Specifics of running dynamics and energy diagrams of a pulse electromagnetic drive with shunt- and cascade-connected excitation windings

The research performed is actual because it is necessary to improve methods of calculations of rapid dynamic processes in electrical units. The object of research is the construction of a two-mass technological vibration unit with electromagnetic excitation. The subject of research is the method of calculation based on the created simulation model of the vibration unit dynamic cha-racteristics in transient and stationary modes with respect to a form and frequency of the source voltage. The mathematical model is based on non-linear differential equations of the electrical and mechanical balance. The main objective of research is the development of a simulation model of a two-mass technological vibration unit with electromagnetic excitation using modern methods of computer simulation. The example of the numerical implementation of the mathematical model by structural modeling methods in the Matlab Simulink is considered and the computer model of the electromagnetic vibration unit is created. The examples of the calculation of dynamical cha-racteristics of electromagnetic vibration unit for the analysis of electromechanical processes in transient and stationary modes are presented. Some of calculated values of integral indicators describing conversion processes of electric energy consumed from a power supply are given. The proposed simulation model of a technological vibration unit can be used to calculate rapid dyna-mic processes in different modes to provide a rational choice of vibration unit parameters when it is designed. The model is also useful for the analysis and synthesis of automatic systems to control the supplied voltage amplitude, frequency and form. The results of the research can be of particular interest to specialists in the area of machine strength dynamics and vibration protection.

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Section: Introductionunclassified

Development of an imitation model of a two-mass technological vibratory unit with electromagnetic excitation

Neyman¹,

Neyman²,

Markov³

et al. 2022

Proceedings of the RHEAS

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“…Вариации сопротивления и индуктивности якоря практически не оказывают влияния на ток, как было показано выше, однако вызывают дополнительное движение относительно скорости вращения ω. Соответствующие графики для тока якоря и скорости вращения показаны на рис. 5 [11,12,13,14] и аппарат теории чувствительности для анализа динамических свойств ЭМП при случайных параметрических возмущениях является предпочтительным [15]. В инженерной практике для анализа статистических характеристик особое значение имеет гипотеза о нормальном (гауссовском) распределении отклонений параметров [16].…”

Section: Introductionunclassified

Features of application of sensitivity theory for analysis of influence of parametric disturbances on dynamic properties electromechanical converters

Малёв

Погодицкий

Цветкович³

2020

«Izvestiya vysshikh uchebnykh zavedenii. PROBLEMY ENERGETIKI»

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1 Казанский государственный энергетический университет, г. Казань, Россия 2 АО «Татэнерго», г. Казань, Россия maleeev@mail.ru Резюме: На этапе проектирования и испытаний электромеханических преобразователей актуальным является анализ влияния параметрических возмущений на динамические свойства объекта с применением теории чувствительности, которая позволяет оценить качество работы машин в зависимости от условий эксплуатации. На основании системы дифференциальных уравнений электромеханического преобразователя постоянного тока получены уравнения чувствительности соответствующих координат по трем параметрам. Сформирована векторная структурная схема модели чувствительности, а также Simulink-модель, с помощью которой проведено моделирование и получены графики функций чувствительности, определяющие дополнительное движение объекта исследования при изменении параметров в заданных пределах. Показано, что наибольшие установившиеся значения функций чувствительности соответствуют изменениям момента инерции и влияние момента инерции на координаты объекта исследования является наиболее значительным. При этом наиболее чувствительной к вариациям параметров координатой является скорость вращения электромеханического преобразователя. Также решена задача статистического анализа погрешностей выходных координат электромеханического преобразователя в предположении нормального распределения параметрических возмущений. Проведено моделирование с вычислением дисперсий и относительных оценок влияния варьируемых параметров и получены графики, позволяющие оценить степень влияния параметрических возмущений. Ключевые слова: электромеханический преобразователь, параметрические возмущения, анализ динамических свойств, модель чувствительности. Для цитирования: Малёв Н.А., Погодицкий О.В., Цветкович А.М. Особенности применения теории чувствительности для анализа влияния параметрических возмущений на динамические свойства электромеханических преобразователей // Известия высших учебных заведений. Abstract: At the design and testing stage of electromechanical converters, the analysis of the influence of parametric perturbations on the dynamic properties of an object using sensitivity theory, which allows to evaluate the quality of operation of electrical machines depending on operating conditions, is relevant. Based on the system of differential equations of a DC motor, the sensitivity equations of the corresponding coordinates were obtained in three parameters. A vector structural scheme of the sensitivity model has been formed, as well as the Simulink-model, with the help of which sensitivity function plots were obtained, which determine the additional motion of the object of study when parameters change within specified limits. It is shown that the largest steady-state values of the sensitivity functions correspond to changes in the moment of inertia. It is revealed that the influence of the moment of inertia on the coordinates of the object of study is the 109 18. Pradeep Kumar, Mandeep Kumar, Surender Dahiya. Sensor Less Speed Control of PMSM usi...

