| Title |
A Performance Improvement Method of PMSM Torque Control Considering DC-link Voltage Variation |
| Authors |
Jung-Hyo Lee ; Chung-Yeun Won |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2014.28.11.112 |
| Keywords |
PMSM Torque Control ; DC-link Voltage Variation ; 2D-LUT ; Friction Torque Compensation |
| Abstract |
This paper proposes a PMSM torque control method considering DC-link voltage variation and friction torque. In general EV/HEV application, two dimensions look-up table(2D-LUT) is used for reference current generation due to its stable and robust torque control performance. Conventionally, this 2D-LUT is established by flux-torque table to overcome the DC-link voltage variation. However, the flux table establishment is more complex than the speed table establishment. Moreover, one flux data reflects several speed conditions in variable DC-link voltage, friction torque cannot be considered by using the flux table. In this paper, speed-torque 2D-LUT is used for current reference generation. With this table, PMSM torque control is well achieved regardless of DC-link voltage variation by the proposed control method. Simulation and experimental results validate improvement of torque control error through friction torque compensation. |