"The working principle of the motor to GO.
Motor (Motors) is a device that converts electrical energy into mechanical energy, it USES electric coil (that is, the stator winding) to produce a rotating magnetic field and is used to turn the mouse cage closed aluminum frame type magnetoelectric power for rotary torque.Motor by using the power divided into dc motor and ac motor, electric power system in most of the motor is ac motor, can be synchronous motor or induction motor (motor stator magnetic speed and rotor speed is not synchronized speed).Motor is mainly composed of stator and rotor, the direction of motion of the wire in the magnetic field force with the direction of current and magnetic induction line () in the direction of magnetic field direction.Working principle of the motor is a function of magnetic field on the current stress.To rotate the motor."Basic introduction" motor is a kind of rotary electric machine, it will be electrical energy into mechanical energy, which mainly includes a magnetic field to produce electromagnetic winding or the distribution of the stator winding and a rotating armature or rotor.Under the effect of rotating magnetic field of stator winding, its a current in the armature squirrel-cage aluminum box by and by the magnetic field effect and make the turn.Some of these machine types can be used as a motor, also can use as a motor.It is the electrical energy into mechanical energy of a machine, usually work part of the motor rotation, called the motor rotor motor, the also have a straight line, known as the linear motor."Basic structure", the structure of the three-phase asynchronous motor, is made up of stator, rotor and other accessories.Function: 1. The stator core part of motor magnetic circuit, and placed on the stator winding.Structure: generally from 0.35 to 0.5 mm thick surface of stator core with insulating layer of silicon steel sheet, the overlying, within the core of the circle has a uniform distribution trough, which embedded in the stator winding.Type slot of stator core has the following kinds: semi-closed type slot: the efficiency and power factor of the motor is higher, but the winding wire and insulation are difficult.Commonly used in low-voltage motor.Half-open mouth slot: can put molding winding embedded, commonly used in large and medium-sized low-voltage motors.The so-called forming the windings can be treated with insulation in advance and then into the slot.Open rack slot: to put molding winding embedded, insulation method is convenient, mainly used in high voltage motor.2, stator bypass effect: is the circuit part of the motor, to the three-phase alternating current (ac), to produce a rotating magnetic field.Structure: by the three in the space between 120 ° Angle, said arrangement can be connected with the same structure of the winding, the winding of the coil respectively according to certain rule embedded in the stator slot.The main of the stator winding insulation project has the following three: (guarantee between the conductive part of the winding and iron core reliable insulation and reliable insulation between the winding itself).(1) of insulation: overall between the stator core and stator winding insulation.(2) and white insulation: each phase of the stator winding turn-to-turn insulation each wire.(3) the turn-to-turn insulation: each phase of the stator winding turn-to-turn insulation each wire.Motor terminal box wiring: motor terminal box has a wiring board, six of the three-phase winding thread in two rows, up and down and from left to right are the three most wiring pile arrangement of Numbers for 1 (U1), 2 (V1) 3 (W1), pile bottom three wiring from left to right permutation Numbers for 6 (W2), 4 (U2), 5 (V2), three phase windings into y connection or delta connection, all are sorted by the serial number when manufacturing and maintenance.3, stand: fixed ends and to support the rotor, stator core and plays a role of protection, heat dissipation and so on.Structure: stand for cast iron parts, usually large asynchronous motor frame welded with steel plates, general frame of micro motor adopts cast aluminum parts, enclosed machine stand outside with radiating rib to increase the cooling area, protected on both ends of the frame of the motor end cover open vent, make motor inside and outside air convection, can be directly to facilitate heat dissipation.(2) of the rotor (rotating) 1, three-phase asynchronous motor rotor core: role: as part of motor magnetic circuit and rotor winding is placed in the core slot.Structure: function material with the stator, by 0.5 mm thick silicon steel sheet coining, overlying and become, silicon steel cylindrical blunt with uniform distribution of holes, used for rotor winding.Usually lagging in the silicon steel sheet with the stator iron core circle to punch the rotor core.General small asynchronous motor rotor core being connected directly on the shaft, large and medium-sized asynchronous motor rotor (more than in 300-400 mm in diameter) of the rotor core, with the aid of and pressure on the axis of the rotor bracket.2, the three-phase asynchronous motor rotor winding function: cutting the stator rotating magnetic field induced electromotive force and the current, and form the electromagnetic torque and make the motor rotation.Structure: divided into squirrel cage rotor and rotor winding.: (1) the squirrel-cage rotor rotor winding more than by the insertion of conducting bar and two circular end ring.If remove the rotor core, the appearance of the whole winding like a cage, therefore calls cage windings.Small cage motor adopts cast aluminum rotor winding, for more than 100 kw motor adopts copper bar end ring and copper welded together.(2) wound rotor type: winding and rotor winding of the stator winding is similar, is also a symmetrical three-phase winding, generally pick a star, three line received a shaft head of collecting ring, again through the brush with the external circuit.Characteristics: the structure is complex, so the application of wound rotor motor than squirrel-cage motor widely, but through the collector ring and brush additional resistor in series with rotor winding circuit of components, such as asynchronous motor to improve the performance, braking performance and adjust speed, therefore in smooth speed regulation requires a certain range of equipment, such as crane, elevator, air compressor being used.(3) other annex 1, three-phase asynchronous motor end cover: supporting role.2, bearing: connecting rotational part and fixed part.3, bearing end cover: protect the bearings.4, fan: motor cooling.Second, the dc motor using the octagonal laminated structure, not only high space utilization, and when using static rectifier power supply, can withstand the current ripple and fast changes in load current, direct current motor is generally not take series winding.High center of 100-280 - mm motor without compensation winding, but the center height of 250 mm, 280 mm motor according to the specific circumstances and needs can be made with compensating winding, the center height of 315-450 - mm motor with the compensation winding.Center 500-710 - mm motor installation appearance, size and technical requirements are in conformity with IEC international standard, the motor mechanical dimension tolerance accords with ISO international standard.Working principle of dc motor: in the diagram, coil attached to commutator segment, fixed on the rotor commutator segment, together with the motor shaft rotation, between commutator segment and commutator segment and shaft are mutual insulation, they constitute the overall called commutator.Brush A/B fixed in space.Two brushes of the motor and dc voltage, as a result of the action of brush and commutator to introduce electricity armature coil, and ensure the same pole under the current in the coil side is always a direction, which in turn ensures the coil under the very edge of the electromagnetic direction remains unchanged, ensure the motor can rotate continuously, in order to realize the converting electrical energy into mechanical energy to drive production machinery, this is the working principle of dc motor, note: each side of the coil of alternating current direction.
