Sökning: "dc motor"

Visar resultat 1 - 5 av 32 avhandlingar innehållade orden dc motor.

  1. 1. The control of VSC-HVDC and its use for large industrial power systems

    Författare :Cuiqing Du; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; VSC-HVDC; inner current controller; outer controller; PWM; dc dc converter; voltage dips; dc networks;

    Sammanfattning : With the recent developments in semiconductors and control equipment, Voltage Source Converter based High Voltage direct Current (VSC-HVDC) has become feasible. Due to the use of VSC technology and Pulse Width Modulation (PWM), it has a number of potential advantages: short circuit current reduction; rapid, independent control of the active and reactive power, etc. LÄS MER

  3. 2. Robust Control of an Induction Motor Drive

    Författare :Henrik Mosskull; Bo Wahlberg; Marian Kazmiekowski; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Automatic control; Reglerteknik;

    Sammanfattning : This thesis considers robust control of an induction motor drive, consisting of an input filter, a voltage source inverter and one or several induction motors in parallel. The motor torque is here controlled by using the method Indirect Self Control (ISC), and power oscillations between the inverter and the input filter are damped by means of a stabilization controller in an outer feedback loop. LÄS MER

  4. 3. Distributed control of electric drives via Ehernet

    Författare :Lilantha Samaranayake; KTH; []
    Nyckelord :Brushless DC Motor; Control Delay; Distributed Motion Control Systems; Proportional Integral Controller;

    Sammanfattning : This report presents the work carried out aiming towardsdistributed control of electric drives through a networkcommunication medium with temporal constraints, i.e, Ethernet.A general analysis on time delayed systems is carried out,using state space representation of systems in the discretetime domain. LÄS MER

  5. 4. AFPM Motor/Generator Flywheel for Electric Power Stabilization

    Författare :Juan de Santiago Ochoa; Uppsala universitet; []
    Nyckelord :TECHNOLOGY; TEKNIKVETENSKAP;

    Sammanfattning : The study of a motor/generator for flywheel energy storage, meant to smooth the power transients in a vehicular power train, is expounded in this licentiate thesis. The proposed motor/generator has two sets of windings in the stator, rated at different power and voltage levels, and a significant moment of inertia to store energy in the form of rotational kinetic energy. LÄS MER

  7. 5. Main-circuit considerations of power coverters for integral motors

    Författare :Karsten Kretschmar; Hans-Peter Nee; Johan Walter; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electronics; Permanent magnet integral motor; Small DC link; Elektronik; Electronics; Elektronik;

    Sammanfattning : This thesis deals with different converter topologies for a 15kW permanent magnet (PM) integral motor. An integral motor combines the motor and the power electronics in one unit. The main objective is to find suitable converter alternatives for an integral motor. LÄS MER