Some Aspects of Electric Power Equipment Modelling through Sustainability Key Concepts

摘要

Enhancements are made to the concept that technical systems and processes involving energy conversion, and particularly electric power equipment, need to be linked to environment engineering, since the concept of sustainable development should emphasize two complementary aspects. The first is related to the design of electrical equipment, in order to achieve high energy efficiency during all life stages of a system, and the second takes into consideration the environmental impact of technical systems operation, since biological ecosystems generally are not free of anthropogenic influences. These are the reasons that, over the last few decades, international legislation has required environmental impact assessment to be carried out for all phases of the life electrical equipment, according to Life Cycle Assessment, which includes the production, use and end-of-life phases. Following the notion that Nature demonstrates sustainable energy conversion, this work focuses on highlighting that industrial ecology permits an alternate view of anthropogenic applications, related both to technical and environmental reference systems. The study addresses some aspects, using energy conversion processes during the operation of power transformers and induction motors as modeling examples of sustainable electric equipment. Based on the model equations, this article presents the structural diagrams method, as a modeling method for a three-phase electric transformer and induction motor in dynamic regimes, according to an ecosystem pattern. The overall objective is to enhance understanding of how anthropogenic activities can be viewed in concert with the entire system on Earth.