Working principle and application of motor

Motor is a kind of mechanical equipment that can convert electric energy into kinetic energy. It is used in many fields. What is the working principle of motor? What are the uses of the motor? Today, I will introduce these problems to you in detail. Working principle of motor The working principle of the motor […]

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Case analysis of speed regulation of three-phase asynchronous motor

The speed regulation of three-phase asynchronous motor refers to the artificial change of motor speed under the same load. From what we have learned, the speed of the motor is Therefore, there are three ways to change the speed of the motor: variable frequency speed regulation, variable pole speed regulation and variable slip speed regulation. […]

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Under what circumstances should variable frequency motors be selected

Under normal circumstances, when AC asynchronous motor is equipped with frequency converter, the motor does not need to be replaced, which is mainly to reduce investment. However, in the following occasions, frequency conversion motor must be selected. (1) When the working frequency is greater than 50Hz, special variable frequency motor must be selected. (2) When […]

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Types and characteristics of variable frequency motor

Variable frequency motor, that is, the special motor for frequency converter, mainly has the following types. 1) Low noise motor, low noise and low vibration in the operating frequency area. 2) Constant torque motor improves the allowable torque in the low frequency region. 3) High speed motor, used in high-speed / high-frequency occasions. 4) Motor […]

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Working principle of single phase motor

The single-phase motor has only one winding resistance, and the rotor is squirrel cage type. When the single-phase sinusoidal current is connected to the stator winding resistance, the motor will produce an alternating magnetic field. The strength direction of the magnetic field changes sinusoidally with time, but it is fixed in space. Therefore, it is […]

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Basic selection principle of driving motor in electrical control

The selection of motor mainly includes motor type, structure type, capacity, rated voltage and rated speed. The basic principles of motor selection are: (1) Select the type of motor according to the speed regulation requirements of production machinery. (2) The motor capacity shall be fully utilized during operation. (3) Select the structure type of motor […]

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