Working principle of AC ring winder frequency converter: Frequency conversion technology is a technology that changes the power supply frequency through a frequency converter, thus changing the speed of an AC asynchronous motor. The speed of the AC motor is controlled by first AC to DC conversion through the inverter and then DC to AC conversion through the inverter. And the control of the inverter for the series ring winder of the winding machine automatic protection device project is by controlling the analog voltage input to the inverter, which in turn controls the frequency of the output power supply of the inverter, so that the rotational speed of the AC motor follows the change of the output power supply frequency.

And the speed of the three-phase asynchronous motor is determined by the point frequency, the number of pole pairs of the motor and the turndown rate. The torque of the asynchronous motor is generated by the interaction between the flux of the motor and the current flowing in the rotor. At a fixed frequency, if the voltage of the automatic winding machine is certain and only the frequency is reduced, then the flux is too large and the magnetic circuit is saturated, which will burn the motor in serious cases. Therefore, the frequency and voltage should be changed proportionally, that is, the frequency is changed while the inverter output voltage is controlled, so that the magnetic flux of the motor is kept certain to avoid the weak magnetism and magnetic saturation phenomenon. Since the general-purpose inverter generally uses V/f control, i.e., variable voltage frequency control method, changing frequency and voltage makes the optimal motor control method. Therefore, the frequency conversion speed regulation method is chosen. Transformer winding machine frequency conversion speed regulation is a speed regulation method that changes the frequency of the motor stator power supply, thus changing its synchronous speed.

Gear Type Automatic Toroidal Coil Inductor Winding Machine

Its characteristics.

① high efficiency and no additional losses in the speed regulation process.

② wide range of applications, which can be used for cage-type asynchronous motors.

③ Large speed regulation range, hard characteristics and high precision.

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