Open AccessResearch on filter parameter optimization method of grid-connected photovoltaic system
Author(s) -
ZhuoqunZhao,
HongjunWang,
Hui Zhao
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/619/1/012020
Subject(s) - photovoltaic system , harmonics , maximum power point tracking , total harmonic distortion , inverter , filter (signal processing) , grid connected photovoltaic power system , harmonic , power (physics) , control theory (sociology) , distributed generation , computer science , grid , power factor , electronic engineering , electrical engineering , engineering , renewable energy , mathematics , acoustics , voltage , physics , geometry , control (management) , artificial intelligence , quantum mechanics
With a large number of distributed energy and nonlinear loads such as photovoltaic and wind power are connected to the power grid, while improving the energy structure of the grid, it also greatly increases the harmonic content in the power grid, resulting in the decline of power supply quality and stability. In this paper, based on the analysis of the working principle of photovoltaic power generation system and the characteristics of the filter connected to the power grid, taking the inverter composed of high-frequency power electronic devices as an example, the principle of high-order harmonic generation is analyzed. According to this, a T-type filter is designed to suppress harmonics. The relationship between thd and filter parameters is studied, and the optimization method of T-type filter parameters is proposed Law.