High speed vector control without encoder for a high speed spindle motor
- 4 December 2002
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- p. 390-394 vol.1
- https://doi.org/10.1109/ias.1990.152214
Abstract
A 40000 RPM vector-controlled induction motor drive is introduced. In a previous paper by T. Kume et al. (see Proc. IPEC 1990 conf., Tokyo, p.1132-1136, 1990), conventional vector control with a shaft encoder was employed in a low-speed range, while constant V/f (volt-per-hertz) PWM control was employed in a high-speed range. The two control modes were switched at approximately 20000 RPM. By employing phase compensation and instantaneous current limit, the dead-time between two modes was minimized. This technique is further improved by the authors. The constant V/f PWM control in the high-speed range is replaced by vector control without an encoder. The current control loop is not interrupted for mode changing, and thus continuous operation over the entire range is established.Keywords
This publication has 3 references indexed in Scilit:
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