Abstract
A direct torque control algorithm for three-level inverter-fed induction motors is presented. Basic voltage selection methods similar to two-level inverter provoke some problems such as stator-flux drooping phenomenon and undesirable torque control deterioration appeared, especially at low-speed operation. To overcome these problems, an algorithm with the basic switching sectors subdivided and intermediate voltage vectors applied is proposed in this paper. This algorithm basically considers applications in which direct torque-controlled induction motors are fed by three-level inverters with maximum switching frequency lowered around 1 kHz. An adaptive observer is also employed to bring better responses at the low-speed operation, by estimating some state variables and motor parameters which take a deep effect on the performance of the low-speed operation. Simulation and experiment results verify effectiveness of the proposed algorithm.
| Original language | English |
|---|---|
| Pages (from-to) | 1006-1014 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 48 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2001 Oct 1 |
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Keywords
- Direct torque control
- Induction motor
- Low-speed operation
- Three-level inverters
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Instrumentation
Cite this
Improvement of low-speed operation performance of DTC for three-level inverter-fed induction motors. / Lee, Kyo Beum; Song, Joong Ho; Choy, Ick; Yoo, Ji Yoon.
In: IEEE Transactions on Industrial Electronics, Vol. 48, No. 5, 01.10.2001, p. 1006-1014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Improvement of low-speed operation performance of DTC for three-level inverter-fed induction motors
AU - Lee, Kyo Beum
AU - Song, Joong Ho
AU - Choy, Ick
AU - Yoo, Ji Yoon
PY - 2001/10/1
Y1 - 2001/10/1
N2 - A direct torque control algorithm for three-level inverter-fed induction motors is presented. Basic voltage selection methods similar to two-level inverter provoke some problems such as stator-flux drooping phenomenon and undesirable torque control deterioration appeared, especially at low-speed operation. To overcome these problems, an algorithm with the basic switching sectors subdivided and intermediate voltage vectors applied is proposed in this paper. This algorithm basically considers applications in which direct torque-controlled induction motors are fed by three-level inverters with maximum switching frequency lowered around 1 kHz. An adaptive observer is also employed to bring better responses at the low-speed operation, by estimating some state variables and motor parameters which take a deep effect on the performance of the low-speed operation. Simulation and experiment results verify effectiveness of the proposed algorithm.
AB - A direct torque control algorithm for three-level inverter-fed induction motors is presented. Basic voltage selection methods similar to two-level inverter provoke some problems such as stator-flux drooping phenomenon and undesirable torque control deterioration appeared, especially at low-speed operation. To overcome these problems, an algorithm with the basic switching sectors subdivided and intermediate voltage vectors applied is proposed in this paper. This algorithm basically considers applications in which direct torque-controlled induction motors are fed by three-level inverters with maximum switching frequency lowered around 1 kHz. An adaptive observer is also employed to bring better responses at the low-speed operation, by estimating some state variables and motor parameters which take a deep effect on the performance of the low-speed operation. Simulation and experiment results verify effectiveness of the proposed algorithm.
KW - Direct torque control
KW - Induction motor
KW - Low-speed operation
KW - Three-level inverters
UR - http://www.scopus.com/inward/record.url?scp=0035471272&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0035471272&partnerID=8YFLogxK
U2 - 10.1109/41.954565
DO - 10.1109/41.954565
M3 - Article
AN - SCOPUS:0035471272
VL - 48
SP - 1006
EP - 1014
JO - IEEE Transactions on Industrial Electronics
JF - IEEE Transactions on Industrial Electronics
SN - 0278-0046
IS - 5
ER -