Energy efficiency criterion of Power Active Filter in a three-phase network

Plakhtii, Oleksandr; Nerubatskyi, Volodymyr; Scherbak, Yakiv; Mashura, Artem; Khomenko, Igor

doi:10.1109/khpiweek51551.2020.9250073

Cited by 16 publications

(3 citation statements)

References 24 publications

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“…The theoretical and practical relevance of the problem of higher harmonics in electrical networks is confirmed by a number of publications, both by foreign [5,6] and domestic specialists [7,8].…”

Section: Introductionmentioning

confidence: 86%

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: Introductionmentioning

confidence: 86%

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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“…Вiтрoвi турбiни з рeгульoвaнoю швидкiстю признaчeно для дoсягнeння мaксимaльнoї aeрoдинaмiчнoї eфeктивнoстi в ширoкoму дiaпaзoнi чaстoт [27,28]. Рoбoту зi змiннoю швидкiстю мoжнa бeзпeрeрвнo aдaптувaти (прискoрювaти aбo упoвiльнювaти швидкiсть oбeртaння вiтрoвoї турбiни) дo швидкoстi вiтру тaк, щoб пeрeдaвaльнe вiднoшeння швидкoстi лопаті зaлишaлoся пoстiйним дo зaдaнoгo знaчeння, щo вiдпoвiдaє мaксимaльнoму кoeфiцiєнту пoтужнoстi.…”

Section: виклAдeння Oснoвнoгo мAтeрiaлуunclassified

Динаміка, Концепції Та Перспективи Розвитку Вітрової Енергетики

Plakhtii¹,

Nerubatskyi²,

Hordiienko³

et al. 2023

ІКСЗТ

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У статті розглянуто розробки в галузі вітрової енергетики. Наведено аналіз технічних характеристик основних типів вітрових генераторів. Розглянуто питання можливості регулювання швидкості обертання лопастей вітрогенератора, параметри силової напівпровідникої частини, що забезпечує режими плавного пуску генератора. Представлено різні методи керування вітровими турбінами, що встановлюють у віддалених районах з хорошими вітровими умовами та різними можливими конфігураціями. Привeдeнo аналіз фотоелектричної технології, включаючи необхідне електронне базове перетворення потужності. Наведено силові перетворювачі та описано більш сучасні функції керування. Представлено загальний технологічний статус вітроенергетики та фотоелектричних технологій, що демонструє ефективніші та привабливіші джерела енергії для майбутнього. Запропоновано систему двоконтурного авторегулювання гібридного інвертора. Наведено дослідження перехідних процесів керування вітрогенератором шляхом імітаційного моделювання в програмному середовищі Matlab / Simulink.

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“…The input parameters of the model were the technical characteristics of the carrying structure of a car with the design and actual dimensions, the spring suspension of the bogies, and the disturbing force (Table 2) [12]. The actual dimensions of the carrying structure of a boxcar were determined through the field tests.…”

Section: Introductionmentioning

confidence: 99%

Determination of vertical dynamics for a standard Ukrainian boxcar with Y25 bogies

Fomin¹,

Lovska²

2020

Nauk. visn. nat. hirn. univ.

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Purpose. To determine the basic dynamic characteristics of a standard Ukrainian boxcar with the Y25 bogie by means of the mathematic modelling of dynamic loads in the vertical plane and to compare them with the dynamic characteristics obtained for a boxcar with the 18100 bogie. It can be used for substantiation of application of the Y25 bogie as more promising, which can improve the operational efficiency of rail transportation and foster integration of the Ukrainian transport system into the European transportation complex. Methodology. The authors used the mathematical modelling of a boxcar with the Y25 bogie. The research was made in the vertical plane. It was taken into account that an empty car passed over a joint irregularity. The research was made for an 11217boxcar as a predominant type to be used. The authors studied the motion of a car on the 18100 and Y25 bogies. The basic dynamic characteristics were determined for a boxcar with the nominal (design) dimensions of the carrying elements and a boxcar with the actual dimensions (after a long service life) on the basis of the field tests. The differential equations were solved by theRungeKutta method in MathCad software suite. The initial displacements and the speeds were taken equal to zero. The following dynamic characteristics of a boxcar were obtained: acceleration of the body in the center of mass, acceleration of the body in the areas of support on the bogies, forces in the spring suspension of the bogie, and dynamic coefficients of the bogies. Findings. The theoretical research showed that the basic dynamic characteristics of a boxcar with the nominal dimensions were improved by 3851% in comparison to a similar one with the 18100 bogie, and for a boxcar with the actual dimensions the dynamic characteristics were improved by 4350%. Originality. The authors substantiated the application of the Y25 bogie for a standard Ukrainian boxcar with the nominal and actual dimensions of the carrying elements by means of the mathematical modelling of the dynamic loads in the vertical plane. Practical value. Due to lower dynamic loads on the carrying structures of freight cars with the Y25 bogie, it is possible to improve the dynamic characteristics of the structures under the operational modes, to increase the fatigue strength and the operational resource, to decrease the total repair and maintenance costs, to ensure better security and reliability of freight transportation through lower loads on both carrying structures and lashing devices, to increase the speed of freight delivery thanks to better dynamic characteristics of cars, to improve the traffic security, and so on.

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Energy efficiency criterion of Power Active Filter in a three-phase network

Cited by 16 publications

References 24 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

Динаміка, Концепції Та Перспективи Розвитку Вітрової Енергетики

Determination of vertical dynamics for a standard Ukrainian boxcar with Y25 bogies

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