Working principle of AC inverter: The inverter loop winder technology is a technology that changes the power supply frequency through an inverter, 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 is certain and the frequency is only reduced, the flux will be too large and the magnetic circuit will be saturated, which will burn up the motor in serious cases. Therefore, the frequency and voltage should be changed proportionally, that is, the frequency should be changed while the output voltage of the inverter is controlled, so that the flux of the motor can be kept certain and the weak magnetism and magnetic saturation phenomenon can be avoided. As the general-purpose inverter generally uses V/f control, that is, variable voltage frequency conversion method speed regulation, automatic winding machine to change the frequency and voltage to make the optimal motor control method. Therefore, the frequency conversion speed regulation method is selected. Frequency conversion speed regulation is a speed regulation method that changes the frequency of the motor stator power supply, thus changing its synchronous speed. Its characteristics: ① high efficiency, no additional loss in the speed regulation process; ② wide range of applications, can be used for cage asynchronous motor; ③ large speed range, hard characteristics, high precision.

Winding Machine Assembly

Need. Winding machine operation, such as found in the fault is no more than: electrical, mechanical, transmission, pneumatic these kinds of, then we need to cut off the power immediately for safety, in order to avoid further expansion of the fault. For example, in such cases need to be implemented immediately.

① a personal accident.

② the winding machine switch line fire or smoke.

③ winding machine suddenly occur large abnormal sound or violent vibration.

④The power supply phase failure monitoring lamp glows to indicate phase failure.

⑤ The dragged machinery is out of order, rolled or damaged.

(6) Overheating of windings, bearings, etc.

⑦The winding machine speed drops sharply, etc.

In a word, when the transformer winding machine has a fault, do not be anxious, you need to find out the problem and solve it in time.

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