SYSTEMS FOR AND METHODS OF CONTROLLING OPERATION OF A UPS
First Claim
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1. A method of controlling a voltage of a DC bus included in an uninterruptible power supply (“
- UPS”
), the UPS including power factor control circuitry coupled to the DC bus, and an AC output, the method comprising acts of;
determining a difference between instantaneous power supplied to the AC output at a first time and instantaneous power supplied to the AC output at a second time; and
adjusting an operation of the power factor control circuitry to adjust the voltage of the DC bus based, at least partly, on the difference.
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Abstract
A UPS includes an AC output, power factor control circuitry; and a DC bus coupled to the power factor control circuitry where the power factor control circuitry is configured to determine a difference in instantaneous power supplied to the AC output and to adjust a voltage of the DC bus based, at least partly, on the difference. In one embodiment, the UPS includes a single phase AC input. In another embodiment, the power factor control circuitry is configured to determine a cumulative difference in instantaneous power supplied to the AC output.
41 Citations
35 Claims
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1. A method of controlling a voltage of a DC bus included in an uninterruptible power supply (“
- UPS”
), the UPS including power factor control circuitry coupled to the DC bus, and an AC output, the method comprising acts of;determining a difference between instantaneous power supplied to the AC output at a first time and instantaneous power supplied to the AC output at a second time; and adjusting an operation of the power factor control circuitry to adjust the voltage of the DC bus based, at least partly, on the difference. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- UPS”
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14. An uninterruptible power supply (“
- UPS”
) comprising;an AC output; power factor control circuitry; and a DC bus coupled to the power factor control circuitry, wherein the power factor control circuitry is configured to determine a difference in instantaneous power supplied to the AC output and to adjust a voltage of the DC bus based, at least partly, on the difference. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
- UPS”
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25. A uninterruptible power supply (“
- UPS”
) comprising;a DC bus; an AC output; means, coupled to the DC bus, for controlling a voltage of the DC bus based on a difference in instantaneous power supplied to the AC output. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
- UPS”
Specification