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This paper presents a method to model three-phase saturable transformers for real-time simulation, using the example of a wye-delta configuration. The magnetizing path of the transformer is modelled with parallel connected linear inductors to simulate a piecewise linear saturation characteristic. Depending on the saturation state, the inductors are switched on and off via ideal switches, which are...
A new method for modeling switched-linear systems is presented: switching devices are modeled ideally using parametrized curves, and an efficient implementation for real-time simulation is proposed. Experiments on a rectifier topology for traction converters demonstrate the methods performance in terms of accuracy, stability and execution time, with a 50us step-size.
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