Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2011-04-05
2011-04-05
Masih, Karen (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S623000, C318S611000
Reexamination Certificate
active
07919947
ABSTRACT:
A method and a device with a control apparatus (50) for starting an electric machine (10) with a rotor (20), particularly the spinning cup of an open-end spinning machine, magnetically mounted by a bearing having permanent magnets (31, 32, 33, 34). An actuator system controls the position in the axial direction (35, 36) and two limitation bearings (41, 42), determine the axial end positions of the rotor. The actuator system brings about a lifting from the first axial end position, and a system variable during such lifting is compared with a reference value, and the rotor (20) is moved into the second end position, and the actuator system brings about a lifting from the second axial end position, and a system variable on lifting from the second end position is compared with a reference value.
REFERENCES:
patent: 5969451 (1999-10-01), Lyons et al.
patent: 6516601 (2003-02-01), Coenen
patent: 2002/0002816 (2002-01-01), Coenen
patent: 100 22 736 (2001-11-01), None
patent: 10 2005 032 184 (2007-01-01), None
patent: WO 01/17096 (2001-03-01), None
K&L Gates LLP
Masih Karen
Oerlikon Textile GmbH & Co. KG
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