| Abstract |
In synchronous motor variable speed drives, the classical controls are constituted of an inner current loop and an external speed loop. These models use a linear model near the operatinq point. Consequently for another operating point the system performance fails. In order to overcome this disadvantage, different adaptive methods can be used for speed control. In the proposed communication, two adaptive methods, for a permanent magnet synchronous motor drive, are compared with a classical control. The first method is based on a preprogrammed gain regulator, the second is a model reference adaptive control (MRAC). |
