Distributed power supply system and method
First Claim
Patent Images
1. A distributed power supply system, comprising:
- a plurality of power storage units;
a plurality of DC power supply units, each particular DC power supply unit of the plurality of DC power supply units corresponding to one particular power storage unit of the plurality of power storage units, each particular DC power supply unit being operable in at least one of;
a first mode when the particular DC power supply unit receives mains power, the particular DC power supply unit converts mains power to DC power and provides DC power to at least one electrical device coupled to the particular DC power supply unit; and
a second mode when the particular DC power supply unit does not receive mains power, the particular DC power supply unit draws DC power from its corresponding power storage unit and provides DC power to the at least one electrical device coupled to the particular DC power supply unit; and
a power supply controller in communication with each of the plurality of power storage units, the power supply controller configured for controlling output power of each of the plurality of power storage units by optimizing output power of each of the plurality of power storage units based on status of charge (SOC) C and load L of each of the plurality of power storage units,wherein optimizing output power of each of the plurality of power storage units based on SOC and load of each of the plurality of power storage units further comprises;
for each power storage unit i of the plurality of power storage units, determining whether power storage unit i have sufficient SOC based on Ci−
Li≧
Cthreshold and calculating a supplemental power Δ
Li=Li−
Ci+Cthreshold when power storage unit i have insufficient SOC;
determining an optimal solution for an optimization function defined as;
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Abstract
A distributed power supply system and a method for managing such a distributed power supply system is disclosure. The method may include: for each power storage unit i of the plurality of power storage units, determining whether power storage unit i have sufficient status of charge (SOC) based on SOC of the power storage unit i (Ci), and load of the power storage unit i (Li); identifying a set of power storage units that have insufficient SOC; and adjusting output power of the power storage units that have sufficient SOC to provide supplemental power to the set of power storage units that have insufficient SOC.
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Citations
10 Claims
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1. A distributed power supply system, comprising:
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a plurality of power storage units; a plurality of DC power supply units, each particular DC power supply unit of the plurality of DC power supply units corresponding to one particular power storage unit of the plurality of power storage units, each particular DC power supply unit being operable in at least one of; a first mode when the particular DC power supply unit receives mains power, the particular DC power supply unit converts mains power to DC power and provides DC power to at least one electrical device coupled to the particular DC power supply unit; and a second mode when the particular DC power supply unit does not receive mains power, the particular DC power supply unit draws DC power from its corresponding power storage unit and provides DC power to the at least one electrical device coupled to the particular DC power supply unit; and a power supply controller in communication with each of the plurality of power storage units, the power supply controller configured for controlling output power of each of the plurality of power storage units by optimizing output power of each of the plurality of power storage units based on status of charge (SOC) C and load L of each of the plurality of power storage units, wherein optimizing output power of each of the plurality of power storage units based on SOC and load of each of the plurality of power storage units further comprises; for each power storage unit i of the plurality of power storage units, determining whether power storage unit i have sufficient SOC based on Ci−
Li≧
Cthreshold and calculating a supplemental power Δ
Li=Li−
Ci+Cthreshold when power storage unit i have insufficient SOC;determining an optimal solution for an optimization function defined as; - View Dependent Claims (2, 3, 4)
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5. A method for managing a distributed power supply system, the distributed power supply system including a plurality of power storage units, the method comprising:
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for each power storage unit i of the plurality of power storage units, determining whether power storage unit i have sufficient status of charge (SOC) based on whether SOC of the power storage unit i (Ci) minus load of the power storage unit i (Li) is less than a predetermined SOC threshold; identifying a set of power storage units that have insufficient SOC; calculating a supplemental power needed for each power storage unit i in the set of power storage units that have insufficient SOC; determining an optimal solution for providing the supplemental power needed for each power storage unit i in the set of power storage units that have insufficient SOC, wherein the optimal solution is determined as a solution for an optimization function; and adjusting output power of the power storage units that have sufficient SOC to provide supplemental power to the set of power storage units that have insufficient SOC based on the determined optimal solution, wherein the optimization function is defined as; - View Dependent Claims (6, 7, 8)
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9. A method for managing a distributed power supply system, the distributed power supply system including a plurality of power storage units, the method comprising:
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for each power storage unit i of the plurality of power storage units, determining whether power storage unit i have sufficient status of charge (SOC) based on SOC of the power storage unit i (Ci), and load of the power storage unit i (Li); identifying a set of power storage units that have insufficient SOC; calculating a supplemental power Δ
Li=Li−
Ci+Cthreshold when power storage unit i have insufficient SOC;determining an optimal solution for an optimization function defined as; - View Dependent Claims (10)
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Specification