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Bifurcation Mechanism and Stabilization of V2C Controlled Buck Converter
- Source :
- IEEE Access, Vol 7, Pp 77174-77182 (2019)
- Publication Year :
- 2019
- Publisher :
- IEEE, 2019.
-
Abstract
- The V2C controlled buck converter by constant-frequency pulse-width modulation in continuous conduction mode gives rise to a great variety of instability behaviors, depending on the circuit parameter values. In this paper, the discrete-time model of the regulator is built by taking a current sampling resistor into consideration. The resulting Monodromy matrix is used to investigate the bifurcation phenomenon and stabilization property. The converter shows a series of period-doubling bifurcation phenomena accordingly as the feedback amplification coefficient increases. At the same time, a couple of Floquet multipliers pass through the unit circle along the negative real axis. Therefore, it reveals the mechanism of a series of period-doubling bifurcations happened in the system from the perspective of stability. Based on Floquet theory, a sine voltage compensation method is proposed to stabilize the bifurcation and chaotic behaviors. The simulations and experimental results proved the theoretical analysis.
Details
- Language :
- English
- ISSN :
- 21693536
- Volume :
- 7
- Database :
- Directory of Open Access Journals
- Journal :
- IEEE Access
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.372ae3f2725b418ead4a89b58ef410a5
- Document Type :
- article
- Full Text :
- https://doi.org/10.1109/ACCESS.2019.2918297