Abstract: To address the voltage insufficiency during abrupt current command changes in deadbeat predictive current control, an overmodulation method which dynamically optimizes the current reference value is proposed. First, using voltage vector hexagons to predict the current hexagon in the subsequent switching period, future feasible operating zones can be accurately predicted. This mapping provides convenience for accurate current trajectory planning. Then, the crossing point between the predicted current vector hexagon and the expected current trajectory is determined as an optimized current reference. The purpose is to mitigate the current trajectory drift and ensure the maximum voltage utilization in the overmodulation zone, and a simplified method of calculating the crossing points is provided. By combining DPCC with the proposed overmodulation method, dynamic current reference optimization and deadbeat response in the overmodulation zone can be achieved, and accurate current trajectory tracking can be realized. Taking i_d = 0 and i_d = −0.5i_q trajectory tracking as validation examples, the proposed method is compared with the DPCC with a traditional constant saturation limitation method. Both simulation and experimental results have verified the effectiveness of the proposed method.