Naslov
A Device and a Method for Estimating the Speed of a Slip Ring Asynchronous Machine

Autori
Hansson Lars, Tuve ; Slutej, Alojz

Broj patenta
PCT WO 01/27637 A1

Godina
2000

Datum patenta
12.10.2000.

Nositelj prava
ABB AB, Vasteras, , S

Sažetak
The invention relates to a device and a method for estimating the speed of a slip ring asynchronous machine (1). The asynchronous machine (1) comprises a stator (2) having a stator winding, arranged to be fed with three-phase voltage and current in order to generate a varying magnetic flux, and a rotor (3) having a rotor winding in which the magnetic flux is arranged to induce a voltage to create an electromagnetic torque. The device comprises a measuring member (12) arranged to measure the value of the voltage in the rotor winding during at least one time period and a calculating unit (17), which is arranged, by means of the above measured voltage, to calculate a value of the rotor speed.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

Napomena
This patent is the result of cooperation between ABB company (Vasteras, Sweden) and Faculty of Electrical Engineering and Computing, Department of Electric Machines, Drives and Automation(FER-ZESA, Croatia)

POVEZANOST RADA