- 1. Cable line equivalent circuit parameters determination using the instantaneous power components
- (Content №2 2024)
- ... balance method. Determination of the U-shaped substitution scheme elements parameters is performed using power harmonics and their balance at the corresponding frequencies. For frequency-dependent elements, ...
- Created on 01 May 2024
- 2. A hybrid ICEEMDAN and OMEDA-based vibrodiagnosis method for the bearing of rolling stock
- (Content №2 2024)
- ... technique determined an informative frequency band of 7.2–7.5 kHz for demodulation and construction of the squared envelope spectra, where harmonics of the roller spin frequency and some side bands with ...
- Created on 01 May 2024
- 3. Accounting for a positive, negative and zero sequences power in a three-phase unbalanced electrical system
- (Content №6 2023)
- ... 15. Dong, Y., & Shi, Y. (2021). Analysis of Losses in Cables and Transformers with Unbalanced Load and Current Harmonics. Journal of Electrical and Electronic Engineering, 9(3), 78-86. https://doi.org/10.11648/j.jeee.20210903.13. ...
- Created on 23 December 2023
- 4. Study of leakage current in underground mine power network: a case study in mining in Vietnam
- (Content №6 2023)
- ... Levačić, G., Župan, A., & Čurin, M. (2018). An overview of harmonics in power transmission networks. First International Colloquium on Smart Grid Metrology (SmaGriMet), (1-6), 17806615. https://doi.org/10.23919/SMAGRIMET.2018.8369828. ...
- Created on 23 December 2023
- 5. Using nonlinear ultrasonic measurements to estimate parameters of the sedimentation of slurry solid phase in thickener
- (Content №2 2023)
- ... of the process of propagation of ultrasonic waves in ore slurry, which is determined by the number and size of crushed ore particles in it, can be estimated by determining the amplitudes of several harmonics ...
- Created on 28 April 2023
- 6. Increasing the energy efficiency of modes of distribution networks with photovoltaic stations
- (Content №1 2023)
- ... to equipment from the action of higher harmonic components. Granting the established regularities of higher harmonics influence will allow one to take into account the impact of the relevant indicators ...
- Created on 25 February 2023
- 7. The electrical power quality indicator – interference power factor
- (Content №4 2022)
- ... and voltage harmonics, power loss, electrical power quality References. 1. Zhang, T., Cialdea, S., Emanuel, A.E., & Orr, J.A. (2014). The implementation of correct reactive power measurement ...
- Created on 29 August 2022
- 8. A new approach to improving the sensitivity of earthing relay and reducing the over-voltage in 6 kV grid of open-pit mines
- (Content №2 2022)
- ... 36(4), 2287-2297. https://doi.org/10.1109/TPWRD.2020.3030220. 8. Bun, H.V., & Thanh, L.X. (2019). Impact of power harmonics on precise and discriminative tripping of the relay system for earthing protection ...
- Created on 30 April 2022
- 9. Need of technical accounting at electric energy quality reduction under conditions of AC traction substation
- (Content №3 2021)
- ... traction substation and monitoring of the electrical energy parameters in the observation interval were carried out. Using the Fourier analysis methods, a current and voltage harmonics level was analyzed. ...
- Created on 23 June 2021
- 10. Mathematical modeling of power supply reliability at low voltage quality
- (Content №2 2021)
- ... at the moment and describes the importance of solving these problems. The solutions are mainly based on the change in the level of harmonics affecting the power grids, thus improving the quality of electricity. ...
- Created on 29 April 2021
- 11. Method for optimization of switching frequency in frequency converters
- (Content №1 2021)
- ... in the power switches of the inverter on the switching frequency and the dependence of power losses in the windings of an induction motor on the higher harmonics of currents, which also depend on the switching ...
- Created on 05 March 2021
- 12. The analytic-field method for calculating the squirrel-cage induction motor parameters
- (Contens №3 2020)
- ... of which differ significantly from the experimental ones. The aim of the article is to develop methods (based on field calculations) which take into account eccentricity, saturation, and higher harmonics ...
- Created on 02 July 2020
- 13. Using broadband signals for structural change detection in metal details
- (Contens №3 2020)
- ... harmonics frequency (RBHF), absolute value of which indicates loss of energy in metal during oscillations and serves as an estimate of change in the structure of metal. Originality. Proposed Methods ...
- Created on 02 July 2020
- 14. Calculation of static and dynamic losses in power IGBT transistors by polynomial approximation of basic energy characteristicss
- (Contens №2 2020)
- ... 3. Plakhtii, O., Nerubatskyi, V., Ryshchenko, I., Zinchenko, O., Tykhonravov, S., & Hordiienko, D. (2019). Determining additional power losses in the electricity supply systems due to current’s higher harmonics. Eastern-European Journal of Enterprise Technologies, 1(8(97)), 6-13. https://doi.org/10.15587/1729-4061.2019.155672. ...
- Created on 10 May 2020
- 15. DC link power supply system of electric drill
- (Content №1 2020)
- ... (2), 93-98. 4. Plakhtiy, А. (2018). Analysis of power loss caused by higher harmonics in electrical supply systems. Bulletin of NTU “KhPI”. Series: New solutions in modern technologies, 26(1302), ...
- Created on 10 March 2020
- 16. On the efficiency factor for induction motor at non-sine supply
- (Content №1 2020)
- ... it takes into account the mechanical component of power. For the first time, the concept of the brake harmonic coefficient was introduced as the ratio of the sum of the effective values of the harmonics ...
- Created on 10 March 2020
- 17. Innovative technique for evaluating electric power distortion in cable transmission line
- (Content №1 2020)
- ... текст / full article Abstract: Purpose.The rationale for use of electrical power components produced by current and voltage harmonics with different frequencies to assess its impact on ...
- Created on 10 March 2020
- 18. Active single-phase four-quadrant rectifier with improved hysteresis modulation algorithm
- (Electrical Complexes and Systems)
- ... is observed, namely, the decrease in the amplitudes of the higher harmonics of the input current and the reduction of the resulting harmonic distortion coefficient. Originality. It is established ...
- Created on 26 October 2019
- 19. A voltage loss preliminary estimation in ac busbars
- (Power Supply Technologies)
- ... the influence of the skin-effect, the proximity-effect, density and frequency of fundamental and higher current harmonics, depending on the design parameters of steel busbars, short-circuit ratio and operating ...
- Created on 19 August 2019
- 20. Analysis of the energy efficiency of a two-level voltage source inverter in the overmodulation mode
- (Electrical Complexes and Systems)
- ... of the overmodulation mode in a two-level voltage source inverter will ensure maximum sinusoidality of output current and minimize additional power losses in the load from higher harmonics. In addition, ...
- Created on 19 August 2019