Yuanpeng FENG, Jiuhe WANG, Jianguo LI, et al. Control Strategy of Vienna Rectifier With LCL Filter Under Weak Grid Conditions[J]. Power Generation Technology, 2019, 40(3): 286-293.
Yuanpeng FENG, Jiuhe WANG, Jianguo LI, et al. Control Strategy of Vienna Rectifier With LCL Filter Under Weak Grid Conditions[J]. Power Generation Technology, 2019, 40(3): 286-293. DOI: 10.12096/j.2096-4528.pgt.18155.
and the change of the grid impedance in the actual power grid will further affect the stability of the rectifier. The Euler-Lagrangian mathematical model of LCL-type Vienna rectifier in
dq
synchronous rotating coordinate system was established
and the nonlinear hybrid passive control strategy of LCL-type Vienna rectifier under weak grid conditions was proposed
which theoretically guarantees the progressive of closed-loop system. It is stable and can meet the requirements of the dynamic and static characteristics of the rectifier and the harmonic suppression capability of the AC side under ideal grid and weak grid conditions. At the same time
it can eliminate the coupling term between
dq
axes in the established system model. In the Matlab/Simulink simulation environment
the feasibility of the proposed control strategy is verified by simulation experiments under ideal grid conditions and weak grid conditions.
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references
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