scholarly journals Modeling the system of a dovetailless asynchronous electric drive for conveyor mechanisms

2022 ◽  
Vol 1211 (1) ◽  
pp. 012014
Author(s):  
Vladimir Vladimirovich Pikalov ◽  
Andrei Igorevich Boikov ◽  
Andrei Vitalievich Sdvizkov ◽  
Pavel Sergeevich Ponomarev
Keyword(s):  
Computer Simulation ◽  
Control System ◽  
Electric Drive ◽  
Adaptive Observer ◽  
Integral Criterion ◽  
Advantages And Disadvantages ◽  
Asynchronous Electric Drive ◽  
Belt Conveyors ◽  
Vector Control System ◽  
Parametric Robustness

Abstract The article considers a vector control system for asynchronous electric drive of belt conveyors, which uses an adaptive observer to control the speed of the electric drive. This allows you to increase the reliability and inter-interval maintenance of the electric drive. The requirements for the observer are determined, its mathematical description is made, and the law of adaptation is determined. In the Matlab Simulink package, a computer simulation of the proposed sensor-free control system is performed. A study of the robustness of the actuator in terms of the drift of the parameters of the motor when powered from the inverter, expressed by the integral criterion for parametric robustness. Based on the results obtained, a comparison is made and conclusions are drawn about the advantages and disadvantages of using an adaptive observer in comparison with other types of observers.

scholarly journals Vector control system of electric drive of grain machine conveyor

2021 ◽  
pp. 8-16
Author(s):  
Evgeniia Burdilna ◽  
Sergii Serhiienko ◽  
Oleksiy Chornyi
Keyword(s):  
Control System ◽  
Vector Control ◽  
Quality Indicators ◽  
Electric Drive ◽  
Frequency Converter ◽  
Regulation System ◽  
Speed Reduction ◽  
Idle Speed ◽  
Asynchronous Electric Drive ◽  
Vector Control System

Purpose. Synthesis of an automatic control system for an asynchronous electric drive of a grain thrower conveyor based on a frequency converter with vector control. Methodology. The research was carried out using methods of mathematical modeling of an electric drive; using methods of tuning optimization and regulator synthesis. The technique of synthesis of vector control systems is based on the representation of a non-stationary multi-connected object, which is an AC machine, in the form of a set of stationary subobjects with linear links in the main control channels. Findings. The study of the work of the subordinate regulation system, which implements the principles of vector control, oriented along the vector of the rotor flux linkage, has been carried out. The modeling of the processes of AM excitation, AM start-up at idle speed, nominal load surge, speed reduction has been carried out. It was found that the synthesized system is characterized by good quality indicators. The overshoot at start does not exceed 5%, the regulation time is 0.4 s, the torque limitation is carried out at a predetermined level. It has been proven that oscillatory processes in transient modes with significant torque surges with classical settings of loop regulators can be compensated by introducing artificial cross-links into the control part of the electric drive. Originality. A system of subordinate regulation of the blood pressure of the grain thrower trimmer conveyor has been implemented to set the speed of the grain flow with the aim of throwing grain at a given distance by creating an appropriate ballistic flight trajectory, which ensures a reduction in losses from damage to grain. Practical value. The structure of the vector control system of a frequency-controlled asynchronous electric drive with additional compensating cross-connections between active and reactive energy control channels is proposed to improve the quality indicators of the system.

DEVELOPMENT OF ASYNCHRONOUS ELECTRIC DRIVE WITH SCALAR CONTROL

2019 ◽  
Author(s):  
Igor' Polyuschenkov
Keyword(s):  
Control System ◽  
Electric Drive ◽  
Microprocessor Control ◽  
Programming Technique ◽  
Scalar Control ◽  
Model Based ◽  
Asynchronous Electric Drive ◽  
Microprocessor Control System ◽  
Software And Hardware ◽  
Technical Solutions

The materials on the development of asynchronous electric drive with scalar control are given. The technical solutions associated with the design of software and hardware parts of the microprocessor control system are described. When developed, tools of model-based programming technique are used.

scholarly journals Sensorless vector control of a permanent magnet synchronous motor

