In comparison to well-known sensorless control schemes, the INFORM® method allows closed loop torque-, speed- and position-control of permanent magnet synchronous motors in the whole speed range downto standstill. This paper will look at some control schemes that have been in use for years. It will then explain the technology used for INFORM, making use of a varying reluctance around the perimeter of the machine to evaluate the rotor position. The advantages and limitations of that innovative control scheme will be pointed out and some experiences of industrial applications will be presented. The paper concludes with a lookout on further developments.
| Filename: | EPE Journal 13-3 - 4 - Paper Preusser |
| Filesize: | 92.55 KB |
