Patent ID: 11955838
Assignee: EATON INTELLIGENT POWER LIMITED
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. A system comprising:
a DC bus;
an auxiliary power source coupled to the DC bus;
an energy storage device of a different type than the auxiliary power source; and
a modular uninterruptible power supply (UPS) comprising:
a first uninterruptible power module (UPM) coupled to the DC bus and configured to provide power to an AC load from the auxiliary power source; and
a second UPM coupled to the DC bus and the energy storage device and configured to compensate for a delay of a load step response of the auxiliary power source by transferring energy between the DC bus and the energy storage device to regulate a voltage on the DC bus, wherein an AC port of the first UPM is coupled to a first input of an automatic transfer switch (ATS), wherein an AC power source is coupled to a second input of the ATS, and wherein the ATS is configured to selectively provide power from the first UPM and the AC power source to a load connected to an output of the ATS.