Open AccessGrid-connected Inverter Control Strategy Based on Capacitor Voltage Error Inertia Feedback
Author(s) -
Xing Ning,
Huang Hong-quan,
Yanming Chen
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/558/5/052072
Subject(s) - control theory (sociology) , feed forward , inverter , capacitor , computer science , voltage , grid , harmonic , inertia , engineering , control (management) , control engineering , mathematics , physics , electrical engineering , geometry , classical mechanics , quantum mechanics , artificial intelligence
Firstly, the mathematical model of single-phase grid connected inverter is established.Then, the mathematical derivation is carried out accord to the state space model, and the control strategy of grid-connected inverter based on capacitor voltage error inertia feedback is proposed. In this strategy, the first-order inertial feedback of capacitor voltage error is adopted to suppress the resonance peak of LCL filter, the feedforward of capacitor reference voltage is adopted to improve the tracking performance of the system, and the proportional feedforward of grid-connected voltage is used to suppress the harmonic of power grid. In addition, Simulation verify the feasibility and effectiveness of the proposed control strategy.