Large-signal control of a bidirectional coupled-inductor Cuk converter via pseudolinearization

The analysis and design of a nonlinearly controlled Cuk converter with magnetic coupling between inductors is presented. The nonlinear control is derived via pseudolinearization, providing a perturbed average model which is independent of the operating point exhibiting a linear structure in Brunovsky´s canonical form. As a result, the output variable follows proportionally a reference signal, allowing the different types of power waveforms in the converter output to be obtained.