Rancangan Simulasi Inverter 7 - Tingkat Tipe Flying Capacitor untuk Aplikasi PLTS Mandiri Energi Bersih Dan Terbarukan

Christoper Tjokro

Christoper Tjokro Universitas Katolik Soegijapranata

Abstract

Limitations of the voltage rating was the main issue in high voltage power conversion. By applying multicell inverters, it is possible to synthesize a high voltage waveform from multiple voltages. In this case is designed a simulated flying capacitor, seven level inverter which will be furthered used in a photovoltaic energy generation system as an alternative in energy source. In a photovoltaic generation system, the main components are the PV, MPPT, and the inverter. As conventionally designed, the inverter of the system uses the conventional method of Half – bridge type inverter which has a relatively high harmonic distortion in its waveform.What will be further discussed is the flying capacitor, seven level inverter. The seven level inverter has higher stability and lower harmonic distortion in its output waveform, Asin real application the harmonic distortion of an output waveformshould be below 5% for an allowed and recommended general application use. By this project, the total output harmonic distortion of this seven level inverter is 3,83%. The data that would be the reference for this paper is the data from the simulated design of the flying capacitor, seven level inverter using the Power Simulater software. Asit will be mentioned later on in the paper, there will be a brief explanation of the MPPT that would be used to boost the DC photovoltaic source to a desired value and a more detailed explanation in the inverter design to supply an AC source that could be later used in general purposes.

Keywords: Multilevel Inverter,Photovoltaic, Power Supply

References

Alberto, C. et al. (2012) ‘Minimization of THD and Angle Calculation for Multilevel Inverters’, (5).

Eaton Powerware (no date) Harmonics in your electrical system.

IEEE (1993) IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems, IEEE Std 519- 1992. doi: 10.1109/IEEESTD.2014.6826459.

Khadse, S., Mendole, R. and Pandey, A. (2017) ‘A 5-Level Single Phase Flying Capacitor Multilevel Inverter’, International Research Journal of Engineering and Technology(IRJET), 4(2), pp. 348–352.

Available at: https://irjet.net/archives/V4/i2/IRJET- V4I269.pdf.

Narmatha, R. (2013) ‘Inverter Dead-Time Elimination for Reducing Harmonic Distortion and Improving Power Quality’, 3(February), pp. 216–221.

Oliva, A. et al. (2005) ‘Reduction of total harmonic distortion in power inverters’, Latin American Applied Research, 35(2), pp. 89– 93.

Raharjo, Y. I. et al. (2017) ‘Implementasi MLPDS ½ λ pada AT mega 8535 untuk Aplikasi Inverter 5-Tingkat’, pp. 52–56.

Riyadi, S. (2010) Diktat Elektronika Daya Lanjut. Semarang.

Riyadi, S. (2004) Multicell Converter in application as an active power filter. Semarang.

Sato, K., Haga, H. and Nagaoka, S. K. (2016) ‘Single-phase 7-level inverter for reducing number of switches’, INTELEC, International Telecommunications Energy Conference (Proceedings), 2016–Septe. doi: 10.1109/INTLEC.2015.7572312.

Verma, S. B., Raisoni, G. H. and Rewatkar, R. (2015) ‘Comparison of Grid Connected 5- Level and 7-Level Inverters’, International Journal of Electrical, pp. 2320–2084.