| Abstract |
In order to control PWM-fed synchronous motor drives with high dynamics, an accurate knowledge of the machine state variables in the whole range of operation is necessary. A method is presented to estimate these quantities by using electrical signals only (stator currents, stator voltages and excitation current), which can be measured easily. The mathematical modeling is discussed. A recursive filter algorithm based on the so-called extended Kalman filter technique is given. The good performance of the presented estimation method is demonstrated by computer simulation results. The proposed algorithm is suitable to be implemented with a fast microprocessor system for on-line operation. |
