Single-wire current-share paralleling of current-mode-controlled DCpower supplies
Chang-Shiarn Lin
Chern-Lin Chen
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ;
This paper appears in: Industrial Electronics, IEEE Transactions on
Publication Date: Aug 2000
Volume: 47,
Issue: 4
On page(s): 780-786
ISSN: 0278-0046
References Cited: 22
CODEN: ITIED6
INSPEC Accession Number: 6685864
Digital Object Identifier: 10.1109/41.857958
Current Version Published: 2002-08-06
Abstract
This paper presents a new single-wire autonomous current-share
paralleling of current-mode-controlled DC power supplies. The proposed
control scheme makes use of the nature of fast response of the inner
current loop and the share bus injected signal to improve the response
of the power supplies. It reduces the unbalance of current distribution
during the transient state and avoids the fault alarm for the current
limit. Through the theoretical derivation, the proposed control circuit
can be designed by the three-loop control method. A design example of
two 400 V/48 V 20 A parallel modules is set up and experimental
recordings verify the performance of current sharing
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