Relevant knowledge of safety gauge capacitor forming machine

Time:2022-09-07


To introduce to youSafety Capacitor Forming MachineAs we all know, in addition to the three-phase AC power supply, it can also generate an alternating magnetic field with a two-phase AC power supply with a difference of 90 °. Single-phase AC power supply can not produce S pole and N pole alternating magnetic field. Although a reciprocating motion can be generated, a rotational motion cannot be generated.

The safety capacitor forming machine is equipped with two sets of coils, in which the main winding is directly connected to the AC power supply, and the auxiliary winding draws the current phase through the series capacitor. Thus, the phase of the current in the two windings is approximated to a two-phase alternating current. A motor that generates an alternating magnetic field in this way is called a safety capacitor forming machine.

The safety capacitor forming machine can run on single-phase AC power supply and is a classic general-purpose small motor. Its variety is very rich, and the various gear heads used in conjunction with it are countless.

安规电容成型机的相关知识

One-way rotation type

Safety Capacitor Forming MachineSuitable for long-term unidirectional continuous rotation, winding specifications and capacitance are fixed. The direction of rotation can be changed by changing the direction of the current in the main winding by a double-pole double-throw switch. But sudden reversals are generally considered harmful, and reversal control can only be implemented after a complete stop.

2. forward and reverse conversion

The motor can handle forward and reverse rotation and start-stop conversion to a certain extent. It is suitable for occasions where the running time is relatively short, the starting torque is large, and the rated working time is generally short, such as: the main and auxiliary windings are wound in the same way, and the number of turns of the coil is balanced. There are three lead wires, and the steering is controlled by a single-pole double-throw switch. The wiring is very simple. In order to stop the overtime operation after the safety capacitor forming machine is stopped, a simple braking mechanism using brushes and braking plates is usually installed at the rear of the motor to increase the friction load.

Third, the capacitor motor speed control

Capacitors are AC motors, which generally run at a certain speed close to the synchronous speed, and it is difficult to change the speed. Although reducing the driving voltage can reduce the speed to a certain extent, the torque will also be reduced, so the speed range is smaller. The lower the voltage, the greater the load fluctuation and the lower the value.

A tachometer generator (usually a permanent magnet alternator) can be installed on the motor to feed back the speed, and the conduction angle of the thyristor or the thyristor switch can be changed according to the deviation of the speed, so as to control the applied voltage and realize the speed control. Variable-speed capacitor motors using this method have been commercialized.

In addition, variable resistance and DC voltage can also be used to control the speed. It has nothing to do with the power frequency of the power supply. The speed is usually within range.

Safety Capacitor Forming Machinemay be realized by generating a speed command voltage using a charge/discharge time constant.

The above is some basic knowledge about the safety gauge capacitor forming machine, hoping to help you better understand this equipment.



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