Computer model for railway inductive power supply using Valtchev model

Dias, Joao Victor Pinon Pereira; Kim, Hyungchul; Jang, Dong-Uk

doi:10.1109/icems.2011.6073510

Cited by 7 publications

(2 citation statements)

References 10 publications

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“…This model is already seen in some articles, e.g. [6]. It allows considering the primary side of the converter as the only controlled side and permits to calculate (rapidly) the state variables in any instant of the process.…”

Section: Chargingmentioning

confidence: 96%

Experimental study of the energy portions control in Series Resonant Converters

Valtchev

2012

2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)

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Although the Series Resonant Converter (SRC) is not yet fully explored and widely applied it is becoming more and more important for the contactless charging of the Electric Vehicles (EV) batteries. From the point of view of the modern propulsion batteries the careful and reliable charging is very important and good solutions will be the SRC contactless battery charging and the online resonant energy transfer. To their high efficiency must be added the high stability of an instantaneous method of control. The proposed solution is based on correcting the portion of energy that is sent to the load in each half period through the resonant circuit. Experimental results are shown from the implementation of this idea in the SRC working on a loosely coupled (contactless) magnetic connection.

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Section: Chargingmentioning

confidence: 96%

Experimental study of the energy portions control in Series Resonant Converters

Valtchev

2012

2012 13th International Conference on Optimization of Electrical and Electronic Equipment (OPTIM)

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“…The simple model presented by Steinmetz is widely used for WPT transformers. Other models include one that divides the primary and secondary sides based on the value of the coupling coefficient [30,31] and one based on duality between magnetic and electric circuits [21].…”

Section: Electrical Analysismentioning

confidence: 99%

Increase in Robustness against Effects of Coil Misalignment on Electrical Parameters Using Magnetic Material Layer in Planar Coils of Wireless Power Transfer Transformer

Dias

Miyatake

2018

Energies

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Utilization of wireless power transfer in light rail transits is seen as one solution for electrification of lines. The main advantage of this supply system is the reduction of installation; moreover, the alignment between the transmitter coil in the track and the receiver coil in the train should be perfect in order not to affect the power transfer. To reduce the effects of misalignment on the input and output electric parameters of the system, a new planar core and coil design, called hybrid intercore coil, is proposed. The proposed design uses a magnetic material layer between the windings in the inner half of the coil to create a non-uniform magnetic field distribution, which makes the system more robust against the effects of coil misalignment on the system current and voltage. Simulations with finite element method software were conducted to compare designs. The results show that the proposed design is less susceptible to the effects of misalignment and is more efficient. Prototype cores were constructed to verify the simulation results. Measurements show a smaller input overcurrent and output overvoltage when operating in resonance mode. The proposed design reduced the effects of coil misalignment on electrical parameters.

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The Efficient and Stable Charging of Electric Vehicle Batteries: Simplified Instantaneous Regulation

Medeiros

Valtchev

2012

Technological Innovation for Value Creation

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Part 13: Energy Smart GridInternational audienceThe future charging of the growing fleet of Electric Vehicles (EV) requires new solutions that guarantee a better efficiency and widely spread chargers. Both in fast charging and in slow charging of the electric vehicle (EV) and hybrid electric vehicle (HEV), the wireless charger is the better choice. The wired charger is limited by its cabling and relatively lower output voltage, while the contactless charger can be more universal and safe. What rests to be discovered is the more efficient energy transfer that would have a stable operation. The strategy is based on guaranteeing the correct portion of energy transported by the resonant tank to the load. Some results are shown from this implementation of the instantaneous energy control

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Computer model for railway inductive power supply using Valtchev model

Cited by 7 publications

References 10 publications

Experimental study of the energy portions control in Series Resonant Converters

Experimental study of the energy portions control in Series Resonant Converters

Increase in Robustness against Effects of Coil Misalignment on Electrical Parameters Using Magnetic Material Layer in Planar Coils of Wireless Power Transfer Transformer

The Efficient and Stable Charging of Electric Vehicle Batteries: Simplified Instantaneous Regulation

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