Power flow management in multi-receiver wireless power transfer systems for electric vehicles free from real-time communication

Wireless charger is a reasonable power supply option for electric vehicles (EVs), especially the multi-receiver one system showing potential in the charge-while-drive scenario. From the circuit analysis, it can be seen difficult to maintain specified power distribution among receivers. This study then proposes a real-time communication-free power flow management method of the multi-receiver wireless charger for EVs, considering constant power distribution among receivers. The control diagram and detailed control process are explained. Take the dual-receiver system as an example, constant power distribution is reached and the proposed method has been validated.