Method for determining the rotor position of a synchronous...

Details Method for determining the rotor position of a synchronous... Method for determining the rotor position of a synchronous...

2007-12-18

2007-12-18

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Armature winding circuits

C318S700000, C318S661000

Reexamination Certificate

active

10510925

ABSTRACT:
The rotor position of a synchronous motor is determined, in that for a plurality of current vectors distributed over one electrical rotation of the synchronous motor, the amount of the current vector which is necessary to attain a defined deflection of the rotor is determined. The position of the rotor may be calculated from the position of the minima of the amounts thus determined, taking into account the direction of rotation of the rotor. The engagement of a brake may ensure that grooving forces and machine vibrations play no role for the method to determine the rotor position.

REFERENCES:
patent: 5874821 (1999-02-01), Monleone
patent: 6011368 (2000-01-01), Kalpathi et al.
patent: 6445154 (2002-09-01), Toyozawa et al.
patent: 44 07 390 (1995-09-01), None
patent: 44 37 793 (1998-05-01), None
patent: 199 56 104 (2000-10-01), None
patent: 1 085 650 (2001-03-01), None
“A Procedure to Estimate the Absolute Position of the Rotor Flux of a Permanent Magnet Synchronous Machine” from the European Conference on Power Electronics & Applications, 1991, Backhaus; Reinold; Kalker.

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