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Introduction. A rotating magnetic field three-phase inductor designed for the technological processing of various substances is considered. The processing is carried out by ferromagnetic elements in the form of pieces of iron wire moving with a magnetic field. Problem. The control problem of the concentration of ferromagnetic elements in the working chamber of the inductor is solved. This is necessary in order to replenish the chamber in time with elements that wear out but without interrupting the processing.Methodology. The proposed control method consists in observing the current of the inductor stator winding, which is carried out during its operation and does not require intervention in the technological process of processing.Results.The theoretical substantiation of the method is given and a practical calculation evaluation of its adequacy is made on the example of a specific inductor. The theory and practice of the method are based on numerical calculations of the magnetic field, electromagnetic parameters and the angular characteristics of the inductor. Practical value.The practical use of the method is to automatically determine the time of reloading the chamber with ferromagnetic elements that are worn out during the inductor operation. This increases the performance of the inductor and eliminates its downtime., Представлен метод определения концентрации ферромагнитных элементов в рабочей камере индуктора вращающегося магнитного поля, предназначенного для технологической обработки различных веществ. Метод заключается в контроле тока обмотки статора индуктора и не требует вмешательства в технологический процесс обработки. Дано теоретическое обоснование метода и проведена практическая расчетная оценка его адекватности на примере конкретного индуктора. Теория и практика метода основаны на численных расчетах магнитного поля, электромагнитных параметров и угловых характеристик индуктора. Практическое использование метода заключается в определении времени дозагрузки камеры ферромагнитными элементами, которые истираются в процессе работы индуктора.

Introduction. A computational analysis of the characteristics of an inductor of a rotating magnetic field for technological purposes is presented. The design of its stator is borrowed from a three-phase induction motor. The cylindrical cavity inside the stator is occupied by a working chamber into which a granular or liquid processed substance is loaded. The processing is carried out with elongated ferromagnetic elements moving with a magnetic field. Problem. The purpose of the article is a study of the electromagnetic, phase, and energy characteristics of an inductor at its operation under load mode with a given voltage of the stator winding. Methodology. The study is performed on the basis of numerical calculations of the magnetic field, taking into account the anisotropy of the low-magnetic medium in the working chamber. Its discrete medium is represented homogeneous with different magnetic permeabilities on mutually perpendicular axes. The technique of transition from the results of the magnetic field calculation to the electric, magnetic, phase and energy parameters of the inductor is given. This is facilitated by the electrical equivalent circuit of the stator phase winding, the equilibrium equation of its electrical quantities, vector diagrams and an iterative method for determining the current at a given voltage. Results. Mutual dependencies of a number of inductor parameters are formed into a family of characteristics exhibiting its properties in an operating mode with a changing load. Characteristics include such quantities as magnetic flux linkage of the stator winding, its current and EMF, phase shifts between them, electromagnetic torque, expended and useful power and its losses, power factor and efficiency. In this article, a feature of this mode is the stability of the stator winding voltage in the inductor. This complements the earlier studies of the inductor in the mode with stabilization of the winding current, which allows to compare these options. On the example of a test sample of an inductor, a number of its characteristics are shown, vector diagrams of its electric and magnetic quantities illustrating their mutual phase shifts are given. Practical value. The presented technique for determining the electric and magnetic quantities of the inductor and their phase relationships, and also the shown family of characteristics can contribute to increasing the design efficiency and improving the inductors of the considered type. The developed technique has the universality property, as it is capable of displaying their various circuit and constructional design parameters., Представлен расчетный анализ характеристик индуктора вращающегося магнитного поля технологического назначения. Конструкция его статора заимствована у трехфазного асинхронного двигателя. Цилиндрическая полость внутри статора занята рабочей камерой, в которую загружается сыпучее или жидкое обрабатываемое вещество. Обработка происходит движущимися с магнитным полем продолговатыми ферромагнитными элементами. Изложена методика получения электрических, магнитных и энергетических величин индуктора, основанная на численно-полевых расчетах с учетом магнитной анизотропии среды, заполняющей рабочую камеру. Взаимные зависимости ряда величин сформированы в семейство характеристик, проявляющих его свойства в рабочем режиме. В данной статье его особенностью является стабильность напряжения обмотки статора индуктора. Это дополняет проведенные ранее исследования индуктора в режиме со стабилизацией тока обмотки, что позволяет сравнить такие варианты работы. На примере тестового образца индуктора показан ряд его характеристик, приведены векторные диаграммы электрических и магнитных величин, иллюстрирующие их взаимные фазовые смещения.