Investigation of an Intensifying-flux Variable Flux-leakage Interior Permanent Magnet Machine for Wide Speed Range

In this paper, a novel intensifying-flux variable flux-leakage interior permanent magnet (IFVF-IPM) machine is proposed, in which flux barriers were designed deliberately between the adjacent poles to obtain effect and property. The rotor topology design principles of proposed are also introduced. Then, multi-objective optimization method adopted based on sensitivity analysis, some variables IFVF-IPM with strong selected progress by using non-dominated sorting genetic algorithm-II (NSGA-II). Moreover, electromagnetic characteristics conventional IPM machine, (CIFVF-IPM) compared finite element analysis (FEA) includes linkage, inductances characteristic, torque-speed envelops power as well evaluation risk irreversible demagnetization. Finally, experiment results show that IFVF- has better performance weakening capability for wide speed range lower demagnetization, indicates validity feasibility machine.