What are the applications of electric motors?

Release time

2022-08-11 11:29

A motor is a rotating electrical machine that converts electrical energy into mechanical energy, mainly including electromagnet windings or distributed stator windings that generate a magnetic field, and a rotating armature or rotor. Under the action of the rotating magnetic field of the stator winding, the effective edge of the stator winding has current flow and rotates under the action of the magnetic field. According to the principle of motor reversibility, if the motor has no structural changes, the motor can be used as a motor and can be used as a generator. A machine that converts electricity into mechanical energy. The working part of the motor typically performs a rotational movement called a rotor motor. There is also a type of linear motion called a linear motor. Motors can provide a wide range of power, from milliwatts to kilowatts. Need machine tool, pump, motor drive. Electric locomotives, elevators, and motor traction are required. Fans, refrigerators, washing machines, and even various motor toys in family life are inseparable from motors. Motors have been used in all aspects of modern social life.

The working principle of the motor: the wire is subjected to the force in the magnetic field

What are the applications of electric motors?

Among all kinds of motors, the most widely used is AC asynchronous motor (also known as asynchronous motor). It is easy to use, stable in operation, low in price and solid in structure, but has low power factor and difficulty in speed adjustment. High-capacity low-speed power machines usually use synchronous motors

The motor not only has a high power factor, but its speed has nothing to do with the size of the load, and is only determined by the frequency of the grid. Work is relatively stable. When a wide range of speed regulation is required, DC motors are often used. However, due to the commutator, complex structure, expensive price and difficult maintenance, it is not suitable for harsh environments. Since the 1970s, with the development of power electronic technology, the speed regulation technology of AC motor has become more and more mature, and the price of equipment has been reduced, and it has been applied. The maximum output mechanical power that the motor can withstand in the specified operation system (continuous, short-time operation system, and controlled cycle operation system) is called the rated power, and the regulations on the nameplate should be paid attention to. When the motor is running, pay attention to matching the characteristics of its load with the characteristics of the motor to avoid overspeed or stop. Motors can provide a wide range of power, from milliwatts to gigawatts. The use and control of the motor is very convenient, with functions such as self-starting, acceleration, braking, flipping, and gripping, which can meet various operating requirements. The working efficiency of the motor is high, there is no smoke and odor, it does not pollute the environment, and the noise is small. Due to its series of advantages, it has a wide range of applications in industrial and agricultural production, transportation, national defense, commercial and household appliances, medical electrical equipment, etc. Generally, when the motor adjusts the speed, its output power will change with the speed.

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