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Метод определения времени пуска асинхронных электродвигателей при управлении резисторно-тиристорными модулями

Метод определения времени пуска асинхронных электродвигателей при управлении резисторно-тиристорными модулями

Abstract

Purpose. An electric general-purpose drive with asynchronous motor is proposed. For motor control in stator and rotor, circuits used resistors and thyristors. These elements included together in various ways. This allows to get a variety of power converter circuit with resistor-thyristor modules. Methodology. Taking into account the technical requirements for industrial machinery developed an analytical method for determining the run-up controlled induction motor. Formed starting modes by changing the value of the equivalent resistor-thyristor modules. Using logic synthesis and function of thyristors switching to determine the equivalent value of resistor-thyristor modules. Scientific novelty. It lies in the fact that the proposed method of calculation to determine the run-up in the limited amount of transient current and torque of the motor. The total moment of inertia and the static moment of the drive do not have a significant impact on the maximum value of the transient electromagnetic torque. Most of these options affect the transition process, the oscillation frequency of the electromagnetic torque and the motor speed. Practical value. The method used for calculating allows to select the simplest laws of launch control actuator and apply open-loop control system without increasing the cost of the power converter, so it is of practical importance.

Предложен электропривод, который содержит асинхронный двигатель, в статорных и роторных цепях которого для управления используются резисторы и тиристоры, включенные между собой разными способами, образуя разнообразие силовых схем преобразователей с резисторно-тиристорными модулями. Разработан аналитический метод определения время разбега асинхронного электропривода. Даны рекомендации для проектирования и внедрения в различные механизмы и агрегаты указанных электроприводов. Научная новизна заключается в том, что предложенный метод расчета позволяет определить время разбега и торможения при ограничении величин переходных токов и моментов электродвигателя. Установлено, что суммарный момент инерции и статический момент электропривода не оказывают существенного влияния на максимальное значение переходного электромагнитного момента. Больше всего эти параметры влияют на время переходного процесса, частоту колебаний электромагнитного момента и скорость вращения электродвигателя. Используемый метод расчета позволяет выбрать наиболее простые законы управления пуском электропривода и применить разомкнутую систему управления без увеличения стоимости силового преобразователя.

Keywords

АСИНХРОННЫЙ ЭЛЕКТРОДВИГАТЕЛЬ, РЕЗИСТОРНО-ТИРИСТОРНЫЙ МОДУЛЬ, ПУСК, РЕГУЛИРОВАНИЕ УГЛА ОТКРЫВАНИЯ ТИРИСТОРА, МОМЕНТ ИНЕРЦИИ, СТАТИЧЕСКИЙ МОМЕНТ

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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