Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1140047 | Mathematics and Computers in Simulation | 2010 | 15 Pages |
Abstract
For electrical machines, accurate position estimations at low speed can be obtained from current responses on high-frequency voltage test pulses. Nevertheless, to apply these voltage test pulses the current controller is often interrupted. In this paper, a modified test pulse sequence is discussed for which the current can be controlled without interruption. To generate the modified test pulse sequence, an asymmetric pulse-width modulator is required. The improvement in the dynamic behaviour of the sensorless drive is discussed by simulations including a salient-pole permanent-magnet synchronous machine, the current control loop, the pulse-width modulator and the position estimator.
Related Topics
Physical Sciences and Engineering
Engineering
Control and Systems Engineering
Authors
Frederik M. De Belie, Peter Sergeant, Jan A. Melkebeek,