CPC H02J 9/068 (2020.01) [H02J 9/062 (2013.01); H02J 2300/30 (2020.01)] | 12 Claims |
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.
|