Simple Switching Strategy for High-Torque Control Performance utilizing Neutral Point Clamped Multilevel Inverter
Three-level Neutral Point Clamped (NPC) inverter allows the configuration of switching devices to operate at high voltage and produce lower current/voltage harmonics. It is known that, DTC of induction machine which employs hysteresis controller has major drawbacks namely larger torque ripple and...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
2013
|
| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/11629/1/IJPEDS_Atikah.pdf http://eprints.utem.edu.my/id/eprint/11629/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Three-level Neutral Point Clamped (NPC) inverter allows the
configuration of switching devices to operate at high voltage and produce lower current/voltage harmonics. It is known that, DTC of induction machine which employs hysteresis controller has major drawbacks namely larger torque ripple and variable switching frequency. This paper aims to propose a suitable voltage vector selection to provide better torque regulation and lower switching frequency by employing DTC with 3-level NPC multilevel inverter. A simple switching strategy was formulated using 7-level torque hysteresis and 2-level flux hysteresis controllers to give more options in selecting an appropriate voltagevector, inherently, according the motor operation conditions. The improvements offered were verified through simulations. |
|---|