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Modeling of power converters is usually done using cycle-average or piecewise-linear methods. Piecewise-linear methods operate by selecting the model corresponding to the current switching state. When the amount of possible states increase, the number of models increases as well. For model-predictive control (MPC), this results in an increasing computational effort, which limits the applicability...
Finding and comparing power losses in power electronics topologies is most commonly done by using IGBT switching losses from datasheets. The method in this paper, however, is an approach using a measurement setup, of which the data are used in MATLAB Simulink in combination with Plexim PLECS. Using this method, losses are analyzed in T-type, flying-capacitor and diode-clamped multi-level PFC topologies,...
The design of electron lenses for high-precision applications is complicated by ferromagnetic properties such as limited transition time and hysteresis. To be able to achieve high focusing precision and fast transition times, these properties should be taken into account when designing suitable controllers. In this project, feedback control, feed-forward control and feedback/feed-forward control topologies...
While an increasing number of photovoltaic (PV) systems is installed, those systems typically use central inverters. In practical cases, output-power differences between PV modules will cause these central-inverter-based systems not to achieve Maximum Power Point (MPP) for each PV module. Furthermore, central-inverter-based systems feature limited modularity and single point-of-failure properties...
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