Abstract
Results of research of the converter control possibilities in the grid-tied renewable energy power plant are presented in this paper. Converter of the power plant consists of the DC chopper and the grid-tied inverter connected in series. Quality of the converter operation depends both on the DC chopper and inverter operation. Two ways of the converter operation control were researched: control of the DC chopper operation and control of the grid-tied inverter operation. Combination of both ways of the converter operation control has to be applied in order to achieve maximum available power production and the best parameters of the converter operation quality, such as maximum available efficiency of the power plant and minimum total harmonic distortion factor. DOI: http://dx.doi.org/10.5755/j01.eee.19.10.5891
Highlights
Development of the distributed power systems based on renewable energy sources (RES) requires more and more converters of various types and capacities
Additional power electronic equipment is necessary in some cases for feeding of loads, which are sensitive to the voltage distortion of the power source [2]
DC chopper operation control is performed by changing control voltage of DC chopper Uv (Uv = 10, V) which refers duty cycle with constant chopping frequency fc
Summary
Development of the distributed power systems based on renewable energy sources (RES) requires more and more converters of various types and capacities. Number of installed power electronics converters definitely will increase together with the process of microgrids development. Microgrids mostly are designed for the more concentrated integration of the small-scale RES-based distributed power plants where every power source or power storage system usually has its own grid-tied inverter. Big number and considerable cumulative capacity of the power electronic conversion systems which include grid inverters operating in the local distribution grid may have negative aspects on quality of the power parameters [1]. Additional power electronic equipment is necessary in some cases for feeding of loads, which are sensitive to the voltage distortion of the power source [2]
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