Energy Storage Switch Redundancy for Fault-Tolerant Cascaded Control

The patent implements preliminary action by pre-configuring dual controllers (first and second controllers) for each energy storage apparatus before any fault occurs. Each controller is capable of independently controlling the switches, so that when one controller fails, the other can immediately take over without requiring system shutdown or complex reconfiguration. This preliminary setup ensures continuous operation and maintains system reliability.

The patent applies beforehand cushioning by introducing redundant controller resources as a buffer against potential failures. The dual-controller configuration acts as a cushion that absorbs the impact of controller failure, preventing system shutdown. The redundant controller serves as a safety net that maintains system operation during fault conditions.

The patent segments the communication architecture by creating separate, independent communication routes between controllers and switches. Each controller has its own dedicated communication path to the switches it controls, and these paths do not interfere with each other. This segmentation allows the system to maintain communication reliability through multiple routes while managing complexity through clear, modular communication architecture.

The patent uses controllers as intermediaries that manage the complexity of communication routes. Each controller acts as a mediator between the energy storage apparatus components, handling switch control and state monitoring independently. This intermediary approach simplifies the overall system architecture by localizing control functions and reducing the need for complex direct communication between all system components.