Sökning: "sensorless drives"

Visar resultat 1 - 5 av 7 avhandlingar innehållade orden sensorless drives.

  1. 1. Slotless High-Performance Electric Drives : Harmonic Loss Analysis, Sensorless Control, and Inverter Design

    Författare :Jonas Millinger; Oskar Wallmark; Juliette Soulard; Zi-Qiang Zhu; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Finite-element analysis; harmonic losses; sensorless control; slotless motor drives; thermal modeling; wide-bandgap inverter; Electrical Engineering; Elektro- och systemteknik;

    Sammanfattning : Electric motor drives are a cornerstone for many fundamental functions in today’s society, and their expected dominance within the transport sector is considered one of the main keys to abate global warming. Subsequently, the incentives for improved performance of electric motor drives cannot be sufficiently emphasized. LÄS MER

  3. 2. On Control of Back-to-Back Converters and Sensorless Induction Machine Drives

    Författare :Rolf Ottersten; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; active filtering; flux estimation; sensorless control; induction motor; back-to-back converter; pulsewidth-modulated rectifier; virtual flux; vector current control;

    Sammanfattning : This thesis focuses on design and analysis of the control system structure for back-to-back converter squirrel-cage induction machine drives. Particularly, sensorless control of induction machines, meaning vector control without a mechanical shaft sensor, and vector control of pulsewidth-modulated (PWM) rectifiers are considered. LÄS MER

  4. 3. On Stabilization of Sensorless Synchronous Motor Drives and Traction Converters

    Författare :Magnus Jansson; Lennart Harnefors; Mats Alakula; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Elektronik; elektronik; Electronics;

    Sammanfattning : Avhandlingen behandlar först och främst styrning av elmotordrifter, men vi tittar även på styrning av nätomriktare för stabil framdrivning av tåg.Två industriprojekt är rapporterade i avhandlingen, i form av delrapporterna ”Sensorless Control of Electrically Excited Synchronous Machines”, ABB Corporate Research och ”Stable and Passive Traction”, Bombardier Transportation. LÄS MER

  5. 4. On sensorless control of induction motor drives at low stator frequencies

    Författare :Ove Glenberg; Mälardalens högskola; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Digital motion control techniques for electrical drives

    Författare :Sanath Alahakoon; KTH; []
    Nyckelord :;

    Sammanfattning : Digital motion control area toady is a well-established one,which is believed to be first initiated by power electronicengineers in the early seventies. Modern digital controltheory, advances in digital signal processor andmicrocontroller technology and recent developments in powerelectronic devices have made this field a very competitive one. LÄS MER