PROJECT TITLE :

Performance investigation of hybrid excited switched flux permanent magnet machines using frozen permeability method

ABSTRACT:

This study investigates the electromagnetic performance of a hybrid excited switched flux permanent magnet (SFPM) machine using the frozen permeability (FP) technique. The flux components because of PMs, field excitation windings and armature windings are separated using the FP method. It has been used to separate the torque components thanks to the PMs and excitations, providing a robust insight into the torque generation mechanism of hybrid excited SFPM machines. It additionally allows the correct calculation of d- and q-axis inductances, that will then be used to calculate the torque, power and power issue against rotor speed to match the relative deserves of hybrid excited SFPM machines with completely different types of PMs (i.e. NdFeB, SmCo and Ferrite). This offers the possibility of selecting acceptable PMs for different applications (maximum torque or most speed). Although solely one sort of hybrid excited PM machine has been utilized to carry out the investigations, the tactic employed in this study will also be extended to alternative hybrid excited PM machines. The predicted results have been validated by tests.