1 Department of Energy Technology, The Faculty of Engineering and Science, Aalborg University, VBN2 The Faculty of Engineering and Science (ENG), Aalborg University, VBN3 Power Electronic Systems, The Faculty of Engineering and Science, Aalborg University, VBN4 Electric Power Systems, The Faculty of Engineering and Science, Aalborg University, VBN5 University of Alberta6 University of Alberta
The mutual interactions between the parallel grid-connected converters coupled through the grid impedance tend to result in a number of stability and power quality challenges. To address them, this paper proposes an active damper concept based on a low-power, high-bandwidth power converter. The basic idea behind this proposal is to dynamically adjust the grid impedance seen from the point of common coupling of the grid-connected converters, such that the potential instabilities and resonance propagation can be effectively mitigated. Simulation and laboratory tests on three parallel grid-connected converters are carried out. The results validate the stabilizing performance of the active damper.
Ieee Applied Power Electronics Conference and Exhibition (apec), 2013, p. 1131-1138
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I E E E Applied Power Electronics Conference and Exposition. Conference Proceedings
IEEE Applied Power Electronics Conference and Exposition, APEC 2013