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International Journal of New Technology and Research

Impact Factor 3.953

(An ISO 9001:2008 Certified Online Journal)
India | Germany | France | Japan

Current Control with Improved Anti-interference Ability for Grid-connected Inverters

( Volume 1 Issue 5,September 2015 ) OPEN ACCESS

Sijia Liu, Shengxian Zhuang


In order to improve anti-interference ability of current control in the grid-connected inverter, this paper presents a current control method based on the disturbance observer. According to the disturbance observer control principle, the model of closed-loop current control is used to design current disturbance observing controllers, which makes the change of three-phase grid voltages as external disturbance. This method can reduce the output current harmonics caused by the unbalanced voltages or the voltage distortion, and the simulation results are provided to demonstrate the effectiveness of the proposed method.

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