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Energy saving and consumption reduction, new trends in the development of the motor industry

Time:

11 Aug,2020

Energy conservation and emission reduction is an unavoidable topic in the whole world, which directly affects the development of the world economy. However, the industrial field is the main force of energy saving and emission reduction, among which the energy saving potential of the motor is huge. It is understood that the electricity consumption of electric motors accounts for more than 60% of the country's electricity consumption, and the energy saving of electric motors has attracted the attention of all parties.

The national standard of "energy efficiency limit value and energy efficiency grade of small and medium-sized three-phase asynchronous motors" implemented in 2007 was promulgated and implemented. Any products that fail to meet the energy efficiency standards will not be able to continue production and sales.

Data show that since the Y series motor was finalized in 1982, the Y2 series motor in 1996, the Y3 series motor designed in 2003 with "cold belt heat", the 2005 high efficiency motor (IE2)-YX3 series motor, the 2010 ultra-high efficiency motor (IE3)YE3 motor (the loss value of the motor is 20% lower than that of the high efficiency motor), and the 2012 ultra-high efficiency motor (IE4)-YE4 motor.

Motor energy efficiency standards are updated quickly. Up to now, the domestic small and medium-sized motor market Y series motor accounted for more than 90% of the market share. According to the latest information, YE4 series motors will replace YE3 series motors as a new standard for energy saving starting from June 2021.

As the vice chairman unit of the small and medium-sized motor branch of China Industrial Electrical Appliances Association, Changsha Motor Factory Group Co., Ltd. has been committed to the research and development of motor energy-saving programs for 75 years. The company's technicians agree with the following ways of saving energy and reducing consumption and improving efficiency of motors:

1. reduce stator copper loss

1. Use higher quality grade copper wire;

2. Do a good job of compact end design;

3. Good control of the tank full rate;

4. Adopt excellent dipping process;

5. Appropriately increase the length of the core (reduce the current density).

2. reduce rotor aluminum consumption

1. Adopt excellent rotor die casting process;

2. Improve the rotor insulation;

3. High pressure die cast aluminum rotor;

4. High requirements of rotor dynamic balance.

3. reduce wind wear loss

1. Without reducing the cooling effect, use a smaller size fan;

2. Choose more high quality bearings and lubricants;

3. Require a higher level of stator and rotor concentricity to reduce vibration and friction.

4. reduce iron loss

1. Adopt advanced and reasonable groove design;

2. Use thinner silicon steel sheet;

5. reduce stray loss

1. Optimize electromagnetic scheme design;

2. Develop more demanding manufacturing process measures.

With the development of my country's equipment manufacturing industry in the direction of high, precision and cutting-edge, as well as the integration of industrialization and informatization, Changsha Electric Machinery Factory Group Co., Ltd. relies on its own professional advantages, brand advantages, and far-leading production technology level. It can add a lot of color to the energy-saving and emission reduction projects of the country and the world.