We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Study on the losing control problem of direct torque control in permanent magnet synchronous motor drive.
- Authors
Feng, Chen; Chaoying, Xia; Xiaoxin, Hou
- Abstract
In direct torque controlled permanent magnet synchronous motor drives, when the rotor speed or the load torque changes, the effect of a certain voltage vector on the torque also changes. In heavy-load or high-speed operating conditions, the torque may lose control. This paper presents an intensive investigation into this issue. With the help of relevant derivative curves, the primary cause for the losing control problem is analysed. Further study reveals that the effect of a certain voltage vector on the load angle is no relevant for the load conditions. Based on this property, by replacing the torque hysteresis comparator with a load angle hysteresis comparator, a modified direct torque control called the load-angle-feedback direct torque control is proposed and the original superiorities of the direct torque control are well preserved. Comparison between the direct torque control and the proposed method shows that the load capacity and speed operation range may be obviously extended by utilizing the proposed method.
- Subjects
TORQUE control; PERMANENT magnet motors; ELECTRIC potential measurement; HYSTERESIS motors; COMPARATIVE studies
- Publication
Transactions of the Institute of Measurement & Control, 2019, Vol 41, Issue 2, p504
- ISSN
0142-3312
- Publication type
Article
- DOI
10.1177/0142331218765298