Principles and Components of Electric Machines and Motors

An electric machine is generally any set of mechanisms to generate, use or transform electricity. magnetic field: = k a mass creates a gravitational field of a magnet or electrical current disturb the space giving rise to a magnetic field. magnetic flux : is a scalar quantity relatives of the number of lines of induction which pass through an imaginary surface located inside a magnetic field. farafay law: the value of the electromotive force depends on the speed varies with k d flow through the limited area x the circuit and the number d k turns this has. Focault: are electric currents, closed on themselves, caused by massive induction in conductors when the magnetic flux passing through them. Makina electric: static (no moving parts (transformers) ) rotary (alternadors dynamos and motors compuestor by the rotor and stator in the air gap between the two)Sorting: makinas cc, makinas ca: can be excited by dc or ac synchronous and asynchronous respectively. cc engine: it can act as a motor and generator (stator-generates the magnetic field. Within the poles are even number, in which windings are wound excitation) (the rotor is a cylindrical piece slotted which houses the armature winding makina consisting of copper coils) (the collector is a set of thin d the copper mines d k rotate with the rotor) (the brush holders and graphite brushes k remain fixed on them by sliding the collector of thin electrical contact takes place between the armature winding and the terminals. ac motors (asincornos) formed by (stator: fixed part consisting x crown of isolated magnetic xapas x Half Day barniz.En slots provides for a winding) (rotor: part phone, and has a slot in the interiors is the windings k rotorico.Se can distinguish between the squirrel cage rotor:where the rotor winding is made up od x bar aluminum copper united in their extrems x 2 rings of the same name ai material, the pair of pekeño arrank is absorbed and the intensity is high. And rotor winding: in the grooves of the crown stay three windings connected by a common point, the free ends are joined to the copper d k 3 rings rotate with the shaft and contact aciendo cn rings are the brushes.