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Improved INFORM-measurement sequence and evaluation for sensorless permanent magnet synchronous motor drives
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| Author(s) |
E. Robeischl; K. Salutt; M. Schroedl |
| Abstract |
For INFORM-based sensorless position estimation with conventional current sensors the current
control is interrupted in certain time intervals. During the so called INFORM-measurement, definite
voltage space phasors are applied to the machine and the resulting current response is measured. A
suitable evaluation of the measured quantities yields the required rotor position. The basic idea of the
presented paper is to minimise the INFORM-measurement with respect to its duration and its
repetition rate. Combining the improved measurement sequence with a corresponding modified
evaluation a high quality position estimation is obtained at significantly reduced current distortion
compared to the previous measurement sequence. |
| Download |
| Filename: | EPE-PEMC2002 - T9-044 - Robeischl.pdf |
| Filesize: | 242.6 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-05-25 by System |
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