Ultra Big DC Motor
Ultra Big DC Motor
Ultra Big DC Motor
  • Ultra Big DC Motor
  • Ultra Big DC Motor
  • Ultra Big DC Motor

Ultra Big DC Motor

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Rs. 177
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Rs. 177
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  • An ultra Big DC motor is a mechanically commutated electric motor powered from direct motor (DC). 
  • The ultra big DC is designed with a stationary stator and produces a speed of 2000RPM.
  • The motor is able to produce maimum torque since the relative angle between the stator and rotor magnetic flux is maintained near 90 degrees.
  • The Ultra big motor has a torque greater than that of round DC motor and big DC motor.

 

Related Tags
DC Motors
Motors & Mechanical

Construction of Ultra Big DC Motor


DC motors consist of one set of coils, called armature winding, inside another set of coils or a set of permanent magnets, called the stator. Applying a voltage to the coils produces a torque in the armature, resulting in motion.
Stator
1. The stator is the stationary outside part of a motor.
2. The stator of a permanent magnet dc motor is composed of two or more permanent magnet pole pieces.
3. The magnetic field can alternatively be created by an electromagnet. In this case, a DC coil (field winding) is wound around a magnetic material that forms part of the stator.rotor
4. The rotor is the inner part which rotates.
5. The rotor is composed of windings (called armature windings) which are connected to the external circuit through a mechanical commutator.
6. Both stator and rotor are made of ferromagnetic materials. The two are separated by air-gap.
Winding.A winding is made up of series or parallel connection of coils.
7. Armature winding - The winding through which the voltage is applied or induced.
8. Field winding - The winding through which a current is passed to produce flux (for the electromagnet)
9. Windings are usually made of copper.
10. Armature winding - The winding through which the voltage is applied or induced.
11. Field winding - The winding through which a current is passed to produce flux (for the electromagnet)
12. Windings are usually made of copper.


Principle of operation


Consider a coil in a magnetic field of flux density B. When the two ends of the coil are
connected across a DC voltage source, current I flows through it. A force is exerted on the coil as a result of the interaction of magnetic field and electric current. The force on the two sides of the coil is such that the coil starts to move in the direction of force.
In an actual DC motor, several such coils are wound on the rotor, all of which experience force,
resulting in rotation. The greater the current in the wire, or the greater the magnetic field, the faster the wire moves because of the greater force created.
At the same time this torque is being produced, the conductors are moving in a magnetic field. At different positions, the flux linked with it changes, which causes an emf to be induced .
This voltage is in opposition to the voltage that causes current flow through the conductor and is
referred to as a counter-voltage or back emf.