Direct Current Motor Working

electrical machine

Direct current motor is one of the electrical machine that converts electrical energy into energy in the direction of motion. Direct current motor used a lot, small motors for electronic applications using direct current motors such as a cassette player, record player magnetic computer disk, computer cooling fan, and of course the legendary toy 'tamiya' use direct current motors.

Of course to the needs of big power, direct current motor is still used in certain applications. Motion or rotation produced by the direct current motor is obtained from the interaction of two fields generated by the armature and the field of direct current motors. In the illustration above, the terrain shape of a coil that is connected to a source of direct current. While the anchor is shown as a permanent magnet (U.S.), the anchor is not necessarily shaped permanent magnets, can also take the form of turns that will be the electro-magnet when given the source of direct current.

electrical machine

So if we type direct current motor windings anchor, then we must provide two sources of direct current, one for the anchor, one for the terrain. Another part that is no less important in direct-current motor is the comutator. Commutator is a mechanical converter that makes the current from flowing in the direction of the source of which remains despite rotating field windings. Commutator paired with slip-rings to perform tasks that I call just. In the illustration above, the image circle that is divided into two pieces and connected to the field winding is a split ring is what I mean. The part that is described in the attached box-shaped split ring is called a commutator. Of course, in actual application, the number of split rings are not just two and connected to a lot of winding terrain.

rotation can be produced if we have to remember the right-hand rule that the force, magnetic fields, and flows to form a three-dimensional axis as shown in the previous image. All agree that the magnetic field directed from the North pole (N) to the South pole (S), so that in the picture above there should be a magnetic field directed from N to S. Interaction of currents and magnetic fields using the right-hand rule resulted in the emergence of the style. In the picture above, can be tried alone, the conductor is close to the pole S will appear in the direction of force, contrary to the conductor close to the pole N will launch the force downward. As a result, the field will rotate because of the two forces opposing him. After one round of the conductor who had been close to the pole S will move closer to the pole N, and vice versa. Due to the pair split-ring commutator, the current flows with a fixed direction, although the conductor is changed, so that the force at that point will always remain in her direction. And so on so that the direct current motor will rotate in a fixed direction. Simply put, if we are behind the current source his direction directions so that the resulting rotation will be counterclockwise direction