Influence analysis of the effects of an inductive-resistive weak grid over L and LCL filter current hysteresis controllers
Document typeConference report
PublisherEuropean Power Electronics Association
Rights accessRestricted access - publisher's policy
The objective of this paper is to analyse the influence of a non-ideal grid over hysteresis controllers of converters connected to the grid through both L and LCL filters. The paper will describe the different possible configurations in both cases, analysing the effect of a general R-L grid. Limit values for both grid inductance and resistance are given for the L structure. In the case of LCL connection, the analysis will overview important issues such as active damping, and switching behaviour giving limits to stability as a function of grid impedance value.
CitationCobreces, S. [et al.]. Influence analysis of the effects of an inductive-resistive weak grid over L and LCL filter current hysteresis controllers. A: European Conference on Power Electronics and Applications. "EPE 2007 - 12th European Conference on Power Electronics and Applications". Aalborg: European Power Electronics Association, 2007.