PublisherInstitute of Electrical and Electronics Engineers (IEEE)
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Power generation facilities based on renewable energy sources, such as PV or wind, are frequently connected to the grid through three-phase power converters. As the power of the plant increases, the design of the grid connection filters becomes critical, as a fast dynamic performance is needed while the injection of current harmonics to the network should be prevented. LCL filters, together with trap filters tuned at the switching frequency, provide a good trade-off between both needs. However, the tuning of the controllers becomes more complex as the LCL+trap filter lead to a considerably higher order system. In this paper a tuning method for determining the parameters of proportional resonant current controllers for three-phase high power converters linked to the grid through a LCL+trap filter is proposed and analyzed. In order to validate the proposed solution, different results taken in different scenarios are shown.
CitationZhang, W. [et al.]. Tuning of proportional resonant controllers for three phase PV power converters with LCL+trap filter. A: IEEE PES Transmission & Distribution Conference and Exposition. "IEEE/PES Transmission and Distribution Conference and Exposition: Latin America (T&D-LA)". Medellin: Institute of Electrical and Electronics Engineers (IEEE), 2014.
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