A control strategy of unified field permanent magnet dual mechanical port machine

The output torque of outer motor and inner motor is affected by each other in Unified Field Dual Mechanical Port Electric Machine (UFDMPM), because of its electromagnetic coupling characteristic. A new control strategy is proposed to control the UFDMPM, by which the inner motor and outer motor can be separately controlled, in spite of existing electromagnetic coupling between them. In the end, the control strategy is validated by simulations and experiments.