Analysis of parameters disorders influence on operating mode of multimodular inverters

Аuthors

Voronina L. N.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

e-mail: Luda-voronina@mail.ru

Abstract

The parallel work of single-phase current-controlled inverters and the way for maintenance the uniform current distribution between them is considered in the paper. The purpose of work consists in the elimination of disorders influence of inverters components while they perform in-parallel.
Structural, functional and technical decisions for maintenance the uniform current distribution in inverters have been developed while some methods of electric circuit theory, theories automatic operation, differential and integrated calculations and the concept of multichannel transformation of a power stream were used. Mathematical research of working processes in inverters working in-parallel was spent by means of imitating computer modeling in OrCAD environment.
The computer model of in parallel connected current-controlled inverters has been developed and nominal and emergency modes of their work are considered. On the basis of computer modeling, the analysis and check of working capacity of the offered method for maintenance the uniform current distribution are led; its comparative efficiency is described.
The results received during work have practical value. The developed computer models of single-phase converters allow to reduce time for research and analysis of working processes taken place in the devices. The offered way solves one of the basic problems arising at designing of multimodular inverters — uniform current distribution to loading simultaneously with the safety of converters work in emergency operation raises. The given method could raise quality of the electric power acting to the consumer.

Keywords:

distribution of currents, current-mode control, the multimodular inverter, disorder of parameters

References

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