Modeling and simulation of power conditioning equipment containing saturable inductors using a personal computer

The authors present a technique for the simulation of power-conditioning equipment containing saturable inductors. An ideal sampler, variable gain, and clamp are used to model the saturable inductor. A state variable is assigned to this group of elements. A linear homogeneous state model is formulated and solved using the state-transition-matrix approach. The state variable associated with the sampler, gain, and clamp are held constant for the solution of the state model. These added states are updated using a jump matrix and nonlinear description function. The solution achieved using the technique compares favorably with the solution obtained from a simulation using the Electromagnetic Transients Program