Experimental study of torque and flux weakening performance of alternative switched-flux PM machines

In this presentation, the torque and flux weakening performances of alternative switched flux permanent magnet (SFPM) machines are experimentally investigated and compared. Firstly, the torque and flux weakening control performances of C-core SFPM machine with/without voltage error regulation are compared. It is shown that the flux weakening performance can be improved when the voltage error regulation method is utilised. Moreover, the performances of four different SFPM machine topologies, i.e. conventional, multi-tooth, C-core and E-core SFPM machines are measured and compared using the voltage error regulation method. Overall, it has been concluded that the performances of C-core and E-core machines have better performance in terms of torque and power than that for the multi-tooth and conventional SFPM machines.