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Adaptability of different types of UPS power supplies to data center requirements
23 Feb 2024

From the perspective of data center requirements, the best UPS should have the characteristics of elastic expansion, high availability, efficiency, high density, and intelligence. According to this standard, a comparison is made between the power frequency UPS, high frequency UPS and modular UPS commonly used in data centers.


Adaptability table of different types of UPS to data center requirements:


Power frequency UPS
High Frequency UPS
Modular UPS
Power frequency UPS Difficult to expand on demand Difficult to expand on demand Expand on demand
Elastic expansion The availability is low. Once the failure operation and maintenance personnel cannot handle it, the original factory maintenance is required, and the failure recovery time is long. The availability is low. Once the failure operation and maintenance personnel cannot handle it, the original factory maintenance is required, and the failure recovery time is long. High availability, N+X redundancy achieves higher reliability; operation and maintenance personnel can replace faulty module to eliminate faults.
Availability Low, low load rate and harmonic control measures cause the operating efficiency to be far lower than the declared efficiency, and the operating efficiency is generally around 85%. High, the operating efficiency is generally 90%~94% typical High,generally adopt low-load design,the typical value is 95%.The operation efficiency can reach 96% when the module N+X redundant configuration
Efficiency

Low, low load rate and harmonic control measures cause the operating efficiency to be far lower than the declared efficiency, and the operating efficiency is generally around 85%.
Higher,the efficiency will be improved after the transformer is cancelled. Higher, generally higher efficiency,easier to achieve greater power density
Power density Low, the built-in transformer is used to boost the voltage and generate the neutral line, and the power density is difficult to increase Higher,the efficiency will be improved after the transformer is cancelled. Higher, generally higher efficiency, easier to achieve greater power density
Intelligent degree Depends on the design, but the main manufacturers of power frequency UPS have stopped research and development in recent years,and the degree of intelligence is relatively low depends on design Depends on design. Generally, it is a high-end product of various manufacturers, with a high degree of intelligence
Matching degree Mismatch nerally match


It can be seen from the table that it is difficult for power frequency UPS to match the needs of data centers in terms of scalability, availability, efficiency and power density. Modularity, on the other hand, excels in these aspects and will surely become the mainstream choice for uninterruptible power supply systems in data centers.


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