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Compared to traditional motor in terms of what the advantages of variable frequency motor
2016-10-12

      Careful users will find that when we go to see some of the refrigerator, air conditioning or washing machine products, can see the title with "frequency" of such keywords. Of course, here is the frequency conversion motor products, then compared to our previous household electrical appliances used in the motor, the frequency motor What are the characteristics? What can give us a special experience? Let us Explore together.
     Compared to the traditional motor in terms of frequency motor What are the advantages? "Frequency" everywhere
     Compared to the traditional motor in terms of what is the advantage of variable frequency motor manufacturers on the frequency of motor promotion· More energy efficient
     All household appliances in the motor operation, have different levels of harmonic voltage and current, so that the motor in the non-sinusoidal voltage, current run. The higher harmonics cause the increase of the stator copper loss, the rotor copper loss, the iron loss and the additional loss, and the most significant is the rotor copper loss. Because the ordinary AC asynchronous motor is close to the fundamental frequency corresponding to the synchronous speed of rotation, therefore, higher harmonic voltage with a large slip difference after cutting the rotor bar, it will have a great rotor loss. In addition, the need to consider the skin effect due to the additional copper consumption. These losses will make the motor extra heat, reduce efficiency, reduce the output power, but if the use of variable frequency motor, the energy consumption can be reduced by 20% -30%.
    ·long lasting
    The motor carrier frequency is about several thousand to ten-kilohertz, which makes the motor stator winding to withstand a high voltage rate of increase, equivalent to the steepness of the motor impose a great impact voltage, the motor insulation between the turns To withstand the more severe test. The inverter motor can work under the voltage under the rectifier filter, the performance can be more stable, and longer life.
   · Low noise
     Asynchronous motor due to electromagnetic, mechanical, ventilation and other factors caused by vibration and noise become more complex. The time-varying harmonics contained in the variable-frequency power supply interfere with the inherent spatial harmonics of the electromagnetic part of the motor to form various electromagnetic exciting forces. When the electromagnetic force wave frequency and the natural frequency of the motor body consistent or close to the natural frequency, will produce resonance phenomenon, thereby increasing the noise. As the motor operating frequency range, a wide range of speed, a variety of electromagnetic force wave frequency is difficult to avoid the various components of the motor's inherent vibration frequency. But the frequency conversion motor can effectively solve these problems.

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