Abstract
A unified equivalent modeling approach is proposed for enabling simple and effective analysis of stability of parallel-connected buck converters. Two kinds of active current-sharing schemes are considered, i.e., the masterslave scheme and democratic scheme. By applying elementary transformation to the Jacobian of the averaged model, two decoupled subsystems (which determine common-mode and differential-mode stabilities, respectively) have been found, irrespective of the specific type of active current-sharing scheme. From the decoupled subsystems, the parameters of interest that affect different stability issues are clearly identified. Results from this work greatly simplify the stability analysis and design of parallel-connected dcdc converters.
| Original language | English |
|---|---|
| Article number | 5613924 |
| Pages (from-to) | 898-902 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Circuits and Systems II: Express Briefs |
| Volume | 57 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2010 |
Keywords
- Active current sharing
- averaged model
- bifurcation
- parallel-connected buck converters
- stability
ASJC Scopus subject areas
- Electrical and Electronic Engineering