Novsky V. Stabilization of parameters of electric energy in the three-phase systems by means of semiconductor correcting devices.

Object of research: electromagnetic processes in the three-phase systems with asymmetrical non-stationary and nonlinear elements connecting of which to the electric network is worsened by quality of electric power and violates the terms of providing EMС. The purpose of research: development of theory of effective inverter devices for providing of electromagnetic compatibility and upgrading of electric power in the three-phase systems with asymmetrical non-stationary and nonlinear electro-receivers, development of new principles of construction of semiconductor devices for the fast-acting stabilizing of parameters of electric energy, and creation on this basis of multifunction correcting devices. Methods of research: at the decision of tasks of dissertation the methods of mathematical and imitation design, methods of decision of differential and algebraic equalizations, were used; classic methods of analysis of многофазных electric chains are in phase and symmetric co-ordinates; theory of electric chains; methods of harmonic analysis and synthesis, and also interconnect (make-and-break) functions; theoretical positions validified by laboratory and model experimental researches, and also results of experienced-industrial exploitation of the worked out transformers. Theoretical and practical results: in dissertation work the theory of semiconductor devices of the fast-acting stabilizing of parameters of electric energy got further development in the three-phase systems with asymmetrical non-stationary and nonlinear electro-receivers. The got results in an aggregate are theoretical generalization and decision of the important for an electroenergy scientifically-applied problem of improvement of quality of electric power and providing EMS on the basis of application of the worked out multifunction correcting transformers with enhanceable dynamic and power indexes. Degree of introduction: basic job performances are inculcated on manufacturing firm: "Charkivenergo", "Lvivenergo", "Crimeaenergo", "Salute", "Darnizkiy railway-carriage repair works", "Kyiv electric railway-carriage repair works" "Ukrzalizprom", railway-carriage repair works of "Kyiv subway"; test center "Omega". Sphere of use: power supply electricity supplied by public distribution networks with the nonlinear and asymmetrical loading.