Methods and software for the selection of asynchronous motors, taking into account their technical characteristics in educational design

Abstract

Представлены подходы к расчёту и его результаты в части построения семейств механических, электромеханических иэнергетических характеристик асинхронных машин продолжительного режима, а такжеих Матлаб-моделей с учётом особенностей представления каталожных данных для глубокопазных и двухклеточных машин и ориентированных на уровень, доступный при курсовом и дипломном проектировании.In the paper extended problem statement for choosing an asynchronous motor of continuous modeis presented. Presents approaches to the calculation and its results in terms of building families of mechanical, electromechanical and power asynchronous machines of continuous mode,as well as their Matlab models, taking into account the features of the submission of catalog data for deep-cutting and two-cell machines and focused on the level available in course and degree design. Including, for example, the constructed mechanical characteristics of a deep-phase motor with current displacement with volt-frequency speed control down from nominal with a step of 20% in the presence of 20% preamplification at zero frequency, which is usually provided in the frequency converter, are shown. Also, Exel-calculations of a number of static and dynamic indicators of the quality of asynchronous machines, based on factory data for 30 series 4A machines. Estimated errors in the presentation of data in catalog tables. Particularly large were the deviations of the calculated values of the critical moment from its catalog values