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

Claim 11:
12. A system comprising:
an DC bus;
an auxiliary power source coupled to the DC bus;
an energy storage device of a different type than the auxiliary power source;
a first (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; and

a second UPS,
wherein an AC port of the first UPM is coupled to a first input of an automatic transfer switch (ATS) and wherein an AC power source is coupled to a second input of the ATS, wherein an output of the ATS is connected to a first AC port of the second UPS and wherein a second port of the second UPS is connected to the AC load and to an AC port of the second UPM of the first UPS.