Pump Motor
(5)
Boat Motor
(1)
Fan Motor
(20)
Brake Motor
(3)
Power Tools
(8)
Brushless DC Motor
(11)
DC motor with a fast response, large starting torque, from zero speed to rated speed with rated torque can provide the performance, but the advantages of the AC Motor is also its disadvantage, because the DC Confidential produce constant rated load transfer moment of performance, the armature and the rotor magnetic field to be constant to maintain 90 °, which would by brush and commutator. Carbon brush and commutator will in turn spark motor, toner, so in addition to damage caused by component, the use of limited occasions.
AC Motor without carbon brushes and commutator, maintenance-free, robust, and wide application, but the characteristics of the DC motor to achieve the equivalent performance can be achieved with complex control technology. Today the rapid development of power semiconductor switching frequency components to speed up a lot, upgrading the drive motor performance. Microprocessor speed is also faster and faster, enabling the AC motor control placed in a rotating two-axis orthogonal coordinate system, the proper control of AC Motor in the two-axis current component, similar to brushless DC motor control and a DC motor with a considerable performance.
