Title :
Line-Start Permanent-Magnet Motors: Significant Improvements in Starting Torque, Synchronization, and Steady-State Performance
Author :
Aliabad, Aliakbar Damaki ; Mirsalim, Mojtaba ; Ershad, Nima Farrokhzad
Author_Institution :
Electr. Eng. Dept., Amirkabir Univ. of Technol., Tehran, Iran
Abstract :
We present a new scheme to improve the starting torque and synchronization capability of line-start permanent-magnet motors based on pole changing winding. Pole changing at start-up neutralizes the magnetic influence of permanent magnets and, therefore, leads to the elimination of braking and pulsating torques, and enhances the starting torque. Our scheme also solves the synchronization problem. We used finite-element analysis to validate the scheme. The simulation results show that the method leads to a high starting torque, good synchronization, and excellent steady-state performance.
Keywords :
finite element analysis; permanent magnet motors; FEM; finite-element analysis; line-start permanent magnet motors; pole changing winding; starting torque; steady-state performance; synchronization capability; Induction motors; Permanent magnet motors; Rotors; Steady-state; Synchronous motors; Torque; Windings; LSPM motor; pole changing winding; starting torque; steady-state performance; synchronization capability;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2070876