Algorithm Optimization of Repair and Modernization of Asynchronous Motors with Energy Efficiency Class

Abstract

It is shown that increasing the energy efficiency class of asynchronous motors in European countries attained an increase in weight of active material. This increases the cost of electric motors. In the Russian Federation the highest energy efficiency class of asynchronous motors is achieved not by increasing the weight of active material, as is common among European manufacturers, but due to the redistribution of mass of copper single-phase stator winding two-phase winding and the use of small-sized device compensating - regulated three-phase capacitor capacitance. To create energy-efficient electric motors developed mathematical models, algorithms and programs for calculation and optimization of the cost of major repairs of asynchronous motors with energy efficiency class standard IEG60034-30. The technique bases on the account of repair and modernization of asynchronous motors manufacturing operations. We consider the process steps of the traditional maintenance and repair of technological operations with energy efficiency classes of asynchronous motors. Mathematical models calculate labor costs and the cost of material resources. Mathematical models contain parameters: the nominal data of the repaired engine; dimensions of the magnetic system of the electric machine; coil type; groove shape; staffing the repair site; qualified maintenance personnel; the cost of working time; the duration of technological operations; costs of material resources and their price; Expense ratios. The calculation results are presented to the user on labor and material costs for each processing operation and repairs as a whole in the form of tables and diagrams. The development allows to prove the feasibility of the modernization of traditional asynchronous motor asynchronous motor with individual compensation of reactive power high energy class energy efficiency and to carry out optimization of its creation costs. The software package is recommended to professionals and Electromachine electrorepair enterprises.