Research on Three-Phase Grid-Connected Control System Based on Current Decoupling

Based on the dq model of the three-phase grid-connected inverter, the first-order and second-order current decoupling closed-loop control algorithms are deduced in detail. The first-order and second-order current decoupling grid-connected control system are simulated and verified by Matlab/Simulink....

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Bibliographic Details
Published in2022 8th International Conference on Control Science and Systems Engineering (ICCSSE) pp. 142 - 148
Main Authors Lang, Baohua, Li, Jichao, Sun, Luyan, Wang, Birong
Format Conference Proceeding
LanguageEnglish
Published IEEE 14.07.2022
Subjects
Control systems
DSP
first-order current decoupling
Inverters
Mathematical models
Matlab
Reactive power
second-order current decoupling
SVPWM
Three-phase grid-connected inverter
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DOI10.1109/ICCSSE55346.2022.10079901

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Summary:Based on the dq model of the three-phase grid-connected inverter, the first-order and second-order current decoupling closed-loop control algorithms are deduced in detail. The first-order and second-order current decoupling grid-connected control system are simulated and verified by Matlab/Simulink. At the same time, an experimental platform is further built with DSP as the control core for experimental verification. The simulation and experimental results show that the grid-connected control system based on current decoupling works well, the amplitude and phase of the grid-connected current are controllable, and it can transmit energy from the DC side to the grid side with unity power factor.
DOI:10.1109/ICCSSE55346.2022.10079901