Identification of the Technical Condition of Induction Motor Groups by the Total Energy Flow

Koteleva, Natalia; Korolev, Nikolay; Zhukovskiy, Y. L.

doi:10.3390/en14206677

Cited by 9 publications

(8 citation statements)

References 43 publications

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“…Finding by calculation the values of higher harmonics corresponding to the maximum permissible asymmetry of the electric machine allows to avoid working with bulky calibration stands. In this case, only verification tests of several electric motors are required [27,28].…”

Section: Resultsmentioning

confidence: 99%

Research and calculation of the levels of higher harmonics of rotary electric machines in active-adaptive networks

Khomenko,

Nerubatskyi,

Plakhtii

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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In the materials of the article, the parameters of the higher harmonics of the groove frequency are analyzed, which affect the reliability of the operation of electrical equipment and the loss of electrical energy in active-adaptive networks. The influence of higher harmonics of rotary electric machines on the modes of operation of active-adaptive networks and their power equipment is considered. It was established that this influence depends on the energy level of higher harmonics and the modes of operation of active-adaptive networks. A technique is proposed that allows determining the levels of groove harmonic components in the phase windings of electric machines. The calculation of the energy level of higher harmonics was carried out taking into account the electromagnetic asymmetry of rotating electric machines and asymmetric modes of operation of three-phase electric networks using the method of phase coordinates. The obtained results are based on theoretical and experimental studies of the influence of higher harmonics of rotating electric machines on the modes of operation of electrical networks and power energy equipment.

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Section: Resultsmentioning

confidence: 99%

Research and calculation of the levels of higher harmonics of rotary electric machines in active-adaptive networks

Khomenko,

Nerubatskyi,

Plakhtii

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…In work [1] it is stated that the assessment of the technical condition of vehicles during operation is related to the need to take into account a number of criteria with different values and dimensions. This circumstance includes the difficulty of combining a set of indicators, values, and criteria during their computer processing.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Comprehensive assessment of technical condition of vehicles during operation based on Harrington’s desirability function

Aulin,

Rogovskii,

Lyashuk

et al. 2024

EEJET

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The object of research is the process of changing the technical condition of vehicles during their operation. The study solved the problem of comprehensive evaluation of change in the technical condition based on Harrington’s desirability function. The essence of the results is as follows. A scale of desirability was built and a set of criteria for assessing the technical condition of vehicles was clarified. A general desirability index is proposed as a convolution of partial Harrington desirability functions. When solving the investigated problem, the characteristics and properties of the partial and generalized Harrington’s desirability function and their graphical representation were taken into account. Using an example of the technical condition of the chassis and braking system of vehicles, a set of controlled parameters was formed. Based on the values of the controlled parameters, the regression equation of the partial Harrington desirability functions was obtained. The value of the weighting coefficients of each of the criteria was determined and the generalized desirability function was calculated. As a result of the study, it was established that if the generalized criterion of desirability is D<0.37, then individual nodes, systems, and units of the vehicle are in a pre-accident condition, if 0.37£D£0.63 – in a satisfactory condition, and if D>0.63 – in a good condition and cannot be the cause of a traffic accident. An applied aspect of the results is the implementation of the technique of comprehensive assessment of the technical condition of the vehicle. This causes an increase in the productivity of the expert (specialist), will shorten the period of the auto technical examination, and improve its quality. The results could be used by insurance companies and investigators, investigators and judges when considering traffic accidents

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“…The Voltage rise index of a collector bus (VRI%) is the ratio of the difference between its voltage in the presence of DG in the distribution network (V + DG) and its voltage without DG (V-DG), to the voltage without DG 𝑉𝑅𝐼% 100 (10) Some codes, such as the German VDEW, do not allow to exceed VRI% = 2%, but this number is suitable for strong networks, that is, those that have a normal voltage profile, but for weak networks, this indicator remains useful only as an indication [16,17]. Over the support of the distributed generation of voltage.…”

Section: Voltage Rise Index (Vri)mentioning

confidence: 99%

Evaluation of the impact of distributed generation on voltage and power losses in the electrical distribution network

Ustinov,

Abou rashid

2024

Preprint

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The increasing expansion of the use of renewable distributed generation (RDG) technologies in electrical networks such as solar plants or wind farms and others has changed the nature of the distributed system and transformed it from the traditional system into an efficient system. This system has led to various technical effects in the host networks, with regard to voltage, electrical energy losses, fault levels, stability and electrical energy quality. These effects are not generic to any network; It can be positive, negative or neutral depending on the structure of the studied network, its operational condition and the various technology of the distributed generators. This research aims to quantitatively correct the effects of (RDG) in terms of voltage and electrical energy losses in the host networks. , since efficient distribution systems contain generators of a special nature and often contain bidirectional flux energy, it was necessary to construct a mathematical model of the distribution system hosting RDG units, which is fundamentally different from the traditional model of defining the reference electrical distribution bus bar. In order to achieve the systematic analysis, evaluation criteria and indicators were determined and mathematical formulas for them were completed. Based on the accomplished mathematical basis, an algorithm designed in such a way that it can be applied to any multi-voltage distribution system and to different distributed regenerative generation techniques is proposed. To demonstrate the algorithm's capabilities, it was tested on typical distribution networks using Factory Power DigSilent software, which is somewhat similar to MATLAB but more suitable for large capacity systems.

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Identification of the Technical Condition of Induction Motor Groups by the Total Energy Flow

Cited by 9 publications

References 43 publications

Research and calculation of the levels of higher harmonics of rotary electric machines in active-adaptive networks

Research and calculation of the levels of higher harmonics of rotary electric machines in active-adaptive networks

Comprehensive assessment of technical condition of vehicles during operation based on Harrington’s desirability function

Evaluation of the impact of distributed generation on voltage and power losses in the electrical distribution network

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