Control system and method for electric drives with a.c. motors

Details Control system and method for electric drives with a.c. motors Control system and method for electric drives with a.c. motors

2007-02-20

2007-02-20

Donovan, Lincoln (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Synchronization systems

C318S721000, C318S700000, C318S799000, C318S805000

Reexamination Certificate

active

11154368

ABSTRACT:
A vector-control system and method of a “sensorless” type for electric drives with a.c. motors is based upon generation of an oscillating magnetic field and upon measurement of the deviation, with respect to said oscillating field, of the flux generated thereby on account of anisotropy, whether natural or induced, of the magnetic structure of the machine.

REFERENCES:
patent: 6388420 (2002-05-01), Jansen et al.
patent: 6462492 (2002-10-01), Sakamoto et al.
patent: 6552509 (2003-04-01), Veltman
patent: 6639380 (2003-10-01), Sul et al.
patent: 6825646 (2004-11-01), Colombo
patent: 6984270 (2006-01-01), Sato et al.

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