In wireless power transfer(WPT) system design, incorporating multiple transmitters can improve power transmission capacity and reduce voltage and current stress on power conversion components. This paper proposes a dual-transmitter WPT system featuring two operational modes: standby and strengthening. When the receiver requires low power, one transmitter operates in standby mode, while the other provides power to reduce system losses. When the receiver’s power demand increases, the system switches from standby to strengthening mode, with both transmitters supplying power to the receiver. Additionally, to address energy cancellation caused by phase inconsistencies in the output voltages of the two transmitter inverters, a synchronization control method is introduced, ensuring synchronized operation and boosting system power capacity. Experimental results confirm the feasibility and effectiveness of the proposed method.