| Title |
A Study on Startup-Characteristic of Sensorless Controlled IPMSM Employing Sliding Mode Observer |
| Authors |
Sang-Hun Kim ; Soon-Jae Kwon ; Marn-Go Kim ; Young-Seok Jung |
| DOI |
10.6113/TKPE/2011.16.1.38 |
| Keywords |
IPMSM; SMO; Sensorless control; Start-up characteristic |
| Abstract |
This paper presents the improvement of start-up characteristic of sensorless controlled IPMSM(Interior Permanent Magnet Synchronous Motor) with SMO(Sliding Mode Observer). It is difficult to utilize the rotor position information at starting point for the back EMF estimation based sensorless control. For this reason, open loop control is normally used during start-up period. However, changing from open loop to closed loop control might bring a problem on the transient characteristics for difference load conditions. To solve this problem, we add another rotor angle controller. Simulation results and experimental results are presented to verify proposed method. |