Damping of oscillations in induction machines

Author

Alakula, Mats ; Peterson, Bo ; Valis, Jaroslav

Author_Institution

Dept. of Ind. Electr. Eng. & Autom., Lund Inst. of Technol., Sweden

fYear

1992

fDate

29 Jun-3 Jul 1992

Firstpage

133

Abstract

A method for damping the oscillations in induction machines, independent of what is exciting them, is proposed and verified. It is shown that, if the stator flux is controlled, the machine appears as if the stator resistance is zero, whereby the damping of the parallel resonance is increased to infinity. It is also shown that, if the torque-producing stator current component is negatively fed back to the stator frequency reference, the stator resistance from the series resonant point of view can be given any value, whereby the damping of the series resonance is variable. To verify the function of the control system described, a series of measurements has been made on a 1.5 kW, four-pole induction motor

Keywords

circuit oscillations; damping; feedback; induction motors; machine control; machine testing; poles and zeros; stators; 1.5 kW; damping; feedback; induction motor; machine control; machine testing; oscillations; parallel resonance; series resonance; stator flux; stator resistance; Damping; Fluctuations; Induction machines; Induction motors; Open loop systems; Pulse width modulation inverters; Resonance; Stators; Switches; Torque;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 1992. PESC '92 Record., 23rd Annual IEEE

Conference_Location

Toledo

Print_ISBN

0-7803-0695-3

Type

conf

DOI

10.1109/PESC.1992.254702

Filename

254702