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In the era of rapid development of information technology, data centers play a key role in storing, processing, and transmitting massive amounts of data. In order to ensure the continuous operation of the data center and the security of data, the uninterruptible power supply system (UPS) is an indispensable and important part of the data center. Did you know that there are various types of UPS systems? How to choose the right UPS system in a data center environment? In this article, I will take you to explore the different types of data center UPS systems in depth, so that you can help when you choose.
UPS system
The UPS system provides stable power backup to effectively respond to power failures, fluctuations, and other power quality issues. Today's UPS systems come in a wide range of sizes, capacities, and feature sets, from providing backup power for a single desktop computer to powering large megawatt-class data centers. As data centers grow, many UPSs can also be easily expanded.
Double-conversion UPS system
Although UPS has several different topologies (standby, line interaction, and double conversion), the preferred data center design is almost always a double conversion system. With this topology, the battery system is always connected to the critical systems it supports and does not need to switch to backup power.
The dual-conversion unit not only keeps critical systems and equipment running during a complete power outage, but also protects the equipment from a variety of power anomalies, including voltage dips, surges, brownouts, frequency and harmonic distortion.
upsMulti-level topology.
In modern data centers, state-of-the-art UPS systems rely on transformerless, multi-level topologies to ensure maximum reliability and efficiency. Some manufacturers also use transistors such as silicon carbide, which increase the efficiency of UPS systems by up to 98% in double-conversion mode.
Less critical equipment in the data center can also be protected with interactive UPS, especially in edge computing environments where IT personnel may not be on-site. This type of UPS can adjust the output based on overvoltage and undervoltage conditions without relying on the battery, and if a power failure is detected, the switch will transfer the load to the battery.
In a standby offline topology, the UPS supplies power directly to the load and only switches to the standby power supply in the event of a power failure. Since this type of UPS is very basic and does not provide protection against other power fluctuations, it is not suitable for data center environments.
UPS system redundancy
In order to meet the high uptime requirements of the data center, most UPS systems within the data center are also configured with redundancy. Put simply, redundancy can be achieved when multiple UPSs or modules are connected together to support the load. There are several levels of redundancy, depending on how the UPS units are put together and how they are connected to critical systems. For example:
N+1 redundancy:"N" is defined as the total UPS capacity required to handle the total load. To achieve simple redundancy, an additional module is installed, denoted as n+1. In this multi-module system, each UPS is capable of providing the required "N" power.
2n redundancy:Enterprise-class IT devices typically support dual-power operation, where devices are connected to multiple power sources. In the data center, these two ** are independent UPS systems; The "A-side" and "B-side" can power the computer equipment, and each side is capable of supporting the entire load capacity if needed.
2 (n+1) redundancy:In a 2(n+1) redundant power distribution system, instead of one module UPS on each side, there are multiple modules. This provides n+1 redundancy at each end.
With the advent of the digital era, the importance of data center UPS system has become more and more significant. Various types of UPS systems provide reliable power guarantee for data centers, ensuring data integrity and continuous operation of equipment.
Whether it is a first-class UPS, a double-conversion UPS, or a modular UPS, each type has its own unique characteristics and usage scenarios. Data center operators need to consider the most suitable UPS system based on their actual needs and budget. Through reasonable design, regular maintenance and sensitive monitoring, data centers can rely on UPS systems to achieve efficient and reliable power** and provide users with stable and secure data services.
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