A new design of an air core transformer for Electric Vehicle On-Board Charger

Rigot, Valentin; Phulpin, Tanguy; Sadarnac, Daniel; Sakly, Jihen

doi:10.23919/epe20ecceeurope43536.2020.9215632

Cited by 3 publications

(3 citation statements)

References 11 publications

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“…The transformer characteristics are described below in Table 1 for 1500 kHz, which is the switching frequency of our converter application. Further analyses are presented in [13]. Table 1 globally shows a drastic limitation of the magnetic emission, considering that the probe is set at 2 cm from the conductor for a 10% reduction of the inductance value by additional conductors.…”

Section: Magnetic Field Canalizationmentioning

confidence: 99%

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A New 7 kW Air-Core Transformer at 1.5 MHz for Embedded Isolated DC/DC Application

et al. 2022

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This paper presents the study of air-core transformers for electric vehicles, developing them for medium-power (tens of kWs) converter applications specifically used at a high frequency. Air-core transformers have the advantage of lacking magnetic saturation and iron losses, making them suitable for high-frequency applications. We designed and manufactured a transformer for a determined frequency and inductance value. The design of this passive component aims to both keep the magnetic field inside the transformer and manage the thermal energy efficiently. The electrical, magnetic, and thermal properties are simulated and then verified by experiments with a specific test bench. The transformer reaches high performances for a higher frequency than usual for an equivalent power transfer in automotive applications.

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Section: Magnetic Field Canalizationmentioning

confidence: 99%

“…This signal is composed of the DC value Um and an alternative square signal Ualt. The voltage equations are in (13).…”

Section: Test Benchmentioning

confidence: 99%

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A New 7 kW Air-Core Transformer at 1.5 MHz for Embedded Isolated DC/DC Application

et al. 2022

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Geometrical Optimization of Medium-Frequency Air-Core Transformers for DCX Applications

Guillod¹,

Czyż²,

Kolar³

2022

IEEE J. Emerg. Sel. Topics Power Electron.

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Model of an Air Transformer for Analyses of Wireless Power Transfer Systems

2023

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This article presents a new model of a dedicated air transformer for computer analyses of wireless power transfer systems. This model includes a form of subcircuit for SPICE. It takes into account the electric, magnetic and thermal properties of the modeled device. The form of the elaborated model is presented and the results of its experimental verification are shown. Some results from measurements and computations of an air transformer and a wireless power transfer system containing this transformer are shown and discussed. The structure of the tested system and the measuring setup used are also described. The results of measurements and computations illustrating the influence of the distance between the windings of the air transformer and the displacement between its windings on the output voltage of the power transfer system are presented and discussed. The influence of load resistance on the properties of the considered system is analyzed.

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A new design of an air core transformer for Electric Vehicle On-Board Charger

Cited by 3 publications

References 11 publications

A New 7 kW Air-Core Transformer at 1.5 MHz for Embedded Isolated DC/DC Application

A New 7 kW Air-Core Transformer at 1.5 MHz for Embedded Isolated DC/DC Application

Geometrical Optimization of Medium-Frequency Air-Core Transformers for DCX Applications

Model of an Air Transformer for Analyses of Wireless Power Transfer Systems

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