Historically, AC loads have been a small proportion of the total power requirements in most telecom organizations. That explains why they initially were powered by converting DC into AC via an inverter.
With the growth of IT in telecom and other industries however, AC loads such as power routers, servers and other equipment have developed.
As the absolute number and proportion of AC loads in the energy mix has increased, there has been a natural tendency to draw power directly from the grid and rely on UPS for back-up and filtering. Increasingly, however, organizations are encountering three major problems with this approach.
First of all, while they may entail a lower initial outlay in terms of capital expenditure (CAPEX), UPS require more maintenance and tend to have a shorter lifetime than other solutions. The battery in a UPS typically has a 3 year lifetime whereas batteries in DC infrastructures may have a lifetime of 15 or even 20 years. The internal charging process in a UPS tends to shorten the battery’s lifetime. In short, with a UPS, operating expenditures (OPEX) tend to be higher and thus they have a higher total cost of ownership (TCO) than other solutions.
Secondly, UPS are often seen as a “black box”, the inner workings of which are better understood by the manufacturer than by the power or facilities management departments of most organizations. This leads to higher Operating Expenses due to the outsourcing of the servicing and maintenance.
This in turn points to a third important issue: maintaining two wholly separate energy regimes in an organization adds complexity and cost. The company must manage two separate “power chains”: an AC to DC load and an AC to AC load.
Since a chain is only as strong as its weakest link, this added complexity increases the likelihood of failure and may result in a company or organization being unable to meet contractual performance standards as defined in service level agreements (SLAs).
Moreover, maintaining two separate energy chains requires two different types of competences and often leads to the setup of two separate departments. All of this just increases cost and complexity.
Leveraging the existing DC infrastructure therefore seems the right way to go!
Learn how CE+T Power‘s Enhanced Power conversion can help in this situation : read our Whitepaper!