The paper considers issues of increasing efficiency of multilevel power converter based on IGCT and IGBT modules to improve energy performance by compensating reactive power in electric networks. By the example of a local power grid using SEMIS SimulationTool design tool the results of calculations of variants of multilevel converters with IGCT and IGBT are presented. The study of possibilities to increase the efficiency of multilevel power converters (MPE) for reactive power compensation (RPC) in local electrical networks (LES) on the basis of plenipotentiary controlled semiconductor cells is of particular interest, because the efficiency of network operation is insufficient, especially in changing load modes with large electric power losses (PEM). And from these positions, one of the most effective tools are fast controlled (PFC) systems. For this purpose, research has been carried out to obtain the best results. Used in calculations tool and methodology are certified software products and algorithms of ABB-SEMIS Simulation Tool computer design.

The article considers issues related to the modernization of energy technologies. To increase the efficiency of energy resources, operational reliability, loss reduction and environmental safety, the possibilities of trigeneration using fuel cells, hydrogen technologies and RES components, which is expedient to use for the production of additional electricity, are considered. The possibilities of innovative energy components for their integration into traditional power generation systems are shown, simulation schemes and calculation results are given. Modernization of the technological scheme of the traditional industrial thermal power system (ITPS), such as CHP type, to increase its efficiency to 55–65 %. Figure 1 shows the structure of the integrated system, which provides efficiency up to 55 to 65 %. In this integrated system, which makes full use of the available RES resources and other components adopted in the scheme in the figure, the increase in efficiency is achieved through two new factors: a more flexible, intelligent control of the flow of electric energy through the introduction of a new digital smart block «Flexible Electricity» and a new additional technological connection from this block to the block «Mobility», which carries out an effective supply of electric energy of all available mobile devices ITPS.