Learning Forum

[Leiron Babi Mota]

Do you have any tutorial on how to obtain the power transfer efficiency of a Wireless Power Transfer System using results data from Ansys Maxwell? 

Can someone help us identify the reason why our results didn’t match the results of our reference study? The values that we used for our model were equal to our reference model’s specifications. 

 

Please see the tables below to see the results from our reference study. 

 

Distance (mm)	Reference Model  Leakage Magnetic Field (uT)	uT of our simulation
150	265	51.57
160	320	42.93
180	245	31.77
200	190	25.30
220	150	19.52
240	120	14.36
260	90	11.89
280	75	9.79
300	60	8.03
320	50	6.87
340	35	5.79
350	25	5.14

	From reference	From our simulation
Primary turns	8	8
Secondary turns	9	9
Air gap	132mm	132mm
Primary peak current	81.88cis(0)A	81.88Acis(0)
Secondary peak current	72.74cis(-90deg)A
Ltx	37.68 uH	527.18uH
Lrx	43.81 uH	3287.63uH
Mutual inductance	3.657uH to 8.979uH	231.047uH
Operating frequency	85kHz	85kHz

Links to our files:

https://drive.google.com/drive/folders/1upfp5BAApy-WcJINQg-PxOFTLXxxjSjN?usp=sharing

If there's someone who can help us, kindly reply to this post. Thank you

Data Sources: 

 

Wireless Power Transfer for Light-Duty Plug-in/Electric Vehicles and Alignment Methodology, SAE J2954-2020, SAE International, Oct. 2020.

 

S. Son, S. Woo, H. Kim, J. Ahn, S. Huh, S. Lee, and S. Ahn, “Shielding sensor coil to reduce the leakage magnetic field and detect the receiver position in Wireless Power Transfer System for Electric Vehicle,” Energies, vol. 15, no. 7, pp. 1–15, 2022, doi: 10.3390/en15072493.