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Design Studies on Hybrid Excitation Motor for Main Spindle Drive in Machine Tools

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4 Author(s)
Kosaka, T. ; Dept. of Electr. & Comput. Eng., Nagoya Inst. of Technol., Nagoya, Japan ; Sridharbabu, M. ; Yamamoto, M. ; Matsui, N.

This paper presents a hybrid excitation motor for a main spindle drive in end- and face-milling tools, which is operated with a high speed of 50 000 r/min. The proposed motor has not only a permanent magnet but also the field coil which makes field-weakening and field-strengthening controls possible with taking no notice of the permanent magnet demagnetization. In addition, the sum of iron and copper losses of the motor at the end-milling operation is significantly reduced by the field-weakening control. The 3-D finite-element-method-based design studies on the proposed motor for the target application are demonstrated.

Published in:

Industrial Electronics, IEEE Transactions on  (Volume:57 ,  Issue: 11 )

Date of Publication:

Nov. 2010

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