Apparatus, system, and method for maximizing power system holdup time during loss of input power
First Claim
1. An apparatus to maximize power system holdup time during loss of input power, the apparatus comprising:
- an energy storage module configured to deliver energy from an output stage of a first power supply to a bus;
a power loss module configured to detect loss of power transmitting capability from an input stage of the first power supply to the output stage of the first power supply;
a set-point reduction module configured to reduce an output voltage of the first power supply in response to the power loss module detecting loss of power transmitting capability; and
an isolation module configured to prevent energy flow from the energy storage module to the bus when the output voltage of the first power supply is lower than a voltage on the bus sustained by a second power supply.
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Abstract
An apparatus, system, and method are disclosed for maximizing power system holdup time during loss of input power. An energy storage module is included to deliver energy from an output stage of a first power supply to a bus. A power loss module is included to detect loss of power transmitting capability from an input stage of the first power supply to the output stage of the first power supply. A set-point reduction module is included to reduce an output voltage of the first power supply in response to the power loss module detecting loss of power transmitting capability. An isolation module is included to prevent energy flow from the energy storage module to the bus when the output voltage of the first power supply is lower than a voltage on the bus sustained by a second power supply.
34 Citations
20 Claims
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1. An apparatus to maximize power system holdup time during loss of input power, the apparatus comprising:
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an energy storage module configured to deliver energy from an output stage of a first power supply to a bus;
a power loss module configured to detect loss of power transmitting capability from an input stage of the first power supply to the output stage of the first power supply;
a set-point reduction module configured to reduce an output voltage of the first power supply in response to the power loss module detecting loss of power transmitting capability; and
an isolation module configured to prevent energy flow from the energy storage module to the bus when the output voltage of the first power supply is lower than a voltage on the bus sustained by a second power supply. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system to maximize power system holdup time during loss of input power, the system comprising:
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a bus;
a first power supply connected to the bus comprising an energy storage module configured to deliver energy from an output stage of the first power supply to the bus;
a power loss module configured to detect loss of power transmitting capability from an input stage of the first power supply to the output stage of the first power supply;
a set-point reduction module configured to reduce an output voltage of the first power supply in response to the power loss module detecting loss of power transmitting capability; and
an isolation module configured to prevent energy flow from the energy storage module to the bus when the output voltage of the first power supply is lower than a voltage on the bus; and
a second power supply connected to the bus configured to sustain the voltage on the bus when the isolation module prevents energy flow from the energy storage module to the bus. - View Dependent Claims (11, 12, 13, 14, 15)
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16. An apparatus to maximize power system holdup time during loss of input power, the apparatus comprising:
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means for delivering energy from an output stage of a first power supply to a bus;
means for detecting loss of power transmitting capability from an input stage of the first power supply to the output stage of the first power supply;
means for reducing an output voltage of the first power supply in response to detecting loss of power transmitting capability; and
means for preventing energy flow from the output stage of the first power supply to the bus when the output voltage of the first power supply is lower than a voltage on the bus sustained by a second power supply. - View Dependent Claims (17, 18, 19, 20)
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Specification