UNINTERRUPTIBLE POWER SUPPLY
0 Assignments
0 Petitions
Accused Products
Abstract
An uninterruptible power supply (UPS) system includes an AC power input configured to receive AC power from a single-phase AC power source or a multi-phase AC power source, a DC power source, an output circuit including a power output, a controllable switch configured to selectively couple at least one of the AC power input and the DC power source to the output circuit, and a processor coupled and configured to affect operation of the output circuit depending upon which of single-phase and multi-phase operation of the UPS is indicated.
58 Citations
66 Claims
-
1-46. -46. (canceled)
-
47. A short-circuit response device for use in an uninterruptible power supply (UPS) system, the device comprising:
-
an inverter coupled to an output of power circuitry of the UPS, the inverter including an output configured to be coupled to a load to provide power to the load; and a processor coupled to the inverter and configured to turn off the inverter if the inverter is determined to be coupled to a short circuit for longer than a threshold amount of time, wherein a determination of whether the inverter is coupled to the short circuit is based on a waveshape of an output voltage of the inverter. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54)
-
-
55. A method of short circuit protection for an uninterruptible power supply (UPS) that includes an inverter having an output which is coupled to a load, the method comprising acts of:
-
monitoring a waveshape of an output voltage of the inverter to determine whether the load includes a short circuit; turning the inverter off if the waveshape of the output voltage indicates that the short circuit exists; and providing a predetermined threshold amount of time that the waveshape indicates the short circuit exists before turning the inverter off. - View Dependent Claims (56, 57, 58, 59, 60, 61, 62)
-
-
63. A short-circuit response device for use in an uninterruptible power supply (UPS) system, the device comprising:
-
an inverter coupled to an output of power circuitry of the UPS, the inverter including an output configured to be coupled to a load to provide power to the load; means for monitoring a waveshape of an output voltage of an inverter to determine whether the inverter is coupled to a short circuit for longer than a threshold amount of time; and means for turning off the inverter responsive to a determination that the inverter is coupled to the short circuit for longer than the threshold amount of time. - View Dependent Claims (64, 65, 66)
-
Specification