Scalable UPS topology for the arrival of Big Data

Everybody is talking about Big Data. The term describes the explosion in data generated from multiple sources. One the one hand Big Data presents great opportunities for organizations and companies, on the other hand data center operators need a strategy for this large and sometimes unpredictable growth.

In a recently published article Kenny Green, technical support manager at Uninterruptible Power Supplies Ltd, takes a look at UPS topologies that help data centers meet the challenges.

In his words, scalable UPS topology is the best choice to be prepared for the arrival of Big Data. It benefits from major advances in semiconductor technology.


„UPS industry peer systems were built around a phase-controlled rectifier inverter and output transformer. Using modern IGBT semiconductors, more recent systems comprise a fixed rectifier followed by a DC converter. This converter boosts the rectifier output voltage fed to the inverter, allowing it to produce an AC output voltage sufficient to drive the load directly, thus eliminating the transformer.


Transformerless design has several important advantages over transformer-based implementations. Efficiency is immediately improved by about 5%, which, in turn, substantially reduces heat loss and operating costs. Other benefits include improved input power factor, reduced input current harmonic distortion, lower audible noise. However, another key benefit is a substantial reduction in the UPS’s size and weight.


The flexibility and easy scalability afforded by modular UPS topology are valuable tools for data center operators engaged in managing Big Data. By using vertical scaling within a UPS rack as described, they make efficient use of their data center room, adding UPS capacity without increasing floor space.“

The bottom line of the article:

„There are many reasons why modular UPS topology offers an attractive way forward for data center operators needing to accommodate or plan for Big Data and its associated impact on capacity demand. Provision can be made for large scale and unpredictable growth, without having to purchase hardware unless or until it is needed. When extra capacity does become essential, it can be installed quickly, easily and without disruption to the critical load.”

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