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Wyszukujesz frazę "wireless charging system" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Analysis and Designing of a Wireless Charging System for Electric Vehicles Using the Topology of Double Sided LLC Compensator
Autorzy:
Khademi, Hamid Reza
Moghaddam, Mahmoud Samiei
Baygi, Seyed Javad Mohammadi
Hajizadeh, Amin
Powiązania:
https://bibliotekanauki.pl/articles/103301.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
wireless charging system
electric vehicles
continuous conduction mode
discontinuous conduction mode
bezprzewodowy system ładowania
pojazdy elektryczne
tryb ciągłego przewodzenia
tryb przewodzenia nieciągłego
Opis:
The purpose of the present study was to simulate the equivalent circuit in the MATLAB software in order to implement the desired relationships for both continuous-conduction mode (CCM) and discontinuous-conduction mode (DCM), and to obtain the power and efficiency values at different frequencies. Then, it was necessary to optimize the effective values on the power by Particle Swarm Optimization (PSO) algorithm. After optimization, the optimization and pre-optimization results were compared and, if post-optimization results were not desirable, effective parameters should be reviewed before the optimization stage and the tunable parameters should be changed to achieve the desired results. This process will continue to obtain the optimization results. The results show that the highest efficiency is 98% in the DCM mode and 95% in the CCM mode. In both methods, we achieved more favorable results than the with the PSO method. However, the DCM mode provides an improvement which is about 2.6% higher than CCM.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 2; 168-175
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical analysis of the efficiency of a V2G wireless charger for electric vehicles
Autorzy:
Triviño, Alicia
Gonzalez-Gonzalez, Jose M.
Aguado, Jose A.
Powiązania:
https://bibliotekanauki.pl/articles/136256.pdf
Data publikacji:
2019
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
V2G
wireless discharge
losses
efficiency
electric vehicle
inductively-coupled power system
ICPT
bidirectional
wireless charging
Opis:
V2G (Vehicle-to-grid) technology will report important benefits for the operation and safety of the grid. In order to facilitate the expansion of the V2G technology in a future, it is recommended to offer the drivers with easy to use methods to charge and discharge their EV batteries. In this sense, wireless chargers are expected to play a relevant role in the future electrical networks as it reduces the users intervention. The development of this kind of system is still open to improve them in terms of their operation, their compliance and their control. An important issue for the evaluation of these systems is the efficiency, which measures the power losses occurring in the system. This paper addresses a deep study about the losses in a bidirectional wireless charger. Then, it provides with a mathematical model to characterize them. This model is validated by means of experimental results conducted in a 3.7-kW prototype.
Źródło:
Transactions on Environment and Electrical Engineering; 2019, 3, 1; 9-14
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
System identification and tuning of wireless power transfer systems with multiple magnetically coupled resonators
Autorzy:
Winges, J.
Rylander, T.
Petersson, C.
Ekman, C.
Johansson, L.-Å.
McKelvey, T.
Powiązania:
https://bibliotekanauki.pl/articles/136270.pdf
Data publikacji:
2017
Wydawca:
EEEIC International Barbara Leonowicz Szabłowska
Tematy:
wireless power transfer
magnetically coupled resonators
system identification
tuning
Bayesian estimation
impedance matching
charging electric vehicles
Opis:
We present a procedure for system identification and tuning of a wireless power transfer (WPT) system with four magnetically coupled resonators, where each resonator consists of a coil and a capacitor bank. The system-identification procedure involves three main steps: 1) individual measurement of the capacitor banks in the system; 2) measurement of the frequency-dependent two-port impedance matrix of the magnetically coupled resonators; and 3) determining the inductance of all coils and their corresponding coupling coefficients using a Bayesian approach. The Bayesian approach involves solving an optimization problem where we minimize the mismatch between the measured and simulated impedance matrix together with a penalization term that incorporates information from a direct measurement procedure of the inductance and losses of the coils. This identification procedure yields an accurate system model which we use to tune the four capacitance values to recover high system-performance and account for, e.g., manufacturing tolerances and coil displacement. For a prototype WPT system, we achieve 3.3 kW power transfer with 91% system efficiency over an air-gap distance of approximately 20 cm.
Źródło:
Transactions on Environment and Electrical Engineering; 2017, 2, 2; 86-92
2450-5730
Pojawia się w:
Transactions on Environment and Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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