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“…Linear pulsed electromechanical converters are designed to provide high speed of the actuating element (AE) on a short active section, and/or to create shock force pulses [1][2][3][4]. Such converters are used in many branches of science and technology as electromechanical accelerators and shock-power devices [5][6][7]. The most widely used are linear pulse-induction electromechanical converters (LPIEC) of a coaxial configuration in which the accelerated electrically conductive armature interacts non-contact with a stationary inductor [1,2,8].…”

mentioning

confidence: 99%

Electromechanical Processes in a Linear Pulse-Induction Electromechanical Converter With a Movable Inductor and Two Armatures

Bolyukh¹,

Kocherga²,

Schukin³

2018

Elektroteh. elektromeh.

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Purpose. The purpose of the paper is to determine the influence of the height of the mobile and stationary disk electrically conductive armatures covering the movable inductor on the electromechanical processes of linear pulsed-induction electromechanical converter (LPIEC). Methodology. With the help of the developed mathematical model that describes electromechanical and thermal processes of LPIEC, the influence of the heights of the armatures on electromechanical processes, the values of the electrodynamic forces acting on the inductor and armature, and the moving speed of the movable armature (MA) is established. Results. It is shown that if the height of the stationary armature (SA) is twice the height of the MA, then the inductor at the initial instant of time is acted upon by electrodynamics forces pressing it to the SA, and the displacement of the inductor begins with a delay of 0.35 ms. If the height of the MA is twice the height of the SA, then the electrodynamics forces act on the inductor at the initial instant of time, repelling it from the SA, and its movement begins with a delay of 0.1 ms. If the heights of the SA and the MA are equal, then until the time 0.15 ms on the inductor, the electrodynamics forces practically do not act and the inductor moving relative to the SA begins with a delay of 0.25 ms. Originality. The effect of the geometric parameters of the SA and MA on the velocity of the inductor moving relative to the SA, MA relative to the inductor and the MA relative to the SA is established. It has been established that the highest velocity of the MA relative to the SA develops the lowest MA, and the height of the SA does not affect it practically. However, with the increase in the height of the MA, the effect of SA begins to affect. In this case, it is expedient to select the height of the SA to be 0.4-0.42 of the height of the inductor. Practical value. It is shown that as the weight of the actuating element increases, the currents in the active elements of the LPIEC increase, the induction velocities of the inductor relative to the SA and the MA decrease relative to the inductor. At the same time, the maximum the electrodynamic forces values acting on the inductor decrease, and the armatures increase. Moreover, the maximum the electrodynamic forces acting on the MA are less than similar forces acting on the SA. References 12, figures 7.

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Specifics of running dynamics and energy diagrams of a pulse electromagnetic drive with shunt- and cascade-connected excitation windings

Cited by 7 publications

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Development of an imitation model of a two-mass technological vibratory unit with electromagnetic excitation

Development of an imitation model of a two-mass technological vibratory unit with electromagnetic excitation

Features of application of sensitivity theory for analysis of influence of parametric disturbances on dynamic properties electromechanical converters

Electromechanical Processes in a Linear Pulse-Induction Electromechanical Converter With a Movable Inductor and Two Armatures

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