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1. Simple installation, convenient expansion and saving investment
The rack-mounted modular UPS enables the power supply system to be on demand, allowing capacity to “grow dynamically” as the business evolves. It not only meets the expansion requirements of the later business, but also reduces the initial acquisition cost of the user.
2. Parallel redundancy, stable operation and high reliability
In the rack-type modular UPS, the power module parts are redundant in parallel, each module is equipped with input and output fuses and input and output relays, and any one module fails, which does not affect the entire system.
In traditional UPS products, user-safety is generally based on "1+1" or "N+1" parallel redundancy, which can only be fault-tolerant. In the rack-type modular UPS system, the user only needs to purchase the corresponding power module to realize the "N+X" fault redundancy. “Modular redundant parallel structure” is more reliable than traditional UPS.
3, easy maintenance, online disposal, high availability
Traditional UPS requires professional technicians to go to the site for maintenance. All modules of the modular UPS are allowed to be hot swapped. Users can intervene in maintenance and directly replace the UPS spare module online.
The rack-type modular UPS inherits the development of traditional UPS technology in terms of power device technology and manufacturing process. However, in terms of system architecture, based on multi-module parallel connection, not only the system module is hot swapped, but also better. It deals with the relationship between system modules operating independently, mutual cooperation and smooth transition.
4, rack-type modular UPS is currently a representative structure of two types
The first type is the power modular UPS. The power modular rack UPS is composed of the rack plus power module, and the power module includes the rectification, filtering, charging, inverter and the like of the conventional UPS. However, the static bypass is shared with a part of the system for monitoring and display. Each module is independently controlled for parallel operation, and the display control module at the upper part of the cabinet is only used as a user switch UPS host and a networked monitoring platform.
The other type is a fully modular UPS. This type of rack-mounted modular UPS consists of a rack plus a single module, each unit is equipped with the entire UPS power and control circuit, including rectifiers, inverters, static Bypass switch and associated control circuit, CPU main control board. Each UPS module has an independent management system.
Compared with the current development level of power electronics technology and components, the two types of structures have their own advantages, and they also have excellent representative products. They can provide advanced distributed parallel technology, so that the UPS system is not subject to centralized control technology. The reliability limitation in the avoidance of bottleneck failure, providing a modular parallel system with N+X parallel redundancy.