In this paper, all operating modes of the ac-dc Cuk converter have been modeled as linear-time invariant systems where some of the modes were not only modeled but also detected for the first time. Another feature provided in this paper is that the converter can be modeled and analyzed as a switching dynamical system controlled by an external constant duty-ratio switching and the internal switchings shown to be related to the minimum among the time derivatives of a common quadratic Lyapunov function. Some representative simulations are provided to illustrate and validate the technical results of this paper.
|Journal||IEEE Journal of Emerging and Selected Topics in Power Electronics|
|Publication status||Published - Jun 2019|
- AC-DC converter
- Lyapunov stability analysis
- switching dynamical systems