First, choose energy-saving motor:

Ordinary motors are low-cost materials and consume a lot of power because of their backward design. Now high-efficiency motors, optimize their internal design, reduce unnecessary losses, and use some high-quality copper windings and silicon steel sheets to ensure better The motor runs for a long time.

Compared with ordinary motors, high-efficiency motors have a 20% to 30% loss and an efficiency increase of 7%. The payback period is estimated to be one to two years, and sometimes even several months.

In general, high-efficiency motors are highly efficient, so it is imperative to replace old-fashioned motors with high-efficiency motors. At present, many of the company's compressed air equipment use old-style motors. Over time, it is also a lot of expense.

Second, the appropriate choice of motor capacity to achieve energy savings:

The relevant national regulations make the following announcements for the three operating areas of three-phase asynchronous motors:

The load rate is between 70% and 100% for the economic operation area; the load rate is between 40% and 70% for the general operation area;

The load rate is below 40% for non-economic operating areas.

If the motor capacity is not properly selected, the energy cost will increase greatly. The air compressor manufacturer uses a suitable motor to increase the power factor and load rate, so as to reduce power loss and save energy.

Third, the motor power factor reactive compensation:

For reactive power compensation, the motor increases the power factor and reduces power loss. Power factor = active power: apparent power, in general, too low power factor will cause excessive current. When the supply voltage is constant, the lower the power factor, the higher the current. Therefore, the power factor should be as high as possible to achieve better energy saving.

Fourth, the magnetic slot wedge is used instead of the original slot wedge.

The role of the magnetic wedge is to reduce the no-load iron loss in the asynchronous motor. The cogging effect causes harmonic flux in the motor, so the no-load additional iron loss generated in the stator and rotor core.

The stator and the rotor tooth portion may be aligned and sometimes staggered, and the tooth surface of the tooth surface may be fluctuated, and a surface loss may be generated by inducing eddy current in the tooth surface layer.

The high frequency additional iron loss induced by the stator and rotor in the iron core is called the pulse vibration loss.

Pulse vibration loss and surface loss are called high frequency additional loss, which account for 70%~90% of motor stray loss. The other 10%~30% is called load additional loss, which is generated by leakage flux. Although the use of magnetic wedges will reduce the starting torque by 10% to 20%, the motor with magnetic wedge can reduce the iron loss by 60k compared with the motor with ordinary slot wedge, and it is suitable for motor modification of no-load or light-load starting. .

Five, winding motor liquid speed:

The traditional product liquid resistance starter has many inconveniences, which makes the air compressor manufacturer very distressed. Now the new liquid resistance speed control technology changes the size of the pole plate to adjust the resistance to achieve the purpose of stepless speed regulation. .

At the same time, it also has good starting performance, because it has long-term power supply, which brings about the problem of heating and heating, and uses a unique structure and a reasonable heat exchange system, and its operating temperature is adjusted to a suitable state.

The winding motor adopts liquid resistance speed regulation technology, which integrates the advantages of reliability, convenient installation, energy saving, easy maintenance and low investment. It has good general versatility in the industry, and some speed regulation requirements are not high, and the scope is not wide. A wound motor with infrequently adjustable speed has a good effect.