.Wireless power transfer (WPT) has been widely applied in various fields due to its high safety, non-contact operation, and adaptability to environmental changes. However, during dynamic wireless power transfer (DWPT), magnetic coupling mechanisms often cause voltage output fluctuations due to misalignment tolerances. To address this, this paper proposes an improved magnetic coupling mechanism for DWPT, where a reverse-wound coil is added to the long track coil to cancel part of the magnetic flux, thereby improving the alignment tolerance during the coil’s movement. First, finite element simulations were conducted using Maxwell software, and a reverse-wound coil was designed based on the original long track coil to form a new transmitting coil structure. Subsequently, the coil’s structural parameters were further optimized based on mutual inductance results at different positions. Finally, a wireless power transfer system experimental platform was constructed to validate the practical performance of the proposed coupling mechanism. Within a stable region where the voltage fluctuation is within 5% of the reference voltage, the improved magnetic coupling mechanism expanded the stable region by 20 cm, which is a 40% increase compared to the original coil.