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Insulated gate bipolar transistors (IGBT) have evolved significantly and become exceedingly fast. Today, their typical switching speeds are of the order of 100ns. The resulting dv/dt is considerably large and when employed in a variable speed motor drive inverter, ringing over-voltages occur at the motor terminals even with cable as short as 1 meter in length. In any such power converter system, protection...
Impact of integration of distributed generation (DG) sources on large power networks cannot be studied accurately using computer simulations since building of accurate models of a variety of DG sources and their controls is challenging. Power hardware in the loop (PHIL) simulations help realistic integration studies as they allow interfacing of physical DG systems with well-established power grid...
For safe operation of voltage source converters, dead-time is provided to the IGBTs that belong to a single leg. While a large value of dead-time prevents dc-bus shoot-through, it also causes error in the output voltage of the power converter, leading to distortion of line currents and increased harmonic content in them. The problem is more severe in case of high switching frequency operation of the...
Renewable sources of energy can be used for water pumping application in rural areas where availability of grid is not there. In this paper, the energy from solar and wind is integrated at a common DC bus which is used to drive the vector controlled induction motor coupled to water pump. A small battery connected through bidirectional dc-dc converter is used to maintain the dc bus at required voltage...
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