High Performance Control of Dual Three-Phase PMSM

In recent years multi-phase permanent magnet synchronous motors especially dual three-phase permanent magnet synchronous motors have the advantages of higher output power stronger fault tolerance and lower torque pulsation than the traditional three-phase permanent magnet synchronous motors and have been used in many demanding applications such as military and new energy vehicles. Dual three-phase permanent magnet synchronous motors have the three main characteristics of large output power under low-voltage operating conditions high reliability and low torque pulsation compared with traditional three-phase motors. Although they provide more power and higher efficiency they are also accompanied by the complexity and difficulty of control. The model predictive control method has become one of the main control strategies. However as the number of phases of dual three-phase permanent magnet synchronous motors increases their models and control strategies become complex. These complexities not only make the control more difficult but also may lead to the increase of harmonic currents which increases the losses of the motor.