This study mainly focuses on the special capability and the control strategy of five-phase induction machine.
On the basics of three-phase induction machine, five-phaseinduction machine may be gotten by expending the phases. Furtherly multi-phase induction machine can be gotten, and they have many superior capabilities than three-phase induction machine. It is expecially fit for the large power frequency control system or the high reliability system, with a development foreground.
While one phase of five-phase induction machine is quit or disconnected in failure, the five-phase induction machine can maintain the round rotation magnetic field by means of adjusting the rest current vectors without changing the hardware structure. So it can be operating in a little droping load, or operating in full load by inceasing the phase currents. This is superior to the three-phase induction machine.
And compared to three-phase induction motor, the multi-phase induction motors are the main advantages: ① increased frequency of torque ripple (ie, the increasing frequency of the pulse), amplitude decreased; ② smaller rotor harmonic current; ③ winding smaller current amplitude; ④ inverter current harmonic smaller end; ⑤ higher system reliability; ⑥ For the same size motor, the improvement of a few, or even to increase the output torque and the ratio of input current. Multi-phase induction motor ⑦ faster dynamic response, stability, less torque ripple, thereby reducing the system the possibility of mechanical resonance and reduce motor noise and rotor wear and tear. ⑧ In addition, the multi-phase induction motor with the manufacturing process, compared to three-phase induction motor, there is no special place, a considerable manufacturing costs. Five-phase induction motor circuit in one phase of the situation, by changing the other four-phase current, but continues to allow the normal operation of motor. The discussion paper is based on Maxwell on how to control the five-phase motor circuit in one phase of the control methods under the simulation.