It is the key to realize the precise control of power transfer direction and energy to ensure the synchronous phase shift of the bilateral converters in bidirectional inductive power transfer (BD-IPT) system. In order to solve the problem that wireless communication is adopted in bidirectional inductive power transfer system, and the delay caused by the power oscillation affects power transfer. A method for synchronizing the control signals of the bilateral converters that track the extreme value of the output DC current is proposed in this paper, and dual phase-shift control is adopted to make the system efficient when it operates in a wide output power range. First, the power and efficiency characteristics of the BD-IPT system are analyzed in the paper. Next, a method to track the extreme value of the output DC current is designed for synchronization. Then, in order to ensure that the system maintains high-efficiency operation in a wide power range, a bilateral phase shift control is proposed. Finally, the validity of the scheme is verified through simulation and experiment.

在双向感应电能传输（BD-IPT）系统中，实现电能传输方向和能量的精确控制是保证双边转换器同步相移的关键。为解决双向感应电能传输系统采用无线通信，电源振荡引起的延迟影响电能传输的问题。本文提出了一种同步跟踪输出直流电流极值的双边变换器控制信号的方法，并采用双相移控制使系统在较宽的输出功率范围内工作时具有高效性。首先，本文分析了BD-IPT系统的功率和效率特性。下一个，设计了一种跟踪输出直流电流极值的方法用于同步。然后，为了保证系统在较宽的功率范围内保持高效运行，提出了双边移相控制。最后通过仿真和实验验证了该方案的有效性。