Multiple discharge load electronic ballast system
First Claim
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1. A multiple discharge load electronic ballast system, comprising:
- a utility interface comprising a utility input, a direct current (DC) distribution output, and a nominal distribution power rating at the DC distribution output;
a distribution bus, operatively coupled to the DC distribution output; and
a plurality of electronic ballasts, operatively coupled to the distribution bus, wherein a respective electronic ballast comprises adaptations for respective local DC voltage control and an alternating current (AC) end output and has a maximum ballast power rating at the AC end output, wherein a sum of the maximum ballast power ratings of the plurality of electronic ballasts is greater than the nominal distribution power rating of the utility interface.
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Abstract
An embodiment of the present invention pertains to a multiple discharge load electronic ballast system, including a distribution bus and a plurality of electronic ballasts. The distribution bus has a nominal distribution power rating. The plurality of electronic ballasts are operatively coupled to the distribution bus. A respective electronic ballast comprises adaptations for DC voltage control and an alternating current (AC) output, and has a maximum ballast power rating. A sum of the maximum ballast power ratings of the plurality of electronic ballasts is greater than the nominal distribution power rating of the distribution bus.
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Citations
32 Claims
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1. A multiple discharge load electronic ballast system, comprising:
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a utility interface comprising a utility input, a direct current (DC) distribution output, and a nominal distribution power rating at the DC distribution output; a distribution bus, operatively coupled to the DC distribution output; and a plurality of electronic ballasts, operatively coupled to the distribution bus, wherein a respective electronic ballast comprises adaptations for respective local DC voltage control and an alternating current (AC) end output and has a maximum ballast power rating at the AC end output, wherein a sum of the maximum ballast power ratings of the plurality of electronic ballasts is greater than the nominal distribution power rating of the utility interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A multiple discharge load electronic ballast system, comprising:
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means for receiving electrical power from a utility source and responsively providing a direct current (DC) distribution voltage having a nominal distribution power; means for distributing the DC distribution voltage to multiple distributed outputs; means for converting the DC distribution voltage at each distributed output into a respective local DC voltage output; and means for inverting each respective local DC voltage output into a respective alternating current (AC) end output having a peak power, wherein the nominal distribution power is less than a sum of the peak power of each of the AC end outputs. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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27. A method of providing electrical power to multiple discharge loads, comprising the steps of:
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converting electrical power from a utility source to a DC distribution output, having a nominal distribution power; distributing the DC distribution output to a plurality of electronic ballasts, each of which has a maximum ballast power rating, wherein the nominal distribution power is less than a sum of the maximum ballast power ratings; receiving the DC distribution output at each electronic ballast, converting the DC distribution output into a respective local DC voltage output and responsively generating a respective AC ballast output having a voltage and a current that are sufficient for igniting and operating a discharge load; and providing each of the discharge loads with one of the AC ballast outputs. - View Dependent Claims (28, 29, 30, 31)
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32. A multiple discharge load electronic ballast system, comprising:
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a distribution bus having a nominal distribution power rating; and a plurality of electronic ballasts, operatively coupled to the distribution bus, wherein a respective electronic ballast comprises adaptations for respective local DC voltage control and an alternating current (AC) output, and has a maximum ballast power rating; and
wherein a sum of the maximum ballast power ratings of the plurality of electronic ballasts is greater than the nominal distribution power rating of the distribution bus.
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Specification