Nested Redundant Uninterruptible Power Supply Apparatus and Methods
First Claim
Patent Images
1. An uninterruptible power supply (UPS) system, comprising:
- at least three UPSs configured to be connected in parallel to a common load; and
control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs.
4 Assignments
0 Petitions
Accused Products
Abstract
An uninterruptible power supply (UPS) system includes at least three UPSs configured to be connected in parallel to a common load. The system further includes control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. In this manner, a nested redundancy may be provided.
-
Citations
21 Claims
-
1. An uninterruptible power supply (UPS) system, comprising:
-
at least three UPSs configured to be connected in parallel to a common load; and control circuitry configured to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 11, 12, 13)
-
-
9. A UPS assembly, comprising:
-
a frame; a plurality of UPS modules mounted in and/or on the frame; an first digital communications bus coupled to each of the UPS modules; and a control circuit mounted in and/or on the frame, coupled to the first digital communications bus and configured to be coupled to a second digital communications bus, the control circuit operative to communicate AC waveform synchronization information to the UPS modules over the first digital communications bus and to another UPS assembly over the second digital communications bus. - View Dependent Claims (10, 14, 15, 16)
-
-
17. A method of operating an uninterruptible power supply (UPS) system, comprising:
-
connecting at least three UPSs in parallel to a common load; and controlling the at least three UPSs to support at least two redundant groups among the UPSs and to support at least two redundant subgroups among at least one of the redundant groups of UPSs. - View Dependent Claims (18, 19, 20, 21)
-
Specification