A Novel Coil Design Method for Inductive Power Transfer Avoiding Compensation Circuits

2018 ◽  
Author(s):  
Zixuan Yi ◽  
Qi Zhu
Keyword(s):  
Design Method ◽  
Power Transfer ◽  
Coil Design ◽  
Inductive Power Transfer ◽  
Inductive Power

Computational Design for Digitally Fabricated 3D Inductive Power Transfer Coils

2022 ◽  
pp. 1-28
Author(s):  
Jun Xu ◽  
Eugeni L. Doubrovski ◽  
Jo Geraedts ◽  
Yu Song
Keyword(s):  
Design Method ◽  
Computational Design ◽  
Future Research ◽  
Receiver Coil ◽  
Power Transfer ◽  
Coil Design ◽  
Optimal Position ◽  
Inductive Power Transfer ◽  
Transmitter Coil ◽  
Inductive Power

Abstract The geometric shapes and the relative position of coils influence the performance of a three-dimensional (3D) inductive power transfer system. In this paper, we propose a coil design method for specifying the positions and the shapes of a pair of coils to transmit the desired power in 3D. Given region of interests (ROIs) for designing the transmitter and the receiver coils on two surfaces, the transmitter coil is generated around the center of its ROI first. The center of the receiver coil is estimated as a random seed position in the corresponding 3D surface. At this position, we use the heatmap method with electromagnetic constraints to iteratively extend the coil until the desired power can be transferred via the set of coils. In each step, the shape of the extension, i.e. a new turn of the receiver coil, is found as a spiral curve based on the convex hulls of adjacent turns in the 2D projection plane along their normal direction. Then, the optimal position of the receiver coil is found by maximizing the efficiency of the system. In the next step, the position and the shape of the transmitter coil are optimized based on the fixed receiver coil using the same method. This zig-zag optimization process iterates until an optimum is reached. Simulations and experiments with digitally fabricated prototypes were conducted and the effectiveness of the proposed 3D coil design method was verified. Possible future research directions are highlighted well.

scholarly journals Coil Design for High Misalignment Tolerant Inductive Power Transfer System for EV Charging

Energies ◽  
2016 ◽  
Vol 9 (11) ◽  
pp. 937 ◽  
Author(s):  
Kafeel Kalwar ◽  
Saad Mekhilef ◽  
Mehdi Seyedmahmoudian ◽  
Ben Horan
Keyword(s):  
Transfer System ◽  
Power Transfer ◽  
Coil Design ◽  
Inductive Power Transfer ◽  
Ev Charging ◽  
Inductive Power

scholarly journals Improved Efficiency of Inductive Power Transfer in Misalignment Conditions with Multi Coil Design

2019 ◽  
Vol 8 (1) ◽  
pp. 30-36 ◽  
Author(s):  
P. B. Laksono ◽  
M. Alaydrus
Keyword(s):  
Transfer System ◽  
Power Transfer ◽  
Coil Design ◽  
Wireless Power ◽  
Effective Coupling ◽  
Inductive Power Transfer ◽  
Coupling Structure ◽  
Coil Structure ◽  
Spiral Coils ◽  
Inductive Power

In charging process of electric vehicle, a misalignment between the transmitter (Tx) and receiver (Rx) coupling  structure decreases the efficiency of the wireless power transfer. In inductive power transfer system, misalignment reduces the effective coupling between the Tx and Rx coils. In this work, based on previous multiple coil structures, a new multi coil design in proposed to increase the efficiency of the power transfer. Here, a multi coil structure with two rectangular and four spiral coils is designed with the overall dimension of the coil structure 26.5 cm x 36.5 cm. The measurement shows, that for coil distance below 10.3 cm and a lateral misalignment of maximal 10 cm (27.4%), the efficiency of the designed multi coil structure is better compared to previous coil structures. However for larger coil distance or larger misalignment, the efficiency of the new coil structure deteriorates significantly.

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