One kind of UPS power supply often used in daily life is power modular UPS power supply. Power modular rack UPS power supply consists of rack and power module. The power supply module includes the traditional UPS, filter, charging, inverter, etc. However, the static bypass is shared with a part of the system for monitoring and display. Each module operates in parallel independently. The display control module on the upper part of the cabinet is only used as the user switch UPS host and network monitoring platform. The detailed analysis of the application of rack modular UPS power supply is expected to help us.
The rack-mounted modular UPS power supply can be configured to meet the business requirements at that time, and more modules will be added in the future. The optimization function of the system significantly reduces the overall cost of ownership. Modular UPS power supply includes rectifier, inverter, some also include static bypass switch and related control circuit, CPU main control board. The biggest advantage of modularization is that it can improve the reliability and availability of the system. The fault of any small battery will not affect the normal operation of other modules, and hot plugging can shorten the installation and repair time of the system.

The other is completely modular UPS power supply. This rack modular UPS power supply consists of a rack and a single module. Each unit module is equipped with the entire UPS power supply and control circuit, including rectifier, inverter, static bypass switch and related control circuit, CPU main control board. Each UPS module has an independent management display screen. Just as the container is loaded in the factory, the installation and commissioning of the rack modular UPS is also started in the factory. According to the standardized module, UPS power supply is produced and manufactured in the design of products and can establish a consistent standard, so that all components in the whole system can achieve the best function, and together, it also avoids the compatibility problem of system defects.
In practical applications, the output impedance of all UPS power supplies cannot be the same. In addition, the output voltage of each inverter and the phase locking of the power supply voltage have positive and negative errors, and the voltage of each UPS has phase difference and amplitude difference. Both restrict the increase of parallel series, which in turn restricts the power of the whole machine. The rack-mounted modular UPS power supply will inevitably lead to new innovation of UPS, which will become the future development trend of UPS system.