Answer：The Chinese national standard "Code for Energy Saving Transformation of Electric Motor System" is under the jurisdiction of TC26 (National Technical Committee for Standardization of Rotating Electric Machines), and the competent authority is Chi
Answer：The main reason for the electromagnetic noise generated by the motor is the harmonic component, especially those harmonics whose frequency is relatively close to the base frequency. These harmonics may cause resonance and cause excessive vibration an...
Answer：The speed formula of the asynchronous motor is n=(1-s)n 1 , that is, n=(1-s)×60f/P, where n is the speed in r/min; f is the AC power frequency in Hz; s is Slip rate; P is the number of pole pairs. From this formula, it can be seen that to change the...
Answer：The pole pitch refers to the distance occupied by each magnetic pole of the motor along the circumferential surface of the air gap, which is often expressed by the number of slots of the motor occupied by each magnetic pole.
Answer：This article introduces the main production processes of overseas motors, and conducts comparative analysis, which can be used as a reference for motor manufacturers.
Answer：Motor application effect is a problem that both motor manufacturers and users must pay attention to. Efficiency level is a matter of great concern to everyone at present. For example, mandatory national standards such as GB18613, GB30253 and GB30254 ...
Answer：Permanent magnet synchronous motors are widely used as driving power in electric vehicles. Figure 10 is a photo on the Internet . It is the wheel side motor of BYD electric bus. It is a permanent magnet synchronous motor with a maximum power of 90kW....
Answer：Knowing how to use a product properly can have a huge impact on its performance and longevity. For example, knowing how to properly maintain cast iron pans can make them last longer. For electric motors, understanding the factors that affect motor li...
Answer：When the three-phase stator windings of the motor (each phase difference is 120 degrees in electrical angle), after the three-phase symmetrical alternating current is applied, a rotating magnetic field will be generated, and the rotating magnetic fie...
Answer：From the analysis of the mechanism of variable speed transmission, when the motor wheel is larger than the diameter of the driven equipment wheel, it is a transmission for obtaining high speed; on the contrary, when the motor wheel is smaller than th...
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