A hybrid permanent magnet( PM) variable flux memory motor( VFMM) was designed. The simulation model was established in Ansoft Maxwell 2D software. The flux weakening of the motor was researched by using the finite element analysis method. Recoil line equation under demagnetization and local hysteresis curve equation under remagnetization are given. Different direct axis current is applied to the motor. The motor's flux_lines and the permanent magnets' flux density vector was analysed. The motor's fluxlinkag...