Sökning: "synchronous torques."

Hittade 2 uppsatser innehållade orden synchronous torques..

1. 1. Performance Analysis of Unskewed Asymmetrical Rotor for LV Induction Motors

   Master-uppsats, KTH/Elektrisk energiomvandling

   Författare :Usman Shaukat; [2012]
   Nyckelord :Induction motor; skewed rotor; inter-bar currents; starting performance; asymmetrical rotor slots; 2D FEM; synchronous torques.;

   Sammanfattning : This master thesis presents a comparative analysis of the starting performance and losses at rated operation for a 15 kW, 4-pole industrial induction motor, mounted with standard skewed, unskewed and unskewed asymmetrical die-cast aluminium rotors through measurements and simulations. It is a well-known fact that rotor skewing suppresses the synchronous torques at low speeds and also reduces the audible noise of the machine. LÄS MER

3. 2. Parameter Estimation in a Permanent Magnet Synchronous Motor

   Master-uppsats, Reglerteknik

   Författare :Mikael Tenerz; [2011]
   Nyckelord :Permanet magnet synchronous motor parameter estimation;

   Sammanfattning : This thesis adresses the problem of estimating the parameters in a permanent magnet synchronous motor (PMSM). There is an uncertainty about the parameters, due to age and tolerances in the manufacturing process. Parameters such as the resistance and the current to torque factor Kt, changes with respect to temperature as well. LÄS MER