Development of control algorithms for magnetoelectric generator with axial magnetic flux and double stator based on mathematical modeling

Ostroverkhov, Мykola; Chumack, Vadim; Falchenko, Maksym; Kovalenko, Mykhailo

doi:10.15587/1729-4061.2022.267265

Cited by 3 publications

(5 citation statements)

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“…The use of a magnetic transmission, in contrast to [18,19], makes it possible to abandon the mechanical gear transmission. This will reduce the overall weight of the system and increase its reliability.…”

Section: Discussion Of Results Of Investigating Magnetic Transmission...mentioning

confidence: 99%

“…The data given in Table 1 are used to build a numerical simulation mathematical model and are given in more detail in [18].…”

Section: Table 1 Main Parameters Of the Magnetic Transmission Under S...mentioning

confidence: 99%

“…The stiffness of the wind turbine drive is assumed to be infinite, and the friction coefficient and inertia of the turbine are agreed and implemented with the corresponding coefficients attached to the turbine. The output power on the wind turbine rotor shaft is given by the following equation [18]:…”

Section: Functional Diagram Of the System For Converting Wind Mechani...mentioning

confidence: 99%

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Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

Kovalenko,

Tkachuk

et al. 2024

EEJET

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The object of research is electromagnetic and mechanical processes in magnetic transmission for an autonomous wind power plant of small power. The use of magnetic transmission as part of an autonomous wind power plant makes it possible to improve the reliability and efficiency of such a system. In the current work, a study of magnetic transmission as part of an autonomous wind power plant was carried out to investigate the parameters and characteristics of magnetic transmission. This paper reports the construction of a numerical simulation mathematical model of a magnetic reducer operating as part of an autonomous wind power plant with a permanent magnet generator. The model takes into account discrete structure of internal and external rotors and modulator; changes in model parameters when input parameters change. It also takes into account losses, change of load angle and electromagnetic moment; the effect of changing the generator load. The built model of the magnetic reducer system differs in that the change in the generator load leads to a shift of the operating point on the mechanical characteristics of the rotor of the wind power plant (WPP). The model also works in the opposite direction: changes in wind parameters affect power, voltage, current, and electromagnetic moment. With the help of the model built, the parameters and characteristics of not only the magnetic reducer but also other components of the system were investigated. The efficiency at the output of the electric generator was determined, which is ≈75 % at a load of 2.0 kW. The magnetic transmission moment at a wind speed of 7.8 m/s for the high-speed rotor is 0.91 N∙m, and the low-speed rotor is 7.8 N∙m, which corresponds to a transmission ratio of 8.6. This expands opportunities for exploratory research

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Section: Discussion Of Results Of Investigating Magnetic Transmission...mentioning

confidence: 99%

“…The data given in Table 1 are used to build a numerical simulation mathematical model and are given in more detail in [18].…”

Section: Table 1 Main Parameters Of the Magnetic Transmission Under S...mentioning

confidence: 99%

Section: Functional Diagram Of the System For Converting Wind Mechani...mentioning

confidence: 99%

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Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

Kovalenko,

Tkachuk

et al. 2024

EEJET

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“…A similar model with averaged parameters is used to estimate input and wave impedances. However, for the calculation of modes, the use of this model complicates calculations without approaching the physical essence [11].…”

Section: Theoretical Prerequisites Of Electrophysical Electro Frequen...mentioning

confidence: 99%

Design of a multilink system for calculating high-frequency processes in electric machines with mesh windings

Chumack

Kovalenko

Tymoshchuk³

et al. 2023

EEJET

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This study considers the design of a multi-link high-frequency circuit for calculating defective and defect-free insulation of mesh windings in order to increase the operational reliability of general-purpose electric machines. The object of research is mesh windings of electric machines. The problem to be solved: increasing the operational reliability of electric machines with general-purpose mesh windings by analyzing and modeling defects. The research results make it possible to model defects for the analysis of the state of insulation of electric machines with mesh windings. Special attention in the research was paid to induction motors with a worn-out resource, in particular, 4A80A4 UZ engine. The analysis includes phase-to-body capacitance, winding inductance, eddy current impedance, and winding impedance. Under the WN mode, a decrease in the impedance of the winding section from 3 % to the short-circuit mode was simulated; accordingly, the resonance frequencies for each case of 3 % were determined – 73990 Hz, short-circuit – 74450 Hz, as well as the corresponding input impedances 8938.7 and 8082.5. The corresponding voltage resonances and current resonances were also determined. Appropriate results were also given for the WG scheme. The results reported here relate to the design of the scheme and the research on the defects of the mesh winding. This contributes to the analysis of the state of insulation of mesh windings. The numerical data (resonant frequencies and input impedances) allow a better understanding of the behavior of windings in different states and degrees of defects. Given the research findings, it is possible to better identify and analyze potential defects in mesh windings, which in turn contributes to increasing the reliability of electric machines. The results of this study could be used in the field of diagnosis, service, and maintenance of electric machines with mesh windings

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“…AFMEG combine the advantages of permanent magnets generators with the ability to adjust the output parameters (voltage, power) using an additional winding [12]. Such generators have a number of fundamental advantages compared to generators of a traditional design: high power density, low axial length and a large diameter; minimal pulsations of the electromagnetic torque, low rotor rotation speed [13].…”

Section: Introductionmentioning

confidence: 99%

Mathematical simulation of brushless double stator axial flux magnetoelectric generator for small power electric complexes

Chumak,

Kovalenko,

Kovalenko

et al. 2023

PEMA

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This paper presents the design of a magneto-electric generator with an axial magnetic flux (MEGAP) and a double stator, which is used for an autonomous wind-electric complex. Contactless MEGAPs have the advantages of permanent magnet generators: high reliability, efficiency; and generators with electromagnetic excitation: the possibility of adjusting the output parameters (voltage, power) using an additional excitation winding. In order to meet the requirements of a stand-alone multiplier-less wind power plant, a MEGAP structure consisting of a double stator and a single rotor has been investigated. The use of a double stator design allows more efficient use of the active volume of the generator, increasing its power and stabilizing the output voltage of the stator winding. A three-dimensional numerical field mathematical model of MEGAP was developed. The model fully takes into account the design features of the generator under study, namely the presence of an axial flow from the stator winding and the flow generated by the additional winding. With the help of the model, the external characteristics were calculated, which indicates the correspondence of the developed mathematical model to physical processes. The analysis of magnetic induction in the air gap and in other structural elements of the generator under study was carried out. The analysis of the obtained values showed that the geometric dimensions of the generator, which were previously selected, are correct and do not require significant adjustments. In the future, it allows you to use the results of this calculation for the preparation of documentation for the production of the prototype. Static characteristics of MEGAP and values of magnetic parameters in all structural elements were studied. An additional winding is used to stabilize the output voltage when the speed of rotation of the generator changes and at different loads. At a relative power of the additional winding of ≈7%, the output voltage of the generator increases by ≈24%. A more significant result can be achieved by adjusting the current of the additional winding with special controllers

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Development of control algorithms for magnetoelectric generator with axial magnetic flux and double stator based on mathematical modeling

Cited by 3 publications

References 0 publications

Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

Construction of the mathematical model of magnetic transmission for an autonomous wind power plant

Design of a multilink system for calculating high-frequency processes in electric machines with mesh windings

Mathematical simulation of brushless double stator axial flux magnetoelectric generator for small power electric complexes

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