index and Frequency ratio for Getting the SPWM Minimum Harmonic of Single Phase Inverter

Emitter: International Journal of Engineering Technology

Agus Risdiyanto¹  AgusJunaedi¹  Bambang Susanto¹  AnwarMuqorobin¹  Ant. Ardath Kristi¹  Noviadi Arief Rachman¹  Harjono Priyo Santosa² 

[1] Research Center for Electrical Power and Mechatronics,Indonesian Institute of Sciences;Research Center for Electrical Power and Mechatronics, Indonesian Institute of Sciences ;

关键词: SPWM inverter;    harmonic content;    modulation index;    frequency ratio;    Cubic Spline;   

DOI  :  10.24003/emitter.v9i1.587

来源: DOAJ

【 摘 要 】

Harmonic content is an important parameter in relation to the power generated by inverter. In power conversion technology of inverter, sinusoidal pulse width modulation (SPWM) is the most popular used by many researchers. The advantages of SPWM inverter operation as a conversion technique compared to other inverter types can be seen from the low harmonic distortion in the output voltage of inverter. Therefore, the SPWM signal generation process becomes a determining factor for the performance of the overall system. This paper present the method for selecting the modulation index (ma) and frequency ratio (mf) using Cubic Spline Interpolation to get minimum harmonic of SPWM inverter that generated. Both parameters controlled with varied values digitally using microcontroller to generate SPWM, then the output of inverter with and without LC filter was investigated. The results show that the use of Cubic Spline Interpolation method in the selection of ma and mf precisely managed to produce SPWM inverter with minimum harmonic content. At the inverter output, the use of LC filter is not only useful for converting SPWM signals to sinusoidal waveforms but can also reduce harmonic content significantly less than 3 %.

【 授权许可】

Unknown