Title :
Analysis and experimental investigation of CM voltage mitigation of a high performance Induction Motor drive
Author :
Behera, R.K. ; Das, S.P. ; Ojo, Olorunfemi
Author_Institution :
Dept. of Electr. Eng., Indian Inst. of Technol. Patna, Patna, India
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.
Keywords :
induction motor drives; invertors; machine windings; switching convertors; torque control; voltage control; CM voltage mitigation; NPC invertor; common mode; direct torque control; induction motor drive; inverter switching frequency characterization; lookup table; motor winding; neutral point clamped; voltage vector; Inverters; Stators; Switches; Table lookup; Torque; Vectors; Voltage control; common mode voltage; direct torque control; induction motor drives; switching frequency characterization; three-level NPC converter;
Conference_Titel :
Power Electronics, Drives and Energy Systems (PEDES), 2012 IEEE International Conference on
Conference_Location :
Bengaluru
Print_ISBN :
978-1-4673-4506-4
DOI :
10.1109/PEDES.2012.6484253
