Publish Time: 2023-09-01 Origin: Site
electric motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machinery. The driving force for the widespread use of electric motors comes from the advent of DC motors. In 1870, the Belgian engineer Graham invented this practical machine and mass-produced it, and then continuously improved the efficiency of the motor. Another electric motor research unit, Germany's Siemens, is also working hard. Almost at the same time as Gram's success, Siemens launched an electric locomotive that doesn't burn oil, which won applause at the Berlin Messe. The invention of the AC motor was completed by the American inventor Tesla. The earliest AC motors were designed based on the principle of electromagnetic induction. , its invention made the electric motor really enter the field of home appliances. After the advent of AC motors, synchronous motors, series-excited motors, and AC commutation motors have also been gradually invented and put into actual production, providing more convenience for people's lives. The invention and application of electric motors are of great significance to mankind. It can be said that it has brought earth-shaking changes to human life.
Here is the list
Classification of electric motors
Characteristics and applications of classified motors
What are the components of an electric motor?
The motor is divided according to the type of working power supply: it can be divided into DC motor and AC motor. DC motors can be divided into brushless DC motors and brushed DC motors according to their structure and working principles. Brushed DC motors can be divided into: permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are divided into: series-excited DC motors, shunt-excited DC motors, separately-excited DC motors and compound-excited DC motors. Permanent magnet DC motors are divided into: rare earth permanent magnet DC motors, ferrite permanent magnet DC motors and AlNiCo permanent magnet DC motors. Among them, AC motors can be divided into: synchronous motors and asynchronous motors. Synchronous motors can be divided into: permanent magnet synchronous motors, reluctance synchronous motors and hysteresis synchronous motors. Asynchronous motors can be divided into: induction motors and AC commutator motors. Induction motors can be divided into three-phase asynchronous motors, single-phase asynchronous motors and shaded-pole asynchronous motors. AC commutator motors can be divided into: single-phase series motors, AC and DC motors and repulsion motors.
DC motors are motors that rely on DC working voltage and are widely used in tape recorders, video recorders, DVD players, electric shavers, hair dryers, electronic watches, toys, etc.
The two mechanical components of an electric motor are a moving rotor and a non-moving stator. It also includes two electrical components, a set of magnets and an armature, one of which is connected to the rotor and the other to the stator, which together form a magnetic circuit
Field magnets - The magnets produce a magnetic field that passes through the armature. These can be electromagnets or permanent magnets. The excitation magnets are usually on the stator and the armature on the rotor, but in some types of motors they are reversed.
For DC Motors and AC Motors for metallurgy rolling mill, rubber and plastic, cement making, electricity power, Hangzhou New Hengli Electric Machine MFG. Co., Ltd. Hvae petroleum and chemical industry, mining, paper-making and ordnance-making .