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Description
  • Význam asynchronních motorů v řídicích aplikacích stále roste vzhledem k jejich jednoduché a spolehlivé konstrukci. Řízení pohonů založených na asynchronních motorech však představuje poměrně složitou úlohu. Pokud je použit algoritmus vektorového řízení,musí být známa nejen okamžitá rychlost rotoru ale i poloha magnetického toku. Ve většině aplikací není použit snímač magnetického pole a poloha fázoru magnetického toku je odhadována. Existují však i aplikace, ve kterých nechceme použít ani snímač otáče ek. V takovém případě je třeba řešit úlohu rekonstrukce neměřených veličin ze znalosti statorového napětí a proudu. V tomto článku je objasněna metoda deterministického vyhodnocení měřených veličin s použitím stavového rekonstruktoru, jehož odvození je založeno na Ljapunovově funkci. V článku jsou rovněž diskutovány možnosti odhadu rotorového odporu motoru. (cs)
  • Control of drives based on AC induction motors is a quite complex task. Provided the vector control algorithm is used we need to know not only the rotor speed but also the position of the magnetic flux inside the motor during the control process. In most applications the flux sensors are omitted and the magnetic flux phasor position has to be calculated. But there are also applications in which even speed sensors should be omitted. In such a situation, we have to solve the task of state reconstructionn only from voltage and currents measurements. In the current paper, we present a method based on deterministic evaluation of measurement using the state observer based on Lyapunov function. It is also shown, that the main problem of speed estimation accuracy is closely tied to the knowledge of actual rotor resistance value. A simple method of rotor resistance estimation based on rotor slot harmonics analysis is proposed. Algorithm has been proved in testing on a small 250W AC induction machine.
  • Control of drives based on AC induction motors is a quite complex task. Provided the vector control algorithm is used we need to know not only the rotor speed but also the position of the magnetic flux inside the motor during the control process. In most applications the flux sensors are omitted and the magnetic flux phasor position has to be calculated. But there are also applications in which even speed sensors should be omitted. In such a situation, we have to solve the task of state reconstructionn only from voltage and currents measurements. In the current paper, we present a method based on deterministic evaluation of measurement using the state observer based on Lyapunov function. It is also shown, that the main problem of speed estimation accuracy is closely tied to the knowledge of actual rotor resistance value. A simple method of rotor resistance estimation based on rotor slot harmonics analysis is proposed. Algorithm has been proved in testing on a small 250W AC induction machine. (en)
Title
  • Hybrid Speed Estimation Scheme for AC Induction Machine Sensorless Control
  • Hybridní algoritmus odhadu rychlosti asynchronního motoru pro bezsnímačové řízení (cs)
  • Hybrid Speed Estimation Scheme for AC Induction Machine Sensorless Control (en)
skos:prefLabel
  • Hybrid Speed Estimation Scheme for AC Induction Machine Sensorless Control
  • Hybridní algoritmus odhadu rychlosti asynchronního motoru pro bezsnímačové řízení (cs)
  • Hybrid Speed Estimation Scheme for AC Induction Machine Sensorless Control (en)
skos:notation
  • RIV/00216305:26220/05:PU50900!RIV06-MSM-26220___
http://linked.open.../vavai/riv/strany
  • 1455-1460
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1M0567)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 523919
http://linked.open...ai/riv/idVysledku
  • RIV/00216305:26220/05:PU50900
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • induction machine, speed estimation, rotor resistance (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [55C7C591B400]
http://linked.open...v/mistoKonaniAkce
  • Toronto
http://linked.open...i/riv/mistoVydani
  • Toronto
http://linked.open...i/riv/nazevZdroje
  • Proceedings of the 2005 IEEE Conference on Control Applications
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Blaha, Petr
  • Václavek, Pavel
http://linked.open...vavai/riv/typAkce
http://linked.open.../riv/zahajeniAkce
number of pages
http://purl.org/ne...btex#hasPublisher
  • IEEE
https://schema.org/isbn
  • 0-7803-9354-6
http://localhost/t...ganizacniJednotka
  • 26220
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