2019 ◽  
Vol 91 ◽  
pp. 01007 ◽  
Author(s):  
Ruslan Zhiligotov ◽  
Vyacheslav Shestakov ◽  
Vladymyr Sosnin ◽  
Evgeniy Popkov
Keyword(s):  
Control System ◽  
Vector Control ◽  
Permanent Magnets ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Adaptive Observer ◽  
Current Position ◽  
Sensorless Vector Control ◽  
Common Control ◽  
Vector Control System

The most common control system for a synchronous motor with permanent magnets is a vector control system. The construction of such a system has a number of difficulties, one of them is the need to have information about the current position of the rotor. Data on the position of the rotor can be obtained using sensors, or include a supervisor in the control system. The article describes an adaptive observer of the position and speed of the rotor of a synchronous motor with permanent magnets. This observer is used in the system of sensorless vector control of the electric drive. The presented version of the observer of the engine state is realized by creating a model in the Matlab Simulink software package. The results of experimental verification of the presented observer at the stand with the use of an engine with a power of 200 W are shown. The aim of the work is to develop an observer that is stable to changing drive parameters. This is achieved by using a relay unit in the view of the observer, which implements the slip mode.

scholarly journals Computer model of electric drive of 1L100K conveying unit

2019 ◽  
Vol 134 ◽  
pp. 01012
Author(s):  
Denis Zolkin ◽  
Vadim Petrov
Keyword(s):  
Control System ◽  
Electric Drive ◽  
Ring System ◽  
Vibration Damping ◽  
Electromechanical System ◽  
Dynamic Loads ◽  
Belt Conveyor ◽  
Electric Drives ◽  
Belt Conveyors ◽  
Elastic Elements

The paper deals with the problems of vibration damping and limiting dynamic loads in the electromechanical system of a belt conveyor by means of an adjustable electric drive. A conveying unit is represented as a three-mass ring system, which corresponds to a conveying unit with cinematically closed tape. The development of the structure of the control system for electric drives of belt conveyors with limited dynamic loads in elastic elements will reduce the dynamic loads on the belt and therefore the wear of the belts. Conditions of damping of oscillations in electromechanical system of belt conveyors are defined.

scholarly journals Control system for a frequency synchronized asynchronous electric drive

2021 ◽  
Vol 23 (3) ◽  
pp. 131-141
Author(s):  
V. N. Meshcheryakov ◽  
D. S. Sibirtsev ◽  
S. Valtchev ◽  
E. I. Gracheva
Keyword(s):  
Energy Efficiency ◽  
Control System ◽  
Electric Drive ◽  
Frequency Control ◽  
Frequency Converter ◽  
Mutual Orientation ◽  
Asynchronous Electric Drive ◽  
In Series ◽  
Output Characteristics ◽  
Rotor Winding

THE PURPOSE. In controlled AC drives used on continuous-action mechanisms, which include conveyors, conveyors, cranes, the most widespread are asynchronous motors with a phase rotor, controlled mainly along the rotor circuit using various regulators with low energy efficiency. To improve the energy efficiency of an electric drive based on ADFR, it is proposed to develop a control system that combines the principles of frequency control of the motor along the stator circuit and powering the rotor circuit with constant voltage, which allows the electric drive to be considered synchronized. METHODS. The presence of a DC link in the frequency converter makes it possible in principle to connect the rotor winding in series to this link. However, in order to ensure the frequency principle of regulating the output characteristics of the electric drive, it will be necessary to regulate the rectified current at the input of the inverter and, accordingly, in the rotor windings, which will require a significant change in the standard control system of the frequency converter. The use of an additional adjustable switch in the DC link is proposed. RESULTS. The study of the proposed non-standard control system for a frequency asynchronous synchronized electric drive was carried out by the method of simulation modeling in the Matlab Simulink software package. CONCLUSION. A control system for a frequency asynchronous synchronized electric drive has been developed and investigated on a computer model. A correction system is proposed that allows maintaining a constant value of the load angle in the starting mode. The scalar system of relay frequency control of the electric drive is supplemented with vector correction of the variables, which makes it possible to continuously provide the necessary mutual orientation of the stator current vectors and the rotor flux linkage.

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