Multiple discharge load electronic ballast system
First Claim
20. A multiple discharge load electronic ballast system, comprising:
- 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.
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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
31 Claims
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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 (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 23, 24, 25, 26, 29, 30)
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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 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)
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29-1. The method of claim 25, wherein the step of responsively generating the respective AC ballast output comprises converting the DC distribution output into a respective local DC voltage output.
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30-2. The method of claim 29, wherein the step of responsively generating the respective AC ballast output comprises inverting the respective local DC voltage output into the respective AC ballast output.
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31. 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 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