1. Control the starting current of the motor: when the motor is directly started through the I frequency, it will generate 7 to 8 times the rated current of the motor, and this current value will greatly increase the electrical stress of the motor winding and generate heat, thereby reducing the life of the motor. The acid frequency speed regulation can be started at zero speed and zero voltage (the torque can also be increased appropriately). Once the connection between frequency and voltage is established, Delta's inverter can drive the load according to V/F or vector control. The use of frequency conversion speed regulation can abundantly reduce the starting current, improve the winding bearing capacity, the direct benefit of the household is that the maintenance cost of the motor will be further reduced, and the life of the motor will be increased accordingly;
2. The power required at the time of the start is low: the power of the motor is proportional to the product of current and voltage, so the power consumed by the motor directly started by the I frequency will be the power required by the frequency conversion engine. Under some operating conditions, the power distribution system has now reached a high limit, and the power surge caused by the direct I-frequency motor will have a serious impact on other users on the same network. If the inverter is used for motor start and stop, similar problems will not occur;
3. Voltage fluctuation of descending power line: When the power frequency of the motor is started, the current will increase sharply, and the electricity will also fluctuate greatly, and the fluctuation of the voltage drop will depend on the power of the motor and the capacity of the distribution network. The voltage drop will cause voltage-sensitive equipment in the same power supply network to fail to trip or work abnormally, such as PCs, sensors, proximity switches, and contactors. After the frequency conversion speed regulation is adopted, the voltage drop can be eliminated to a large extent because it can be gradually started at zero frequency and zero voltage;
4. Adjustable operating speed: the use of frequency conversion speed regulation can optimize the process process, and can be quickly changed according to the process process, and the speed can also be changed through remote control PLC or other controllers;
5. Controllable acceleration function: Delta's inverter speed regulation can be started at zero speed and evenly accelerated according to the user's needs, and the speed curve can also be selected (straight line acceleration, S-shaped speed or active acceleration). When the power frequency is started, the motor or the connected mechanical part shaft or gear will oscillate violently. This oscillation will further increase the wear and tear of the machinery, reducing the life of the mechanical components and the motor. In addition, the frequency engine can also be applied to similar filling lines to avoid bottle tipping or damage.
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