A structural flow for modeling of switched electrical circuits by means of an example a switched DC/DC converter will be presented. The modeling flow has a minimal amount of hand calculations and is suitable for script implementation in suitable mathematical computer software such as Matlab or similar. Switched Hamiltonian Differential Algebraic Equation models and Differential Equation models are obtained which are suitable for analysis in the time domain. Linear models, which can be transformed to the frequency domain for analysis, are obtained from the Hamiltonian models. The duty cycle will be included in the input vector enabling the full system analysis considering the system transfer functions audio susceptibility, output impedance, and control, i.e., the duty cycle to output voltage.
En metod för modellering av switchade elektriska kretsar presenteras och används för att modellera elektriska kraftomvandlare.