Energy storage converter parallel operation system and method based on high-speed serial optical fiber

The invention provides an energy storage converter parallel operation system and method based on a high-speed serial optical fiber. The system at least comprises a communication optical fiber, a battery module and at least two PCS devices with independent control modules. The PCS devices are connected with the same section of bus, optical fiber communication modules of the PCS devices are sequentially connected in series through communication optical fibers to form a looped network, any PCS device on the looped network serves as a host through parameter setting, the remaining PCS devices serve as slaves, and each PCS device supplies power through an independent battery module; all the PCS devices have the same structure, the device communication modules are connected in series through the serial optical fibers to form the looped network, any PCS device can be set as a host in a parameter setting mode, other PCS devices can be set as slaves, an additional independent controller is not needed, and the whole sys