Sökning: "Induction motor"
Visar resultat 1 - 5 av 73 avhandlingar innehållade orden Induction motor.
1. Design and Evaluation of a Compact 15 kW PM Integral Motor
Sammanfattning : This thesis deals with the integral motor of tomorrow, and particularly with a variable speed, sensorless permanent magnet synchronous motor with an integrated converter. The rated power is 15 kW at 1500 r/min. The outer dimensions are approximately the same as for the equivalent standard induction motor.Control strategies for pumps and fans, i. LÄS MER
2. Thermal Modelling of Small Cage Induction Motors
Sammanfattning : The loadability of electric machines is above all determined by temperature limits. In this work, thermal network models, suitable for totally enclosed fan cooled (TEFC) induction motors, are used to predict the machine temperatures. LÄS MER
3. Robust Control of an Induction Motor Drive
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. Analysis of high-speed induction motor prototypes
Sammanfattning : .... LÄS MER
5. On Control of Back-to-Back Converters and Sensorless Induction Machine Drives
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