Indirect field-oriented control of twin-screw electromechanical hydrolyzer

Zablodskiy, Mykola; Pliuhin, Vladyslav; Kovalchuk, Stanislav; Teterev, Vitaliy

doi:10.20998/2074-272x.2022.1.01

Cited by 9 publications

(4 citation statements)

References 10 publications

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“…When using generalized and reduced spatial coordinates to obtain real processes, it is necessary to use coordinate converters. In the general case, the transition of the position coordinate from one orthogonal system to another is carried out according to the following formulas [32]:…”

Section: Theoretical Basismentioning

confidence: 99%

Electromechanical Energy Converter Imitation Model in SciLab

Tsegelnyk,

Pliuhin,

Tietieriev

et al. 2022

LEPE

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The paper shows the implementation of simulation models of an electromechanical energy converter on the example of an induction motor with a squirrel-cage rotor in the SciLab environment and its graphic library Xcos for building structural diagrams. Despite the existence of simulation programs such as Simulink and ANSYS Twin Builder, SciLab is completely free, which is an advantage for use in an academic environment and in scientific research. Despite SciLab being free and significantly different from existing paid software, this program allows to create complex models and has a powerful built-in programming language. This paper shows how, using SciLab blocks, to build a simulation model of an induction motor with a squirrel-cage rotor, based on the differential equations of electromagnetic transients. The construction of models for the mode of direct start from a source of stable three-phase power supply is considered. An example of a code program in SciLab for determining the parameters of an induction motor with a squirrel-cage rotor, necessary for simulation, only from the motor rated data, is shown separately. The work will be useful to researchers who intend to use free software to solve complex problems.

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Section: Theoretical Basismentioning

confidence: 99%

Electromechanical Energy Converter Imitation Model in SciLab

Tsegelnyk,

Pliuhin,

Tietieriev

et al. 2022

LEPE

Self Cite

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“…This paper deals with simulation modeling in the ANSYS Twin Builder program of an atypical electric machine, or rather a unit -a multifunctional energy converter (MFEC) of a screw type, which is designed for mixing, drying and transportation of loose materials, such as grain, coal slurry, concentrates for manufacturing fuel briquettes [1][2][3][4]. The MFEC consists of rigidly connected induction motors with an external hollow ferromagnetic (solid) rotor, on the surface of which the turns of the screw are welded.…”

Section: Introductionmentioning

confidence: 99%

“…In previous modifications of the MFEC, two stators were mounted on a common shaft, and the rotor tube was common to the stators [1][2][3][4]. Power was supplied to the stators from a thyristor voltage regulator in a different order of alternating phases, thus, one of the stators worked in the driving mode, and the second one -in the braking mode by reverse switching [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Simulation Model of Double Motors Screw Unit with a Solid Rotor in ANSYS Twin Builder

Pliuhin,

Tsegelnyk,

Trubai

2023

LEPE

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This article is devoted to solving the problem of simulation modeling of the electric drive system of two induction machines with an external solid rotor, rigidly connected to each other. This design is due to research aimed at optimizing mechanical characteristics and increasing the stability of the mixing regime of mixtures of loose materials of different dispersions using a multifunctional screw-type energy converter (MFEC). The task presents difficulties from the point of view of ensuring the productivity of drying wet loose material. On the one hand, in order to ensure a given percentage of moisture reduction during its advancement along the surface of the screw, it is necessary to have a low speed of rotation of the rotor to increase the contact time of the material with the hot surface of the rotor. On the other hand, reducing the rotation speed of the rotor reduces the intensity of its heating, which negatively affects the performance of the unit as a whole. A third challenge is to provide high torque at low rotational speed to prevent high-density material from buckling. In the previous publications of the authors, a study was conducted to solve such problems due to a specific combination of motor and brake modules of the auger, but such an approach did not give positive results. Solving the specified problems is possible due to the reproduction of such a complex electromechanical system and electric drive system in the ANSYS Twin Builder software. The article shows a detailed vector field-oriented control (FOC) system applied to two modules of the screw unit. Each of the modules represents a reduced-order model (ROM) that works in coupling simulation with the electromechanical processes in ANSYS Twin Builder. This paper will be useful both for specialists in the field of electric drive and for researchers who are engaged in the development of digital twins of complex systems.

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“…In connection with the lack of a complex of mathematical models of induction machines with a solid rotor, and even more so multifunctional energy converters (MFEC) of the screw type operating in the environment of bulk or viscous materials [1,2], there is a logical need to create a general approach in the compilation of mathematical models and methods of calculation of induction machines, mainly with an external hollow solid rotor. The peculiarity of such a mathematical description is that the MFEC is considered in connection with the thermal and hydrodynamic processes of the environment, and the output characteristics are determined by the target function of the device: along with the mechanical and thermal dependences of the heating of the MFEC nodes and the environment [3]. MFEC refers to complex energy converters, in which the electromechanical conversion of energy is accompanied by the conversion of electrical Ре or mechanical energy Рmeh into thermal Рt.…”

Section: Introductionmentioning

confidence: 99%

Design Methodology of a Multifunctional Screw-Type Energy Converter

Petrenko,

Pliuhin

2023

LEPE

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This paper examines the method of designing a non-standard electric machine – a three-phase induction motor with a hollow solid rotor, on the surface of which the turns of the screw are located. Such an unusual design makes it possible to turn the main disadvantage of induction machines with a solid rotor, namely the heating of the rotor due to the effect of eddy currents, into an advantage. The heat from the rotor is transferred to the bulk material, which is mixed by the screw, for drying and reducing the moisture content. At the same time, only one device is used to perform three functions - mixing, drying, transportation of bulk material, which, due to the specified functional features, was called a multifunctional energy converter (MEC). The MFEC design method differs from conventional machines, because it takes into account the peculiarities of determining the parameters of a number of typical methods: an induction motor with a squirrel-cage rotor, an induction motor with a solid internal rotor, and an inductor. In the previous publications of the authors, the complex methodology of designing an induction motor with an external solid rotor was considered in detail, however, in view of the additional theoretical and experimental studies conducted, it needs to be clarified and adjusted. In addition, in this paper, the beginning of the design, the determination of the initial data and the main dimensions of the MFEC is performed in a different way. In particular, the overall dimensions of the MFEC are determined not by the sum of power spent on heating and mixing the material and internal losses in an induction machine (considering the efficiency and power factor), but by the required performance of the unit and the limit dimensions of the installation area. The paper proposes a new approach to determining the dimensions of the stator slot, considering the necessary area for the placement of conductors and the current density in the winding. This paper is one of several publications that aim to reveal the features of design and mathematical modeling of such an atypical class of electric machines as an induction motor with an external hollow solid rotor.

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Indirect field-oriented control of twin-screw electromechanical hydrolyzer

Cited by 9 publications

References 10 publications

Electromechanical Energy Converter Imitation Model in SciLab

Electromechanical Energy Converter Imitation Model in SciLab

Simulation Model of Double Motors Screw Unit with a Solid Rotor in ANSYS Twin Builder

Design Methodology of a Multifunctional Screw-Type Energy Converter

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