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1. WO2000017999 - METHOD FOR MEASURING THE SPEED OF AN INDUCTION MACHINE

Publication Number WO/2000/017999
Publication Date 30.03.2000
International Application No. PCT/DE1999/002876
International Filing Date 10.09.1999
Chapter 2 Demand Filed 14.03.2000
IPC
G01P 3/48 2006.01
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATING PRESENCE OR ABSENCE OF MOVEMENT;  INDICATING DIRECTION OF MOVEMENT 
3Measuring linear or angular speed; Measuring differences of linear or angular speeds
42Devices characterised by the use of electric or magnetic means
44for measuring angular speed
48by measuring frequency of generated current or voltage
H02P 27/02 2016.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
27Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
02using supply voltage with constant frequency and variable amplitude
CPC
G01P 3/48
GPHYSICS
01MEASURING; TESTING
PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
3Measuring linear or angular speed; Measuring differences of linear or angular speeds
42Devices characterised by the use of electric or magnetic means
44for measuring angular speed
48by measuring frequency of generated current or voltage
H02P 27/02
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
27Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
02using supply voltage with constant frequency and variable amplitude
H02P 27/026
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
27Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
02using supply voltage with constant frequency and variable amplitude
026whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
Applicants
  • SIEMENS AKTIENGESELLSCHAFT [DE]/[DE] (AllExceptUS)
  • GRIEPENTROG, Gerd [DE]/[DE] (UsOnly)
  • RUNGGALDIER, Diethard [IT]/[DE] (UsOnly)
Inventors
  • GRIEPENTROG, Gerd
  • RUNGGALDIER, Diethard
Common Representative
  • SIEMENS AKTIENGESELLSCHAFT
Priority Data
198 43 133.321.09.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM MESSEN DER DREHZAHL EINER INDUKTIONSMASCHINE
(EN) METHOD FOR MEASURING THE SPEED OF AN INDUCTION MACHINE
(FR) PROCEDE ET DISPOSITIF POUR MESURER LA VITESSE D'UNE MACHINE INDUCTIVE
Abstract
(DE)
Zum Messen der Drehzahl (n) einer Induktionsmaschine (2), deren Stator über einen steuerbaren Wechselstromsteller (4) an ein ein- oder mehrphasiges Wechselspannungsnetz (L1, L2, L3) angeschlossen ist, wird erfindungsgemäß der Stator für zumindest einen vorgegebenen Zeitabschnitt ($g(D)t) durch Öffnen der Ventile (6) des Wechselstromstellers (4) vom Wechselspannungsnetz (L1, L2, L3) getrennt, wobei in diesem Zeitabschnitt ($g(D)t) zumindest eine im Stator durch die Drehbewegung des Läufers induzierte Statorspannung (uSX, uSY) gemessen wird. Aus den so gewonnenen Meßwerten wird die Frequenz dieser Statorspannung (uSX, uSY) ermittelt und daraus die Drehzahl (n) der Induktionsmaschine (2) abgeleitet.
(EN)
The invention relates to a method for measuring the speed (n) of an induction machine (2) whose stator is connected to a single- or multiple-phase AC voltage network (L1, L2, L3) by a controllable AC power controller (4). According to this method, the stator is disconnected from the AC voltage network (L1, L2, L3) for at least a predetermined time period ($g(D)t) by opening the valves (6) of the AC power controller (4). During this time period ($g(D)t), at least one stator voltage (uSX, uSY) induced in the stator by the rotary motion of the rotor is measured. The measured values are used to determine the frequency of said stator voltage (uSX, uSY) and the speed (n) of the induction machine (2) is then derived from the frequency.
(FR)
L'invention concerne un procédé permettant de mesurer la vitesse (n) d'une machine inductive (2) dont le stator est relié à un réseau de tension alternative (L1, L2, L3) mono- ou multiphase, par l'intermédiaire d'un gradateur de courant alternatif (4). Il est prévu selon l'invention de couper le stator du réseau de tension alternative (L1, L2, L3), au moins pendant une période prédéterminée ($g(D)t), par ouverture des clapets (6) du gradateur de courant alternatif (4). Au cours de cette période ($g(D)t), au moins une tension statorique (uSX, uSY) induite dans le stator par le mouvement de rotation du rotor est mesurée. La fréquence de cette tension statorique (uSX, uSY) est déterminée à partir des valeurs mesurées ainsi obtenues et la vitesse (n) de la machine inductive (2) est ensuite dérivée de la fréquence obtenue.
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