Method and apparatus for determining the rotor resistance of an

Details Method and apparatus for determining the rotor resistance of an Method and apparatus for determining the rotor resistance of an

1981-08-13

1984-04-03

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

324158MG, 318803, H02P 540

Patent

active

044410654

ABSTRACT:
Disclosed is a method to detect the rotor resistance of an asynchronous machine, wherein a first vector attached to the emf of the machine is determined by computing the emf-vector or the flux vector from the stator voltages and the stator currents; wherein a flux attached to an arithmetic model circuit is determined, whereas the arithmetic model circuit uses the stator currents and the rotor position of the machine and an adjustable model parameter for the rotor resistance as basic quantities and imitates the dynamic events leading to the magnetic flux of the machine; wherein a difference of two quantities is determined, wherein the first quantity represents a defining quantity of the first vector attached to the machine and the second quantity represents a respective defining quantity of a second vector derivable from the imitated flux and that the setting of a model parameter is varied until the value of the difference is a minimum, whereas the model parameter corresponding to the minimum of the difference is regarded as the resulting rotor resistance of the machine.

REFERENCES:
patent: 3775649 (1973-11-01), Bayer et al.
patent: 3909688 (1975-09-01), Blaschke et al.
Nabe, A., "An Approach to Flux Control Of Induction Motors Operated With Variable Frequency Power Supply", IAS78: 30C, pp. 890-896.
Blaschke, F. et al., "Verfahren zur Felderfassung Bei der Regelung Stromrichtergespeister Asynchronmaschinen, Messen Steuern Regeln, No. 12, Apr. 19, 1975, pp. 278-280.

Affiliated with

Also associated with

Rating

Method and apparatus for determining the rotor resistance of an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for determining the rotor resistance of an , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for determining the rotor resistance of an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669297