Modeling of one-cycle controlled switching converters

The generality of the one-cycle control technique is demonstrated by description of its implementation for different DC-DC switching converters. It is a nonlinear control technique with significant advantages in terms of rejection of line perturbation, speed of response and insensitivity to circuit parameters. A stability analysis of a one-cycle controlled Cuk converter (a fourth-order system) is performed, showing that stability depends on the values of parasitic elements. A modification of the control to eliminate steady-state output voltage error is proposed. A modification of the control that ensures stability independent of the value of parasitic elements is suggested. All theoretical results are experimentally verified