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|Title:||Analysis and Experimental Investigation of CM Voltage Mitigation of a High Performance Induction Motor Drive|
|Authors:||Behera, R. K.|
Das, S. P.
|Keywords:||Common Mode Voltage|
Direct Torque Control
Induction Motor Drives
Switching Frequency Characterization
Three Level NPC Converter
|Abstract:||In this paper a three-phase three-level Neutral Point Clamped (NPC) inverter is used for driving Induction Motor (IM) operating under Direct Torque Control (DTC) scheme. The three-level NPC inverter has 27 combinations of switching states. However, there are redundancies in these combinations and only 19 voltage vector are considered in the order to minimize the Common Mode (CM) voltage stress on the motor winding. A selective look-up table is derived to reduce CM voltage. And then analytical results are presented. Based on this method inverter switching frequency characterization is addressed. Results are compared with the conventional look-up table method. Typical simulation and experimental results are presented to validate the proposed algorithm.|
|Appears in Collections:||2012|
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