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This paper addresses the steady-state and dynamic modeling of a three-level, neutral-point-clamped (NPC) voltage source converter (VSC) with active front-end (AFE) in a commercial 2.5 MW variable speed motor drive (VSD). The AFE of the modeled VSD adopts the selective harmonic elimination SHE-PWM technique with the optimization of inverter power capacity and power source quality for a wide-range VSD...
At SEPIC converter there are no equations which summarize the overall behaviour of this circuit converter. Determining factors like the throughput power of the circuit and peak voltages and currents, means developing a computer model. In this model the operation of the circuit is broken down into its separated modes and the appropriate equations derived for each of theme. For all modes the time function...
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