Analytical calculation of mutual coupling between two misaligned rectangular coils with rectangular cross-section in wireless power applications

Wu, Dehui; Qisheng, Sun; Wang, Xiaohong; Tianfu, He

doi:10.1088/1361-6463/aa8ca3

Cited by 5 publications

(1 citation statement)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reference [31] proposed an analytical model to calculate the mutual inductance between two rectangular coils with different misalignments. A schematic diagram of the two rectangular coils is shown in Fig.…”

Section: A Mutual Inductance Modelingmentioning

confidence: 99%

Vision-Based Rapid Power Control for a Dynamic Wireless Power Transfer System of Electric Vehicles

et al. 2020

View full text Add to dashboard Cite

Dynamic wireless power transfer brings a refreshing way for charging electric vehicles (EVs) in motion, which can help reduce the amount and bulk of onboard batteries and prolong the vehicle mileage. However, the misalignment between the transmitter coil and receiver coil varies randomly as the vehicle moves, reducing the stability of the output power and the system efficiency. Therefore, a guiding approach is imperative to maintain the coil alignment within an acceptable range. In this paper, a visionbased misalignment detection method is proposed to improve the stability of the system output power and the efficiency. First, the relationships among the system efficiency, output power and mutual inductance were derived in theory. Second, the relationship between the mutual inductance and the misalignment was modeled and simulated using ANSYS Maxwell software. Third, image detection of the ground guideline was used to locate the transmitter coil, and thus obtain the accurate misalignments online. Based on the acquired misalignments, the output power can be rapidly and precisely regulated to the desired value. Finally, the experimental results show that the proposed method can accurately acquire the coil misalignments and then rapidly regulate the system output power in comparison with the conventional discrete proportional-integral control algorithm.

show abstract

Section: A Mutual Inductance Modelingmentioning

confidence: 99%

Vision-Based Rapid Power Control for a Dynamic Wireless Power Transfer System of Electric Vehicles

et al. 2020

View full text Add to dashboard Cite

show abstract

Impedance Analysis of a Meander Coil with Rectangular Cross Section Above a Planar Conductor Using Vertex Description

Tianfu

Wang

et al. 2018

J Nondestruct Eval

View full text Add to dashboard Cite

Design and evaluation of magnetic field strength detection devices for millimeter-sized planar square inductors based on a mutual coupling model

Tian

Song

et al. 2022

Review of Scientific Instruments

View full text Add to dashboard Cite

Micro-magnetic stimulation is a research hotspot in the field of neuromodulation. However, it is difficult to measure the weak magnetic field produced by a millimeter-sized inductor. In this study, a mutual inductance model considering different positions and sizes was established for a common planar square spiral coil micro-magnetic stimulator. A physical model was simulated using the Comsol finite element method to verify the accuracy of the mutual inductance model. A weak magnetic field detection system was constructed using the TI AD8130 and NE5532 chips, and the magnetic field strengths of excitation micro-coils sized 3.612 × 3.612 and 5.55 × 5.55 mm2 were measured. The results show that when the size ratio of the detection coil (DC) to the excitation coil (EC) is under a specific ratio (DC:EC = 1:1, 2:1, 1.53:1,2.36:1), the measurement range of the magnetic field strength is in the range 0–3.06 mT with an error of 0.05 mT, and the frequency is in the range 1–120 kHz. The measurement accuracy rate reaches 97.62%. The results of this study have potential application in the measurement of the weak magnetic field.

show abstract

Analytical calculation of mutual coupling between two misaligned rectangular coils with rectangular cross-section in wireless power applications

Cited by 5 publications

References 16 publications

Vision-Based Rapid Power Control for a Dynamic Wireless Power Transfer System of Electric Vehicles

Vision-Based Rapid Power Control for a Dynamic Wireless Power Transfer System of Electric Vehicles

Impedance Analysis of a Meander Coil with Rectangular Cross Section Above a Planar Conductor Using Vertex Description

Design and evaluation of magnetic field strength detection devices for millimeter-sized planar square inductors based on a mutual coupling model

Contact Info

Product

Resources

About