Design study and analysis of hybrid excitation flux switching motor with DC excitation in radial direction

Research and development of hybrid excitation flux switching motors (HEFSMs) that combined both permanent magnet (PM) and DC field excitation coil (FEC) as their main flux sources have been an attractive investigation recently due to their overwhelming performances as well as flux control capabilities. Among different types of HEFSMs, the motor with both PM and FEC located on the stator has the advantage of robust rotor structure due to their high mechanical stress suitable for high-speed applications. In this research, design and performance of a three-phase 12-slot 10-pole HEFSM in which the DC FEC in radial direction on the stator are investigated. Initially, coil arrangement test is analyzed to all armature coil slots to confirm the polarity of the phase. Then, flux interaction analysis is performed to investigate the flux capabilities at various current densities. Finally, torque and power performances are investigated at various armature and FEC current densities. The results show that the proposed motor has proportional increment of torque and power with respect with the current density suitable for various applications.