What Kind Of Harm Does The Excessive Capacity Of The Inverter Cause To The Electrical Equipment?

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As we all know, when using the inverter, the motor cannot be too far away from the inverter equipment, and it needs to be used at a certain distance to operate normally. If the capacity of the inverter is too large, then it is easy to cause distortion of the voltage in the local power supply system. Change.

(1) The harmonic current generated will directly cause the additional heating of the motor, so that the stator of the motor will exceed the rated temperature rise of the motor itself, so that the rated output capacity of the motor will be greatly reduced.

(2) The current waveform output by the inverter is not a complete sine wave, which will increase the peak voltage of the motor, so that it directly affects the insulation level of the motor.

(3) Harmonics will viciously circulate, causing additional torque to the output current component, resulting in a serious decrease in the output torque of the motor.

(4) The frequency component of the inverter carrier caused by harmonic interference increases, which directly causes the vibration of the motor and produces electromagnetic noise. Combining the above reasons, combined with the factors of safe electricity use, it is recommended not to use the inverter and the motor, long-distance connection control, its cost is higher than the cost of overhead lines or buried power cables.