1. Strong cooling variable frequency motor - used for motors with frequency converters in special occasions, it is different from ordinary motors in that a strong cooling fan is added, and the power of the fan comes from its own power supply and cannot be driven from the main motor. Outlet; the effect of the strong cooling fan is to ensure the cooling of the motor at low speed.

2. The frequency conversion motor can adjust the speed of the motor, and then complete the energy saving according to the load condition. Usually a motor is a device with a fixed speed and cannot be adjusted.

3. Usually the motor, that is, the power frequency motor, only needs to think about the starting process and the working conditions of one point of the power frequency, and then plan the motor; while the variable frequency motor needs to consider the starting process and the working conditions of all points within the frequency conversion range, and then plan the motor.

4. Because the PWM width modulated wave output by the inverter imitates the sinusoidal alternating current, there are many harmonics that usually need to be filtered by the reactor before entering the normal motor, otherwise the motor will usually heat up.

In order to get used to the PWM width modulated wave output by the frequency converter to imitate the sinusoidal alternating current, which is rich in many harmonics, the effect of the specially manufactured frequency conversion motor can actually be understood as a reactor plus a normal motor; the frequency conversion motor of the same power is larger than the normal motor core section. , The number of coil turns should be more, the wire diameter should be larger, the insulation should be high, and the special cooling fan motor should be used. In order to get used to the demand of weak magnetic speed regulation, the bearing capacity of the bearing and the dynamic balance of the high-speed rotor were considered.

5. Insulation grade, usually F grade or higher, to strengthen the insulation to ground and the insulation strength of the turns, in particular, consider the ability of the insulation to withstand impulse voltage. For the vibration and noise of the motor, it is necessary to fully consider the rigidity of the motor components and the whole to improve them. Natural frequency to avoid resonance with each force wave.

6. Usually the motor is not allowed to operate at low frequency for a long time, otherwise it may burn out due to severe heat generation.