Democratic Current Sharing Aids Redundancy

by Greg Zvonar, Principal Design Engineer and Andrew Ferencz, Vice President Technology, Galaxy Power, Westborough, Mass., Power Electronics Technology, Mar 01 2005

Focus:
When using multiple power converters to build a power system with redundancy implementing current sharing helps to distribute power losses and maintain output voltage regulation during fault conditions. Among the different current sharing techniques that may be applied, democratic current sharing offers several performance advantages.

What you’ll learn:

• How to understand the operation and tradeoffs of different current sharing schemes including droop sharing, master/slave sharing, and democratic current sharing
• How to implement democratic current sharing among redundant power converters (overview)

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