There is a big difference in the word difference between motor and motor. Today, let’s take a look at some of the differences between the two and further distinguish the differences between the two.
What is a motor?
Electric machinery (English: Electric machinery, commonly known as "motor") refers to an electromagnetic device that converts or transmits electrical energy according to the law of electromagnetic induction.
The motor is represented by the letter M in the circuit (the old standard is D). Its main function is to generate driving torque. As the power source for electrical appliances or various machinery, the generator is represented by the letter G in the circuit. Its main function is The role is to convert electrical energy into mechanical energy.
Motor division and classification
1. Divided according to the type of 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 operation mode, it can be divided into: capacitor-starting single-phase asynchronous motor, capacitor-operating single-phase asynchronous motor, capacitor-starting operating single-phase asynchronous motor and split-phase single-phase asynchronous motor.
4. According to the purpose, it can be divided into: drive motor and control motor.
5. According to the structure of the rotor, it can be divided into: cage induction motor (called the squirrel cage asynchronous motor in the old standard) and wound rotor induction motor (called the wound induction motor in the old standard).
6. According to the operating speed, it can be divided into: high-speed motor, low-speed motor, constant-speed motor, speed-regulating motor. Low-speed motors are divided into gear reduction motors, electromagnetic reduction motors, torque motors and claw-pole synchronous motors.
What is an electric motor?
A motor is a device that converts electrical energy into mechanical energy. It uses energized coils (that is, stator windings) to generate a rotating magnetic field and act on the rotor (such as a squirrel cage closed aluminum frame) to form a magneto-electric power rotating torque. Motors are divided into DC motors and AC motors according to different power sources. Most of the motors in the power system are AC motors, which can be synchronous motors or asynchronous motors (the motor stator magnetic field speed and the rotor rotation speed do not maintain synchronous speed). The motor is mainly composed of a stator and a rotor. The direction of the force movement of the energized wire in the magnetic field is related to the direction of the current and the direction of the magnetic line of induction (magnetic field direction). The working principle of the motor is the action of the magnetic field on the force of the current to make the motor rotate.
Basic structure of motor
1. The structure of a three-phase asynchronous motor consists of a stator, a rotor and other accessories.
2. The DC motor adopts an octagonal fully laminated structure and series winding, which is suitable for automatic control technology that requires forward and reverse rotation. According to user needs, it can also be made into series winding. Motors with a center height of 100-280mm have no compensation windings, but motors with a center height of 250mm and 280mm can be made with compensation windings according to specific conditions and needs, and motors with a center height of 315-450mm have compensation windings. The overall installation dimensions and technical requirements of the motor with a center height of 500～710mm are in line with IEC international standards, and the mechanical dimension tolerance of the motor is in line with ISO international standards.
Is there a difference between a motor and an electric motor?
Electric motors include electric motors and generators. It is the general term for generator and motor, and the two are conceptually different. The electric motor is only one of the motor operation modes, but the motor runs in the electric mode, which converts electric energy into other forms of energy; the other operation mode of the motor is the generator, and it runs in the power generation mode at this time. The energy is converted into electrical energy. However, some motors, such as synchronous motors, are generally used as generators, but they can also be used directly as motors. Asynchronous motors are more used in motors, but they can also be used as generators by adding simple peripheral components.