Misalignment based electric circuit of a wireless power transfer transformer for light rail transit

Dias, Joao Victor Pinon Pereira; Miyatake, Masafumi

doi:10.1109/icems.2017.8056385

2017 20th International Conference on Electrical Machines and Systems (ICEMS) 2017

DOI: 10.1109/icems.2017.8056385

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Misalignment based electric circuit of a wireless power transfer transformer for light rail transit

Joao Victor Pinon Pereira Dias

Masafumi Miyatake

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2018

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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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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

Self Cite

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show abstract

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Misalignment based electric circuit of a wireless power transfer transformer for light rail transit

Cited by 1 publication

References 7 publications

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

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

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