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Boundary equilibrium bifurcations in piecewise smooth discontinuous systems are characterized by the collision of an equilibrium point with the discontinuity surface. Generically, these bi-furcations are of codimension one, but there are scenarios where the phenomenon can be of higher codimension. Here, the possible collision of a non-hyperbolic equilibrium(More)
— The direct current (dc) microgrids are an option to new demands for power quality and integration of renewable resources in developing regions, where the main network is unavailable. However, the dc architecture is based on multi-stage power converters where point-of-load converters can be seen by the feeder converter as constant power loads (CPLs). This(More)
Bifurcation analysis of nonlinear control systems supplies a global perspective of the system behaviour modes. In this paper, it is shown that this analysis can be implemented with very elementary and classical tools, such as frequency-domain graphical methods. T he methodology proposed is illustrated analysing the ee ects of a saturation non-linearity on a(More)