While there have been several studies combining Photovoltaic (PV) and Dynamic Wireless Power Transfer (DWPT), there have been few studies of completely off-grid PV+DWPT systems. In an off-grid PV+DWPT system, the amount of PV power generated and the power transmitted to the vehicle fluctuates. These power fluctuations cause the DC bus voltage between the PV system and the DWPT system to fluctuate significantly, which causes problems with the Maximum Power Point Tracking (MPPT) control of the PV system. The system proposed in this paper uses an Electric Double Layer Capacitor (EDLC) as a buffer to absorb the power fluctuation and solve the problem. Simulation using MATLAB and experiment using a device simulating DWPT confirmed the suppression of DC bus voltage fluctuation and showed stable system operation.