Electric energy converter development and diagnostics in mixed-signal simulation environment
In this work the input and output capacitors of a digitally controlled Buck converter have been tested in 4 different cases with unused and worn out capacitors. The information extracted from interactions between the subsystems of an electric energy conversion system requires the implementation of the whole system from network to load. A complex simulation environment has been implemented where digital and analogue domains can be connected. The input and output capacitor aging have a significant influence on time domain characteristics, but the evaluation of frequency-domain data is supposed to be required to extract information from the noisy and distorted time-domain signal. The presented diagnostic approach aims to analyze signals that are used by the control loop in order to avoid expensive additions to existing circuits.
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