Conventional magnetic coupling mechanisms in dynamic wireless power transfer systems face significant challenges, including excessive track width and substantial output power fluctuations. This paper presents a novel multi-pole magnetic coupling mechanism designed to address these limitations. The proposed solution generates equivalent magnetic flux vectors arranged in a 45° alternating pattern along the direction of motion, ensuring parallel alignment between the primary magnetic flux and vehicle travel path. The system employs two-phase orthogonal excitation currents combined with differentiated winding turns to establish a vector field distribution characterized by uniform magnetic field amplitude and a consistent 45° phase shift between adjacent poles. Simulation results demonstrate the mechanism’s superior performance, with the equivalent coupling coefficient exhibiting less than 3% fluctuation. Remarkably, the system maintains stable coupling performance (0.172–0.177) when the track width equals the transmission distance. These characteristics significantly mitigate power fluctuations during dynamic charging. The proposed design offers a promising approach for enhancing the reliability and efficiency of in-motion wireless charging systems.