Winding machine manufacturers tell you to control the automatic bobbinless coil winding machine

Working Principle of AC Inverter: Inverter technology is a technology to change the frequency of AC asynchronous motor by changing the frequency through inverter. The inverter first converts from AC to DC and then from the inverter to DC to AC to control the speed of the AC motor.

A series of ring winders with automatic protection devices control the inverter by controlling the analog voltage input to the inverter, which controls the frequency of the inverter’s output power so that the speed current motor of the transmission follows the change in the frequency of the output power supply. Variety.

The speed of a three-phase asynchronous motor is determined by the point frequency, the number of poles of the motor and the slip rate. The torque of an asynchronous motor is produced by the interaction between the magnetic flux of the motor and the current flowing through the rotor. At a constant frequency, if the voltage is constant and only the frequency decreases, the flux is too high and the magnetic circuit is saturated. The motor will burn out.

Therefore, the frequency and voltage should be changed proportionally, i.e., the frequency of the inverter should be controlled while changing the frequency in order to keep the magnetic flux of the motor constant to avoid weak magnetism and magnetic saturation. Since general-purpose inverters generally use V / f control, i.e., variable voltage frequency mode speed regulation, changing frequency and voltage is the best motor control method.

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