China Education Equipment Purchasing Network News: According to the recent news from Liangbao, electric motors are essential production equipment for industrial and mining enterprises. How to make the motor reduce energy consumption, save electric energy, and maximize the benefits in production? It should be considered from the following aspects.
Reasonably choose the type of motor. Y series motor is a new series of products designed by the whole country. It is a more advanced asynchronous motor in China. Its advantages are high efficiency, energy saving and good starting performance. When purchasing a new motor, you should first consider choosing an energy-efficient brand, and then consider other performance indicators as needed to save energy.
Reasonably choose the rated capacity of the motor. The country stipulates the three operating areas of three-phase asynchronous motors as follows: 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 40% The following are non-economic operation zones. If the capacity of the motor is selected too large, although the equipment can be guaranteed to run normally, it not only increases investment, but also its efficiency and power factor are very low, resulting in waste of electricity. Therefore, considering that it can not only meet the needs of equipment operation, but also make it as efficient as possible, it is ideal to keep the load rate at 60% to 100%.
Energy-saving transformation of old motors: (1) Replace the external fan of the motor, and change the external fan of the motor to an energy-saving type. For different types of motors, there are corresponding energy-saving fan products available, mainly used for unidirectional operation. 2 The pole and 4-pole motors can improve the efficiency by 1.35% ～ 2.55% after the modification. (2) Use new insulating materials to increase the cross-sectional area of ​​the wire. For asphalt mica tape-insulated high-voltage motors, epoxy glass powder mica tape insulation can be used for energy saving purposes during stator coil overhaul.
Frequency control of the motor. Adopt other continuous speed regulation operation mode, use voltage regulator, pole-changing motor, electromagnetic coupling speed regulator, frequency conversion speed regulator, etc.
Increase the voltage of the motor. When the asynchronous motor is lightly loaded, reducing its external power supply voltage can save energy.
Improve power factor. Appropriate capacitors are connected in parallel at the output end of the asynchronous motor for reactive power compensation, which can improve the power factor, reduce reactive power loss, and effectively save energy.
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