Basic Introduction to Motors

Basic Introduction to Electric Motors Chinese Name: Electric Motors English Name: Motor Definition: Rotating electromagnetic machinery that operates using the principle of electromagnetic induction. Used to convert electrical energy into mechanical energy. During operation, it absorbs electrical power from the electrical system and outputs mechanical power to the mechanical system. Applied discipline: Electric Power (first level discipline); The content of distribution and electricity consumption (second level discipline) and above is approved and published by the National Science and Technology Terminology Approval Committee. The Encyclopedia of Editors is a device that converts electrical energy into mechanical energy. It uses the energized coil (i.e. stator winding) to generate a rotating magnetic field and acts on the rotor squirrel cage type closed aluminum frame to form a magnetoelectric rotational torque.

Electric motors are divided into DC motors and AC motors according to the different power sources used. Most of the motors in the power system are AC motors, which can be synchronous or asynchronous motors (the stator magnetic field speed of the motor does not maintain synchronous speed with the rotor rotation speed). An electric motor mainly consists of a stator and a rotor, and the direction of the force acting on the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic induction line (magnetic field direction). The working principle of an electric motor is the effect of a magnetic field on the force acting on the current, causing the motor to rotate. Basic Introduction: An electric motor is a rotating electric machine that converts electrical energy into mechanical energy. It mainly includes an electromagnetic winding or a distributed stator winding used to generate a magnetic field, and a rotating armature or rotor.

Under the action of the rotating magnetic field of the stator winding, there is current passing through the armature squirrel cage aluminum frame and it is rotated by the magnetic field. Some types of these machines can be used as electric motors or generators. It is a machine that converts electrical energy into mechanical energy. Usually, the working part of an electric motor rotates, and this type of motor is called a rotor motor; There are also linear motors that move in a straight line, called linear motors. Electric motors can provide a wide range of power, from milliwatts to tens of thousands of kilowatts. The use and control of electric motors are very convenient, with the ability to self start, accelerate, brake, reverse, and hold, meeting various operational requirements; The working efficiency of the electric motor is high, and there is no smoke or odor, which does not pollute the environment, and the noise is also low.

Due to its series of advantages, it is widely used in various fields such as industrial and agricultural production, transportation, national defense, commercial and household appliances, medical electrical equipment, etc. Motor model is a code used to facilitate business contacts between departments such as user, design, and manufacturing, and to simplify product names, specifications, types, and other descriptions in technical documents. The product code is composed of three sequential sections: motor type code, characteristic code, and design number. The motor type code is represented by Y - asynchronous motor; T - represents synchronous motor; The Chinese phonetic alphabet used to represent the performance, structure, or purpose of an electric motor by its characteristic code. For example, the letters EXE (increased safety type), EXB (explosion-proof type), EXP (positive pressure type), etc. for explosion-proof types.

The design serial number is represented by center height, outer diameter of the iron core, frame number, flange code, frame length, iron core length, power, speed, or number of stages, etc. For example, Y2-160 M1-8 Y: model, indicating asynchronous motor; 2: Design serial number, -2 "represents the product that has been improved on the design for the first time; 160: Center height refers to the height from the center of the shaft to the plane of the machine seat; M1: Base length specification, M is medium size, with footnote -2 'being the second specification of M-type iron core, while -2' is longer than -1 '. 8: The number of poles, -8 ', refers to an 8-pole motor. For example, Y 630-10/1180 represents an asynchronous motor; 630 represents a power of 630KW; 10 poles, outer diameter of stator core 1180MM; The letter code for the length of the base is represented by an internationally recognized symbol; S is a short base type, M is a medium base type, and L is a long base type. The letter code for the length of the iron core is represented by the numbers 1, 2, 3, and ------ in sequence.