DESIGN OF OBSERVER OF FLUX LINKAGE OF SYNCHRONOUS DRIVE OF ROLLING MILL
DOI:
https://doi.org/10.14529/power160310Keywords:
Common Luenberger state observer, stator flux linkage, synchronous motor with damper windings, electric drive of rolling millsAbstract
The paper considers the design of control system for variable-frequency synchronous drive with vector
torque control. Such drives are used in units with enough wide speed range and shock loading, for example,
hot and cold rolling mills. Two coordinates generate the torque of the systems under consideration: current
and flux linkage of the stator. This paper provides parameter calculation for the observer of flux linkage state
of the stator of synchronous motor with damper windings. The system is implemented based on the Luenber-
ger observer with error-feedback. Flux linkage is determined within the orthogonal coordinate system d, q
rotating synchronously with the rotor. The complex of a synchronous exited motor and state observer has
been modeled. Modeling results demonstrate that a fractional error of flux linkage generation does not ex-
ceed 0.15 %.
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