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In this paper a simplified model based on the exact discrete-time map of a buck switching power converter with proportional control, which captures all its dynamics, allows deriving a closed-form stability condition for predicting fast-scale instability boundary. This condition analytically demonstrates the validity of the recently proposed ripple-based index to predict fast-scale period-doubling,...
Stability analysis of the DC-DC power electronic system is analyzed in this paper using a G-parameter approach. For demonstration boost converter cascaded with the hybrid switched capacitor converter considered as an example. The boost converter is acting as the bus converter, 42 V bus, while the switched capacitor converter is the point of load converter. The two converters are provided with voltage-mode...
We develop and demonstrate an optimal switching- sequence-based control (OSBC) scheme for switching power converters (SPCs) that guarantees global stability and also meets predefined performance criteria. First, using techniques based on composite Lyapunov functions (CLFs) and piecewise-linear (PWL) models of the SPC, we determine the set of switching sequences that guarantee global stability. Next,...
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