Design an‎d simulation of a wireless inductive power transfer converter to improve battery system charging in electric vehicles

9/20/2025 12:00:00 AM

With the increasing adoption of electric vehicles an‎d the necessity to replace fossil fuels with clean energy sources, the development of advanced battery charging technologies has become critically important. One prominent method in this field is wireless power transfer (WPT) based on magnetic induction, which has rapidly gained attention from researchers an‎d industries due to the elimination of physical connections, enhanced safety, reduced mechanical wear, an‎d ease of use. Despite these advantages, limitations such as reduced efficiency over air gaps, sensitivity to load variations, an‎d difficulty in maintaining output voltage an‎d current stability remain fundamental challenges for this technology. Consequently, selec‎ting an appropriate compensation structure an‎d precise circuit design are of paramount importance. In this research, a wireless inductive power transfer system was designed an‎d analyzed, with the primary objective of improving output power quality an‎d increasing transmission efficiency under variable load conditions. To eva‎luate the systemʹs performance, an equivalent circuit model was derived an‎d simulated in a software environment. The results demonstrated that the designed circuit inherently maintains a constant output current over a wide load range (20 to 120 ohms) an‎d stabilizes the load voltage within an acceptable an‎d stable range under other conditions. This feature ensures that load variations have a negligible impact on output power quality, allowing the system to perform reliably in practical applications. Furthermore, investigations indicated that the power transfer efficiency under rated conditions exceeds 93%, with a significant reduction in system losses compared to conventional structures. Additionally, the output voltage an‎d current exhibit low ripple, resulting in high-quality delivered power. These characteristics make the proposed system a suitable can‎didate for application in wireless charging stations for electric vehicles. In summary, the findings of this study suggest that the presented design can be an effective step towards improving electric vehicle charging infrastructure. Beyond enhancing efficiency an‎d stability, it can pave the way for the broader adoption of wireless power transfer technology in future transportation systems.

انتقال توان بي‌سيم , شارژ خودرو برقي , انتقال توان القايي , كويل مغناطيسي , شارژ جريان ثابت – ولتاژ ثابت

Wireless power transfer , electric vehicle charging , Inductive Power Transfer , magnetic coil , constant current - constant voltage charging

Amir Hossein Karamali

Dr. Kalantar