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Direct current power supply for mission critical applications

  • US 8,325,504 B2
  • Filed: 09/18/2009
  • Issued: 12/04/2012
  • Est. Priority Date: 09/18/2009
  • Status: Expired due to Fees
First Claim
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1. A direct current power supply apparatus, comprising:

  • a plurality of transmutor modules;

    current and voltage sensors connected to an output of each of said transmutor modules;

    a droop controller connected to said output of each of said transmutor modules;

    a respective compensation device connected to each droop controller for adjusting an output voltage of each transmutor module under control of said droop controller; and

    a low bandwidth communications link connecting said droop controllers for sharing current data,wherein the droop controller implements a droop algorithm for respectively adjusting said module output voltages to compensate for droop at the respective module outputs, andsaid droop controller also implements a virtual bus algorithm in parallel with said droop algorithm for adjusting an output current by a correction factor calculated according to current data supplied by said low bandwidth communications link, said virtual bus algorithm being used solely for recalibration due to long term drifts.

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