Универсальный метод обоснованного выбора технических решений активной части электрических машин и аппаратов

Abstract

Приведены базисные уравнения и порядок составления оптимизационных математических моделей трансформаторов, реакторов и асинхронных двигателей на основе метода целевых функций с безразмерными показателями технического уровня и относительными управляемыми переменными. Представлены результаты оптимизационного сопоставления показателей массы, стоимости и потерь вариантов трехфазных статических электромагнитных систем и короткозамкнутых асинхронных двигателей с цилиндрическим зазором, внутренним и внешним положением роторов, а также аксиальным зазором.

The process of electromagnetic and electromechanical energy conversion is possible using a different structure variants of electromagnetic systems (radial, axial, with internal or external rotor ...). It is also one of the improvement directions of electrical machinery and apparatus is to change the design and configuration of active part elements. Therefore, it is of interest to solving optimization comparing problems of different variants of newly designed electro-mechanical device. These variants should provide the maximum increase in the technical level, while ensuring the specified requirements. To solve these problems a method of target functions with optimizing dimensionless components of the particular criteria and relative controlled variables is developed. The dimensionless components extremes are the technical level indicators of electromechanical device. The main indicators are the minimum of mass, cost and active power losses of electromagnetic system. Comparative analysis of the technical level indicators of the active part variants is performed under the conditions of equality of electromagnetic power, as well as the identity of assignments, performances and ways of cooling. In the work the sequence of optimization mathematical models development by theprivate and integral criteria of three-phase transformers and reactors and induction motors called method is shown. The results of optimization comparative analysis of the main technical level indicators of three-phase planar and spatial axial and radial static electromagnetic systems variants are given. In addition, the results of a comparison of squirrel cage motors with internal and external position of rotors and axial working gap are given.