Stability Analysis and Control of Nonlinear Behavior in V2 Switching Buck Converter

Mismatch between switching frequency and circuit parameters often occurs in industrial applications, which would lead toinstability phenomena. The bifurcation behavior of V2 controlled buck converter is investigated as the pulse width modulation periodis varied. Nonlinear behavior is analyzed based on the monodromy matrix of the system. We observed that the stable period-1 orbitwas first transformed to the period-2 bifurcation, which subsequently changed to chaos. The mechanism of the series of period-2bifurcations shows that the characteristic eigenvalue of the monodromy matrix passes through the unit circle along the negative realaxis. Resonant parametric perturbation technique has been applied to prevent the onset of instability. Meanwhile, the extendedstability region of the converter is obtained. Simulation and experimental prototypes are built, and the corresponding results verifythe theoretical analysis.

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Cite this article

[IEEE Style]

W. Hu, F. Zhang, X. Long, X. Chen, W. Deng, "Stability Analysis and Control of Nonlinear Behavior in V2 Switching Buck Converter," Journal of Power Electronics, vol. 14, no. 6, pp. 1208-1216, 2014. DOI: 10.6113/JPE.2014.14.6.1208.

[ACM Style]

Wei Hu, Fangying Zhang, Xiaoli Long, Xinbing Chen, and Wenting Deng. 2014. Stability Analysis and Control of Nonlinear Behavior in V2 Switching Buck Converter. Journal of Power Electronics, 14, 6, (2014), 1208-1216. DOI: 10.6113/JPE.2014.14.6.1208.