Multivariable controller for a novel topology of double-input converter applied in distributed hybrid photovoltaic/wind power system.

Regulating the voltage of distributed renewable power systems is a main technical problem of power system controllers. This paper proposes a new method to design the controller of double-input direct current-direct current converters which are applied in hybrid renewable power systems. In addition, in this research, the converter has novel topology and can be used to obtain well-regulated output voltage from 2 renewable energy sources, and the suggested structure has important advantages compared with previous ones. The operating principle and design criteria of the designed converter are provided. Furthermore, the conventional controllers cannot set the voltage of hybrid power systems at some critical situations. At the other part, on the basis of the multivariable control strategy, an efficient controller for the converter is designed. In the last part, on the basis of simulation study and several experiments, converter performance in different conditions is analyzed and the efficiency of the designed converter and multivariable controller is approved. [ABSTRACT FROM AUTHOR]