Direct-coupled IT load

This invention describes a power system for data centers where each server rack unit has its own built-in uninterruptible power supply (UPS). This UPS takes AC power directly from the main utility grid, without any prior AC-to-DC conversion, and converts it once to DC power for the server's internal circuits. A battery is connected to this DC power line to provide backup power if the main AC fails, with a controller managing its connection.

Why it matters: Filed before significant advancements in battery technology and power semiconductor efficiency. These improvements now make the integrated, highly efficient AC-to-DC conversion and battery backup described more practical and cost-effective for large-scale data centers.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedCustom power electronics, battery management, control logic

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