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Droop control is generally used to realize power sharing without communication lines. VSG (Virtual Synchronous Generator) is a control method that mimics both steady-state droop and dynamic characteristic of SG (Synchronous Generator) to enhance inertia of microgrid. In this paper, the comparison of different damping effect forms in VSG control is given firstly to draw conclusions: For the aspect...
Voltage-controlled inverters have been widely used in distributed generation due to their flexibility and smooth transition between grid-connected and islanded modes. However, in the grid-tied mode, the inherent coupling between active and reactive power will challenge the independent control of active power and reactive power, and therefore deteriorate system performance. To deal with this issue,...
The conventional droop control method, which does not require communication lines, is an effective control scheme to dispatch power among inverters in the microgrid. However, this method has inherent tradeoffs: frequency vs. active power accuracy and amplitude regulation vs. reactive power sharing accuracy. To cope with this problem, this paper presents a novel active power control strategy to improve...
In industrial application, the parallel active power filter (PAPF) is used most widely to eliminate the current distortion. It can be classified into two types according different current detection method. One is the load current detection type, and the other is the source current detection type. Load current detection method is an open-loop system, so both time delay and parameter deviation of the...
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