LPS architecture for UPS systems
First Claim
1. An Uninterruptible Power Supply (UPS) system, the UPS comprising:
- a transformer including;
a first primary winding configured to be coupled to a DC power source;
a second primary winding configured to be coupled to an AC power source; and
at least one secondary winding;
control logic coupled to the first primary winding and the second primary winding; and
at least one output line coupled to the at least one secondary winding,wherein the control logic is configured, in a first mode of operation, to enable the first primary winding to generate, based on power received from the DC power source, a first output voltage at the at least one output line, and to disable the second primary winding, andwherein the control logic is configured, in a second mode of operation, to enable the second primary winding to generate, based on power received from the AC power source, a second output voltage at the at least one output line, and to disable the first primary winding.
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Accused Products
Abstract
According to one aspect, embodiments herein provide a UPS comprising a transformer including a first primary winding configured to be coupled to a DC source, a second primary winding configured to be coupled to an AC source, and at least one secondary winding, control logic, and at least one output line, wherein the control logic is configured, in a first mode of operation, to enable the first primary winding to generate, based on power received from the DC source, a first output voltage at the at least one output line, and to disable the second primary winding, and wherein the control logic is configured, in a second mode of operation, to enable the second primary winding to generate, based on power received from the AC source, a second output voltage at the at least one output line, and to disable the first primary winding.
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Citations
20 Claims
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1. An Uninterruptible Power Supply (UPS) system, the UPS comprising:
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a transformer including; a first primary winding configured to be coupled to a DC power source; a second primary winding configured to be coupled to an AC power source; and at least one secondary winding; control logic coupled to the first primary winding and the second primary winding; and at least one output line coupled to the at least one secondary winding, wherein the control logic is configured, in a first mode of operation, to enable the first primary winding to generate, based on power received from the DC power source, a first output voltage at the at least one output line, and to disable the second primary winding, and wherein the control logic is configured, in a second mode of operation, to enable the second primary winding to generate, based on power received from the AC power source, a second output voltage at the at least one output line, and to disable the first primary winding. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for providing DC power with an UPS system comprising a transformer including a first primary winding configured to be coupled to a DC power source, a second primary winding configured to be coupled to an AC power source, and at least one secondary winding coupled to an output line, the method comprising:
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monitoring, with control logic coupled to the DC power source, voltage provided by the DC power source to the first primary winding; comparing, in response to monitoring, the voltage provided by the DC power source to a reference voltage; determining, in response to comparing, whether a level of the voltage provided by the DC power source is at least equal to the reference voltage; in response to determining that the level of the voltage provided by the DC power source is at least equal to the reference voltage, transmitting a signal to a first controller coupled to the first primary winding to enable the first controller, and transmitting a signal to a second controller coupled to the second primary winding to disable the second controller; and operating, in response to enabling the first controller, the first controller to control current from the DC power source through the first primary winding to induce a first current in the at least one secondary winding, the first current in the at least one secondary winding generating a first output voltage on the output line. - View Dependent Claims (16, 17, 18, 19)
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20. An Uninterruptible Power Supply (UPS), the UPS comprising:
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an input configured to be coupled to an AC mains supply; a converter coupled to the input; an inverter coupled to the converter with a DC bus; a DC power source coupled to the DC bus; a transformer coupled to the AC mains supply and the DC power source; and means for selecting one of the AC mains supply and the DC power source at a time to provide power to the transformer and for generating a plurality of desired DC voltages with the transformer based on the power received from the selected one of the AC mains supply and the DC power source.
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Specification