When the stator voltage of the asynchronous motor is changed, different speed can be obtained. Because the torque of the motor is proportional to the square of the voltage, the maximum torque drops a lot, and the speed regulation range is small, making the general cage motor difficult to apply.
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Variable frequency speed regulation is the most commonly used speed regulation of three-phase asynchronous motor, mainly the use of variable frequency speed regulation than the polar logarithm speed regulation and variable slip rate speed regulation have a higher speed range, and variable frequency speed regulation in the precision of speed regulation is also very high.
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The additional resistance is inserted into the rotor of the winding asynchronous motor, which increases the slip rate of the motor and makes the motor run at a lower speed. The greater the resistance in the series, the lower the speed of the motor.
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Hz is the abbreviation of Hertz, representing the number of times that the current periodically changes direction in a second, 50Hz means that the current has 50 cycles in a second, and the direction changes 100 times. Then why the AC frequency is set to 50HZ, the following and three-phase asynchronous motor manufacturers together to understand.
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Electromagnetic speed regulating motor is composed of cage motor, electromagnetic slip clutch and DC excitation power supply (controller). Dc excitation power is small, usually composed of single-phase half-wave or full-wave thyristor rectifier, changing the conduction Angle of the thyristor, can change the size of the excitation current.
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The motor that can be used by relying on single-phase AC is called a single-phase asynchronous motor, and its structure is simple. Easy to use, and a wide range of applications, relatively low noise, small interference to the radio system, often used in the power is not very large household appliances and small power machinery.
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The previous article talked about the three classification methods according to the working power supply, structure and working principle, starting and operation mode. Today, Senli Motor Xiaobao briefly describes the five classification methods according to the use, rotor structure, running speed, protection type and ventilation and cooling mode.
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In the first few articles, we understand the classification of several motors according to the working power supply, structure and working principle, starting, operation mode, use, rotor structure, running speed, protection type and ventilation and cooling mode. Today, continue to study with Senli Motor Xiaobian.
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Today, Senli Motor Xiaobian first take you to a simple understanding of the classification standard of the motor, first talk about the three types of classification according to the working power supply, structure and working principle, starting and running mode:
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The motor should be dried once it is flooded, whether it is a torque motor or a three-phase asynchronous motor, the way of water maintenance is roughly the same; There are many ways to dry, such as hot fans, light bulbs, etc., of course, if you can use a dryer, the effect is naturally better.
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Long axis torque motor products, suitable for winding and winding scenarios, can be customized for different industry scenarios, to meet the requirements of use. This product produced by Senli has the characteristics of reasonable structure, high efficiency, good characteristics and long service life.
Shengzhou Senli Motor19Old motor manufacturers, with a number of their own motor production lines, from the shell, shaft, rotor, stator are independent production, all products are the use of professional product quality supervision and testing equipment full inspection factory, can provide testing reports. From the shaft machining to the whole machine assembly are completed independently. Truly realize factory direct sales.
Senli motor products are used180°High temperature resistance all copper coil material, torque motor products can be used with different rotors (ordinary rotors/Steel rotor), rotor of different motor characteristics are different, we from the shell, shaft, rotor, stator are produced by the independent, all products are the use of professional product quality supervision and testing equipment full inspection factory, can provide testing reports.
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