In the domain of dynamic inductive wireless power transfer (DIWPT) systems, designed specifically for electric vehicle (EV) applications, extensive discussions have focused on unipolar coil structures. The DD coil configurations have been recognized for their better suitability in DIWPT applications. However, the challenge of reducing cross-coupling and mutual inductance effects among transmitting units remains essential for maintaining system robustness and ensuring stable, efficient power transfer under dynamic conditions. This article proposes a novel DIWPT magnetic coupler with a staggered transmitter and receiver configuration to address these issues. This design aims to minimize cross-coupling and mutual inductance while maintaining stable mutual inductance across the transition region, thus promoting high-efficiency power transfer and consistent performance. To validate the effectiveness of the proposed magnetic coupler design under DIWPT conditions, this research utilized the finite element analysis (FEA) tool, Maxwell, to confirm changes in mutual inductance and to optimize coil turns and structural design for improved magnetic coupler performance. Additionally, a comprehensive 2.8 kW system with a average efficiency of 95% was simulated using MATLAB Simulink to verify the operational integrity of the proposed DIWPT magnetic coupler.

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A New Orthogonally-Staggered DD Magnetic Coupler for Dynamic Inductive Wireless Power Transfer with Low Cross-Coupling and High Misalignment-Tolerance

  • Xuxing Duan,
  • Wei Han,
  • Guangyu Yan

摘要

In the domain of dynamic inductive wireless power transfer (DIWPT) systems, designed specifically for electric vehicle (EV) applications, extensive discussions have focused on unipolar coil structures. The DD coil configurations have been recognized for their better suitability in DIWPT applications. However, the challenge of reducing cross-coupling and mutual inductance effects among transmitting units remains essential for maintaining system robustness and ensuring stable, efficient power transfer under dynamic conditions. This article proposes a novel DIWPT magnetic coupler with a staggered transmitter and receiver configuration to address these issues. This design aims to minimize cross-coupling and mutual inductance while maintaining stable mutual inductance across the transition region, thus promoting high-efficiency power transfer and consistent performance. To validate the effectiveness of the proposed magnetic coupler design under DIWPT conditions, this research utilized the finite element analysis (FEA) tool, Maxwell, to confirm changes in mutual inductance and to optimize coil turns and structural design for improved magnetic coupler performance. Additionally, a comprehensive 2.8 kW system with a average efficiency of 95% was simulated using MATLAB Simulink to verify the operational integrity of the proposed DIWPT magnetic coupler.