Sökning: "torque ripple"

Visar resultat 6 - 10 av 23 uppsatser innehållade orden torque ripple.

  1. 6. Comparison of FOC and DTC in an application of a screw joint emulator

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Axel Fyreskär; Joel Greberg; [2020]
    Nyckelord :;

    Sammanfattning : Atlas Copco produces, among other things, tightening tools for screw joints. The purpose of these fastening elements is to produce a clamping force between two parts, holding them together. LÄS MER

  3. 7. Vibration Attenuation for Satellite Reaction Wheels through the use of Field-Oriented Control

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Institutionen för reglerteknik

    Författare :Linnéa Rosenbecker; [2020]
    Nyckelord :Technology and Engineering;

    Sammanfattning : Complex space components are getting more important as the request for high precision space missions is increasing. The main contribution to vibrations on a satellite is the reaction wheels, the primary actuator in the attitude control of the satellite. LÄS MER

  4. 8. CURRENT OVERSAMPLING ANALYSIS FOR ADVANCED CONTROL OF ELECTRIC AC DRIVES

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Marco Giuliato; [2019]
    Nyckelord :;

    Sammanfattning : The main purpose of this thesis is to develop a sensorless control for a synchronous reluctance motor by using the slope measurement of the current ripple introduced by the Space Vector Modulation.The position estimation is performed at each Space Vector Pulse Width Modulation period and it relies on the estimation of current derivatives. LÄS MER

  5. 9. Sensorless algorithm for synchronous machines using current oversampling and PWM harmonics

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Giorgio Gullone; [2018]
    Nyckelord :;

    Sammanfattning : Sensorless-controlled drives represent a solution drawing an increasinglyimportant attention for the benefits they entail. At the cost ofa slightly lower dynamics compared with the traditional drives, theyinvolve a reduction of the system costs and complexity and improvednoise immunity and reliability. LÄS MER

  7. 10. Design and comparison of PMaSynRM versus PMSM for pumping applications

    Master-uppsats, KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Författare :Viktor Briggner; [2018]
    Nyckelord :Demagnetization; economic evaluation; permanent magnet assistance; synchronous reluctance machine; Avmagnetisering; ekonomisk utv¨ardering; permanentmagnetassistans; synkron reuktansmaskin;

    Sammanfattning : This master thesis aimed to design a permanent magnet assisted synchronous reluctancemachine (PMaSynRM) rotor for pump applications which were to be implemented inan existing Induction Machine stator. The machine were to be compared with a similarpermanent magnet synchronous machine (PMSM) with similar torque production in termsof cost and performance. LÄS MER