Design of coil parameters for inductive type wireless power transfer system in electric vehicles

Abstract

Summary Wireless power transmission (WPT) is becoming a more viable idea and creative solution, particularly for the battery charging of electric vehicles (EVs). Inductive power transfer (IPT) is a widely used wireless charging technology. Here, the energy transformation takes place between two coils that are magnetically coupled. WPT has recently increased the interest of researchers because it is such a secure, easy, and dependable method of recharging EVs. This article gives an idea to design the charging coils using WPT system by using resonant inductive coupling and also optimizes the coupling coefficient using rain optimization algorithm (ROA). Wireless power transfer based on inductive coupling may perhaps potentially be applied in many real‐world applications. This article uses ANSYS MAXWELL and FEMM 4.1 software tools to analyze the results for 2D and 3D coil WPT systems. From these software simulation results, it has been illustrated that the distribution of flux between Tx and Rx is analyzed for spiral and rectangular coil shapes. The selected coupling coefficient is 0.08. At 95 kHz, the inductance is 34.76 italicμH, the mutual inductance is 9.16 italicμH, and the coupling coefficient is 0.2635. Highlights Design an efficient circuit to enhance the whole performance of WPT system. Self‐inductance, mutual inductance, and coefficient of coupling parameter are analyzed. Rain optimization algorithm is designed to optimize the parameter for enhancing the efficiency.

Recent Results in Shielding Technologies for Wireless Electric Vehicle Charging Systems

“…This method is used to determine the optimal design variables for a practical shielding design, considering the magnetic coupling and the cost of the shielding as objective functions [91]. Rain optimization algorithm (ROA): The rain optimization algorithm is used to optimize the coupling coefficient in the design of the charging coils for inductive type wireless power transfer systems in electric vehicles [92]. Design optimization method for coil winding: A design optimization method for rectangular pad winding is proposed to improve the coupling coefficient of the coupling coil.…”