Identification of the active resistances of the stator of an induction motor with stator windings dissymmetry

Tytiuk, Valerii; Pozigun, Oleksandr; Chornyi, Oleksii; Berdai, Abdelmajid

doi:10.1109/mees.2017.8248949

Cited by 13 publications

(7 citation statements)

References 5 publications

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“…The regulation system uses gauges of thickness, tension and speed of movement of the rolled strip at the inlet and outlet of the rolling mill, as well as in the interclearances [15][16][17][18].…”

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

“…Fluctuations of the rolling mill rolls due to the presence of elastic elements (natural vibrations) have a decisive influence on the quality of the rolled products and are referred to as «vibrations». At the same time, in rolling mills, the frequencies of natural vibrations are in the range of 10-70 Hz [16][17][18].…”

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

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Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Kuznetsov

Nikitina

Bovdui

2020

Electrical Engineering &Amp; Electromechanics

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Aim. Improving of control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters based on structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty. Methodology. The method of structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty which improves control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters is developed. The method based on the multi-criteria game decision in which payoff vectors are dispersions of longitudinal thickness and tension of the rolled. The calculation of the payoff vector associated with modeling of the synthesized system with different input signals and for various values of the plant parameters for various modes of operation of the system. The multi criterion game solution is calculated based on particles multiswarm optimization algorithms. Results. The results of the structural-parametric synthesis of robust control by 740 three-stand cold rolling mills multi-motor electric drives are presented. Comparisons of the strip thickness and tension accuracy of the synthesized robust system with the existing system are completed. It is showed that the use of synthesized robust controllers allowed to improve strip thickness and tension accuracy and reduce the sensitivity of the system to changes of plant parameters in comparison with the existing system. Originality. For the first time the method of structural-parametric synthesis of robust control by rolling mills multi-motor electric drives with parametric uncertainty based on multi-criteria game decision and particles multiswarm optimization algorithms to improve the control accuracy by rolling strip thickness and tension and to reduce of sensitivity to changes of plant parameters is developed. Practical value. Practical recommendations on reasonable choice of the structure and parameters of robust control by 740 three-stand cold rolling mills multi-motor electric drives to improving of control accuracy by rolling strip thickness and tension and reducing of sensitivity to changes of plant parameters are given. References 20, figures 2.

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Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

Section: цель повышение точности регулирования толщины и натяжения пmentioning

confidence: 99%

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Kuznetsov

Nikitina

Bovdui

2020

Electrical Engineering &Amp; Electromechanics

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“…That problem is possible to be solved on the basis of the analysis of starting conditions of an induction motor [29]. The paper [30] proposes a universal method to determine active resistance of the phase of the alternating-current motor stator, according to which the resistance maybe calculated as the ratio of average values of integral functions of the supply voltage and phase current, where averaging is performed from the moment of energizing according to the function:…”

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confidence: 99%

Online-Identification of Electromagnetic Parameters of an Induction Motor

et al. 2020

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Incompliance of the settings of the system to control actual values of the parameters of a variable frequency induction electric drive may sometimes result in complete non-operability of a variable frequency electric drive as well as in the considerable reduction of the dynamic quality parameters. Such parameters as active rotor resistance, rotor inductance, and inductance of the magnetization circuit are available for the immediate measuring. They are not identified in terms of the acceptance tests, and the values presented in catalogues and reference books are calculated ones that may differ considerably from the real values of a certain machine. Despite constant studies by the researchers, a task to identify electromagnetic parameters of the equivalent circuit of an induction motor is still important and topical. The objective of the paper is to develop a method of online-identification of the electromagnetic parameters of an induction motor making it possible to implement accurate regulator adjustment of the frequency control system in terms of operational changes in the driving motor parameters. For the first time, the paper analyzes a steady mode of induction motor operation which does not apply T-network of the equivalent circuit of an induction motor. An approach has been proposed relying on the equation of an induction motor in three-phase fixed coordinate system obtained on the basis of the theory of generalized electromechanical converter.

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“…Paper [12] regards influence of time distributed energy consumption processes and depreciation of a directcurrent drive on the determination of an efficiency index of a starting sequence; feasibility to apply the simplified energy consump tion model with the concentrated parameters has been sub stantiated.…”

mentioning

confidence: 99%

“…As it has been proved by [12], the efficiency index of a starting sequence may be calculated using the simplified ex pression ( ) ( ) With the help of (1-8) expressions, Matlab/Simulink has implemented allpurpose subsystem to identify the start effi ciency index being invariant relative to a type of electric drive and a starting device type.…”

mentioning

confidence: 99%

Control of the start of high-powered electric drives with the optimization in terms of energy efficiency

Tytiuk¹,

Chornyi²,

Zachepa³

et al. 2020

Nauk. visn. nat. hirn. univ.

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coNtrol of the StArt of hIGh-PowereD electrIc DrIVeS wIth the oPtIMIzAtIoN IN terMS of eNerGy effIcIeNcyPurpose. To develop engineering solutions providing the improved energy efficiency of starters of highpowered electric drives through automatic selection of the best starting settings to increment its technicalandeconomic indices.Methodology. Developing a mathematical model to determine energy efficiency index of starting sequences which is invariant relative to the electric drive type as well as a design of the starter. Planning the experiments with the use of rotatable central com posite design. Analyzing extreme experimental search engine in terms of the mathematical model.findings. Implementation of a subsystem has been proposed to identify the integral value of expending resources as well as a cumulative effect of a starting sequence, its duration, and energy efficiency index. A variant of hardware implementation of the extreme search engine has been proposed to control the start of highpowered electric drives.originality. It has been defined that the proposed structure for a start control is an invariant one relative to the electric drive type and to a starter design. Availability of the unique global maximum of energy efficiency index, resulting from the controlling action and disturbing action, has been substantiated.Practical value. Alternatives for hardware implementation of devices to identify quantitative values of some of the components of expending resources of a starting sequence, integral cost estimate of expending resources and a cumulative start results, as well as its energy efficiency index have been formulated. A structural circuit of the extreme search engine to control start of highpow ered electric drives has been designed, providing performance within a region of maximum.

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Identification of the active resistances of the stator of an induction motor with stator windings dissymmetry

Cited by 13 publications

References 5 publications

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Structural-Parametric Synthesis of Rolling Mills Multi-Motor Electric Drives

Online-Identification of Electromagnetic Parameters of an Induction Motor

Control of the start of high-powered electric drives with the optimization in terms of energy efficiency

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