Open AccessResearch on Control Strategy of Grid-connected Inverter with Active Filter Function
Author(s) -
Die Jia,
Zhong Jin,
Yongchao Yang,
Shidong Tian,
Zheng Wang
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2203/1/012073
Subject(s) - inverter , control theory (sociology) , grid , computer science , grid connection , robustness (evolution) , harmonics , harmonic , grid tie inverter , active filter , distributed generation , electronic engineering , wind power , maximum power point tracking , engineering , renewable energy , electrical engineering , voltage , control (management) , physics , mathematics , biochemistry , chemistry , geometry , quantum mechanics , artificial intelligence , gene
Grid-connected inverters incorporate distributed energy sources such as photovoltaics and wind energy into the micro-grid. Due to the volatility of distributed energy generation and the presence of a large number of non-linear loads in the micro-grid, harmonic wave seriously affect power quality. The grid-connected inverter with active filtering function is formed by adding the harmonic wave suppression function to the grid-tie inverter, which not only realizes the inverter grid connection but also achieves the purpose of harmonic wave compensation. The traditional model predictive control (MPC) has the characteristics of strong robustness and fast dynamic response, but its high switching frequency causes serious heating of the inverter. In response to the above problems, combined with hysteresis control theory, a model control strategy based on hysteresis is proposed in this paper, which improves the accuracy of grid-connected current of the grid-connected inverter with active filter function and inhibits the harmonic component of the system, verifying the effectiveness of the strategy.