UPS Relay Switching for Critical Load Protection in Green Mode

The patent divides the load into critical and non-critical segments, applying different power delivery modes to each. Non-critical loads receive direct AC mains power through the bypass line for high efficiency, while critical loads receive regulated power through the double conversion path for maximum protection. This segmentation resolves the contradiction by allowing the system to optimize for efficiency where protection is less critical while maintaining protection where it is essential.

The patent applies different quality levels of power delivery to different loads based on their criticality. The bypass line provides high-efficiency direct power suitable for non-critical loads, while the double conversion path provides high-protection regulated power for critical loads. This local differentiation of power quality resolves the contradiction by matching the level of protection to the actual needs of each load.

The patent segments the power delivery paths into two distinct modes: double conversion for critical loads and bypass for non-critical loads. The double conversion path provides superior protection through rectification and inversion with isolation, while the bypass path provides efficient direct power transfer. This segmentation allows the system to use the more efficient bypass mode for loads that don't require maximum protection, thereby resolving the efficiency penalty of double conversion mode.

The patent applies partial double conversion action only to the extent necessary for critical loads, rather than applying it to all loads. By using the bypass line for non-critical loads, the system avoids the excessive energy conversion steps for applications where full protection is not needed, thus resolving the efficiency deterioration while maintaining adequate protection where required.

The patent segments the output delivery into two paths: the bypass line for efficient direct power delivery and the double conversion path for regulated power delivery. By assigning non-critical loads to the bypass path and critical loads to the regulated path, the system achieves high overall efficiency while maintaining the ability to provide regulated output power where needed, thus resolving the contradiction between efficiency and regulation capability.

The bypass line, while primarily designed for efficient direct power delivery, is made multi-functional by being selectively applicable to different load types. The system can dynamically assign loads to either the bypass or regulated path based on their requirements, making the bypass infrastructure serve both efficiency and selective regulation functions, thereby resolving the contradiction between efficiency and regulation capability.