Analysis and Suppression of High-Frequency Harmonics of High Power Photovoltaic Inverter System

Abstract:

According to the growing need for renewable energy. Grid-connected photovoltaic system is used in many territories. To suppress the high-frequency harmonics of high power photovoltaic inverter, a LC low pass filter (LPF) has been proposed in this paper. The following have been done in the study: analysis of the high power photovoltaic inverter system and its harmonics, method of high-frequency harmonics suppression, and simulation of high-frequency harmonics suppression. According to the normalization method, the parameters of LPF are calculated. Then the parameters are put into a simulation model. The simulation result show that THD is 7.26%. It is much less than the former 78.19%. So it can be widely used in power system to suppress the high-frequency and to ensure the quality of electric energy.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 1573-1576
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.1573
• Online since: May 2014
• Authors: Pei Deng*, You Xin Yuan, Liang Yuan, Ping Kuang, Jing Chen
• Keywords: Grid-Connected Photovoltaic System, High-Frequency Harmonics, Inverter

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