Computer aided sensitivity-analysis of power electronic control systems and its applications

Proposed are computer-aided algorithms for computing sensitivities for power electronic control systems with closed-loop control circuits. It is pointed out that, in the sensitivity analysis of closed-loop power electronic systems, it is necessary to analyze sensitivities with respect not only to usual circuits parameters but also to the switching states of the power semiconductor devices determined by the triggering signals. The adjoint network approach is extended in order to compute the sensitivities with respect to both the usual circuit parameters and triggering signals of power semiconductors. An optimal design method by using the sensitivity calculations is also developed