Decentralized bypass and centralized bypass of modular UPS

Modular type UPS is a high power UPS system which divided into several sub modules in parallel, controlled by the optimized system, realize the system online expansion and maintenance, and greatly improve the system reliability, availability and energy saving effect, reduce the maintenance cost, in recent years has gradually become the mainstream choice for customers.

1.Decentralized bypass structure

Decentralized bypass structure, that is, each power module contains rectifier, inverter and battery conversion and other parts, but also with the same capacity of the power module static bypass, can be considered as a UPS with no liquid crystal monitor. A plurality of modules are connected in parallel in the cabinet to form a system, and the relation between the modules is similar to the traditional multi parallel UPS system. When the system is switched to the bypass power supply, the load is connected in parallel by all the power modules.

2.Centralized bypass structure

Centralized bypass structure, with only one centralized bypass module which capacity is equal to the system, power module contains only consist of rectifier and inverter and battery converter circuit, each part by independent controller, parallel module is no longer the traditional parallel UPS system, but contains complex inverter current, bypass control and monitoring logic.

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