DDK NFT-801RM3-S Dc moto

Dc motor NFT-801RM3-S has fast response, large starting torque, and the performance of providing rated torque from zero speed to rated speed. However, the advantages of DC motor are its disadvantages, because in order to produce the performance of constant torque under rated load, the armature magnetic field and rotor magnetic field must be maintained at a constant 90°. This is done with carbon brushes and commutators. The carbon brush and commutator will produce sparks and toner when the motor rotates, so in addition to causing damage to the components, the use of the situation is also limited. Ac motors have no carbon brush and commutator, so they are maintenance-free, robust and widely used. However, complex control technology is needed to achieve the performance of the NFT-801RM3-S that is equivalent to that of DC motors. Nowadays, the rapid development of semiconductor power module switching frequency is accelerated many, improve the performance of the drive motor. The microprocessor speed is also getting faster and faster, can realize the AC motor control is placed in a rotating two axis direct intersection coordinate system, appropriate control of the AC motor in the two axis current component, to achieve similar to the DC motor control and has comparable performance with the DC motor.