Determination of start commutation in synchronous servo-drives

Details Determination of start commutation in synchronous servo-drives Determination of start commutation in synchronous servo-drives

2006-11-28

2006-11-28

Masih, Karen (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

C318S700000, C318S132000, C318S434000, C318S254100

Reexamination Certificate

active

07141952

ABSTRACT:
Method for the determination of start commutation in synchronous servo-drives by means of two coupled control loops, a current control circuit and an angle control circuit. The angle control circuit contains an incremental position sensor signal. A ramped desired value is predetermined by the current control. A constant angle desired value is predetermined by the angle control. The angle control is embodied in such a manner that is has a faster dynamic than the current control dynamic of the signal which is impinged upon by the current control by rotating the magnetic field. The method can be controlled in all positions by the input of an S-shaped disturbance variable signal in the angle control. The shaft of the electric drive can be mechanically blocked in the position during initialization of the start commutation and is regulated to the same position as in the beginning of the start commutation.

REFERENCES:
patent: 6592412 (2003-07-01), Geil et al.

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