Difference between dc motor and induction motor

The final basic difference is speed control. Unlike AC electric motors , DC electric motor speed can be controlled within the winding by changing the voltage applied to the DC motor armature, or by . The induction motor has no brushes and is easy to control, many older DC motors are being. After all, simple motors work because the the direction of current reverses (alternates) every half cycle, renderi . It seems that AC and DC motor difference has certain relationship with AC and DC power difference.

Torque generation method difference between DC motor and AC motor: For AC induction motor , the rotating magnetic field of the stator and the rotating magnetic field of rotor interact to generate torque, and the rotor .

The magnetic field on the rotor in this case works with the help of induced current.

Thereon DC motors are self starting and require no external help whereas AC motors require effective starting equipment to start operation. EMF is “the difference in potential that exists between two dissimilar electrodes immersed in the same electrolyte or otherwise connected by ionic conductors. Advantages and disadvatages of ac dc motor slideshare.

More information about the DC motor , so visit us our web site www . Difference between dc and ac motors the engineering projects. Curiously, the stators for the 3-phase induction motor and the DC brushless motor are virtually identical. The essential difference between the two machines is with the rotor. Unlike the DC brushless rotor, the induction rotor . A squirrel cage rotor or wound rotor are used in induction motor.

Salient pole, non salient pole or permanent magnet rotor are used in synchronous motor.

Rotor current is AC in induction motor. If permanent magnets are not used then the rotor current is DC in synchronous motor. They tend to be smaller and cheaper and run smoother than an equivalent single phase motor.

They can be more efficient than some single . From All About Circuits: Brushless DC motors are similar to AC synchronous motors. Brushless DC motor (BLDC): electronically commutated by inverter, permanent magnets on rotor, windings on stator. Both have stator created rotating magnetic fields producing . Following are some brash generalizations regarding tradeoffs between the three motor . Induction motor : electronically commutated by inverter, induction rotor, windings on stator.

The AC Motor and the DC Motor are differentiated on the various factors like the source or the nature of the power used in the motor. When energy-efficiency costs come into play, more designers are opting for the electronically commutated motor rather than familiar AC and DC versions.