Investigation of Various Design Slot Pole of Field Excitation Flux Switching Machines with Segmental Rotor

Abstract

Single phase Field Excitation Flux Switching Machines (FEFSMs) have been the main attention of electric machine and as alternative for it is suitable for high speed application but low torque performance and because it has a robust rotor structure. Currently, the winding of field excitation (FE) and armature are wound in distributed configuration and caused the motor size and material cost to increase which eventually leads to high copper loss. Therefore, this paper investigates the no-load and load finite-element analysis (FEA) and comparison between 8 slots and 16 slots with four different rotor number for each slot design. The rotor pole in segmental structure, concentric armature and FEC windings. The performances in No-load analysis is the coil arrangement, back-EMF, flux linkage, cogging torque, flux line and flux distribution of the propose machines. The study is performed by applying a 2-D FEA and compare the load analysis such as torque and power to determine the best performance. The 2-D FEA results shows that the best combination of slot-pole configurations is the 16 Slots 8Pole because of its highest torque and power output, 3.49Nm and 0.31kW respectively.