Hengli Motor takes you to understand the difference between motors and electric motors

There is a big difference between the word 'motor' and 'electric motor'. Today, Hengli Motor will take a look at some of the differences between the two and further distinguish the differences between them.

What is a motor? Hengli motor takes you in a rising position

Motor (English: Electric machinery， Commonly known as "motor", it refers to an electromagnetic device that converts or transmits electrical energy based on the law of electromagnetic induction.

The motor is represented by the letter M in the circuit (formerly D in the old standard), and its main function is to generate driving torque as a power source for electrical appliances or various machinery. The generator is represented by the letter G in the circuit, and its main function is to convert electrical energy into mechanical energy.

1、 Motor division and classification

1. According to the type of working power supply, it can be divided into DC motors and AC motors.

2. According to structure and working principle, it can be divided into DC motors, asynchronous motors, and synchronous motors.

3. According to the starting and operating modes, it can be divided into capacitor starting single-phase asynchronous motor, capacitor running single-phase asynchronous motor, capacitor starting single-phase asynchronous motor, and phase separated single-phase asynchronous motor.

4. Divided by purpose: drive motors and control motors.

5. According to the structure of the rotor, it can be divided into cage type induction motors (formerly known as squirrel cage asynchronous motors) and wound rotor induction motors (formerly known as wound type asynchronous motors).

6. According to operating speed, it can be divided into high-speed motors, low-speed motors, constant speed motors, and speed regulating motors. Low speed motors are divided into gear reduction motors, electromagnetic reduction motors, torque motors, and claw pole synchronous motors.

2、 What is an electric motor

An electric motor is a device that converts electrical energy into mechanical energy. It uses energized coils (i.e. stator windings) to generate a rotating magnetic field and applies it to the rotor (such as a squirrel cage closed aluminum frame) to form a magnetic electric rotational torque. Electric motors are divided into DC motors and AC motors according to the different power sources used. Most electric motors in the power system are AC motors, which can be synchronous motors or asynchronous motors (the stator magnetic field speed and rotor rotation speed of the motor do not maintain synchronous speed). The electric motor is mainly composed of a stator and a rotor, and the direction of force movement of the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic field lines (magnetic field direction). The working principle of an electric motor is that the magnetic field exerts force on the current, causing the motor to rotate.

3、 Basic structure of electric motor

The structure of a three-phase asynchronous motor consists of a stator, rotor, and other accessories.

2. The DC motor adopts an octagonal fully laminated structure with series excited windings, which is suitable for automatic control technology that requires forward and reverse rotation. According to user needs, series excited windings can also be made. Motors with a center height of 100-280mm do not have compensating windings, but motors with a center height of 250mm and 280mm can be made with compensating windings according to specific situations and needs. Motors with a center height of 315-450mm have compensating windings. The external installation dimensions and technical requirements of the motor with a center height of 500-710mm comply with IEC international standards, and the mechanical dimensional tolerances of the motor comply with ISO international standards.

Is there a difference between a motor and an electric motor?

Electric motors include electric motors and generators. It is a general term for generators and electric motors, which are conceptually distinct from each other. Electric motors are just one type of motor operation mode, but when the motor operates in electric mode, it converts electrical energy into other forms of energy; Another operating mode of the motor is the generator, which operates in a power generation mode and converts other forms of energy into electrical energy. However, some motors, such as synchronous motors, are commonly used as generators but can also be directly used as electric motors. Asynchronous motors are more commonly used for electric motors, but with the addition of simple peripheral components, they can also be used as generators.